KR101013710B1 - Apparatus and method for processing network entry procedures of terminal in communication system - Google Patents

Abstract

The present invention relates to an apparatus and method for processing a network entry procedure of a terminal in a communication system.

According to the present invention, by using the terminal identification information to extract the static (Subscriber station Basic Capability) and / or static REG (Registration) information of the terminal stored in the database on the network to the basic terminal for the terminal The capability negotiation process and / or the registration process are omitted or simplified to efficiently process the network entry procedure of the terminal.

Description

Apparatus and method for processing network entry procedures of terminal in communication system

The present invention relates to an apparatus and method for processing a network entry procedure of a terminal in a communication system, and more particularly, to a static subscriber station basic of a terminal stored in a database using terminal identification information in a communication system. An apparatus and method for efficiently handling a network entry procedure of a terminal by omitting or simplifying a basic capability negotiation process and / or a registration process for a terminal by extracting and using capability information and / or static REG (Registration) information .

1 illustrates a network entry procedure of a terminal according to the prior art. For reference, FIG. 1 briefly illustrates a network entry procedure in terms of a terminal.

In brief, in step S110, the UE scans a downlink channel transmitted by the base station to perform synchronization and acquire downlink parameters. Then, in step S120, the terminal receives the Uplink Channel Descriptor (UCD) message transmitted by the base station to obtain uplink parameters. In this process, if the uplink channel for the base station is not appropriate, the terminal scans to find another downlink channel (ie, proceeds to step S110). In step S130, the UE transmits a RNG-REQ (Ranging Request) message to the base station and receives an RNG-RSP (Ranging Response) message in response to the initial ranging, and performs power ranging in this process. , Perform automatic adjustments on parameters such as offset frequency. When the initial ranging is completed, in step S140, the UE transmits a SBC-REQ (Subscriber station Basic Capability Request) message to the base station to inform its basic capability (Basic Capability), the base station in response to the SBC-RSP (Subscriber) A basic capability negotiation process is performed by transmitting a station basic capability response message to the terminal to inform the common capability of the terminal and the base station (that is, the basic capability that the terminal can use). In step S150, the terminal and the base station perform authorization and key exchange. In step S160, the terminal is registered with the base station. The registration process of the terminal is performed by the terminal transmitting a REG-REQ message to the base station, and in response thereto, the base station transmits a REG-RSP (Registration Response) message to the terminal. In step S170, the terminal and the base station establish an Internet Protocol (IP) connection and transmit operational parameters. Finally, in step S180, the terminal is established by establishing provisional connections. The network entry procedure of the is completed.

On the other hand, with respect to the present invention, the terminal and the base station in the basic capability negotiation process (S140) and registration process (S160) of the above-described process through the SBC-REQ / RSP message and REG-REQ / RSP message corresponding PHY and MAC In transmitting the parameters, FIG. 2 illustrates the parameters included in the SBC-REQ message.

As can be seen in Figure 2, to transmit a single parameter in the form of TLV (Type / Length / value) through the MAC management message, such as SBC-REQ message is required more than 3 bytes radio resources, The more parameters, the larger the message size and the more radio resources are needed.

However, in the case of SBC information and REG information, most of these parameters are terminal-dependent and thus have characteristics that are almost unchanged over time, that is, static characteristics. There was a problem of wasting time and radio resources for transmission by exchanging PHY and MAC parameters between the terminal and the base station each time. In particular, in some cases, the PHY and the MAC parameters between the terminal and the base station failed, there is a problem that the terminal does not enter the network itself.

The present invention was devised to solve the above-mentioned problems, and an object of the present invention is to store static SBC information and / or static REG information of a terminal in a database on a network and store these information when the terminal enters a network. The present invention provides an apparatus and method for efficiently handling a network entry procedure of a terminal by omitting or simplifying a basic capability negotiation process and / or a registration process by withdrawing and using the same.

Another object of the present invention is to store the static SBC information and / or static REG information of the terminal in the database with the retain time (retain time) and to extract the information when the terminal enters the network to efficiently use the network entry procedure of the terminal It is to provide an apparatus and method for processing.

For the above purposes, an apparatus for processing a network entry procedure of a terminal of one embodiment of the present invention includes: a message processing unit that receives a message from a terminal and detects terminal identification information included in the message; And deriving SBC information corresponding to the terminal identification information from the SBC information database storing static subscriber station basic capability (SBC) information for each terminal for a predetermined holding time. Characterized in that it comprises a basic capability determination unit.

Preferably, the apparatus for processing the network entry procedure of the terminal, by retrieving the REG information corresponding to the terminal identification information from the REG information database for storing each of the terminal-specific static REG (Registration) information for a predetermined holding time; The apparatus further includes a terminal registration unit that registers the terminal.

On the other hand, a method for processing a network entry procedure of a terminal according to one embodiment of the present invention includes the steps of: a) receiving a message from a terminal and detecting terminal identification information included in the message; b) retrieving SBC information corresponding to the terminal identification information from an SBC information database storing static subscriber station basic capability information for each terminal for a preset maintenance time; And c) if SBC information corresponding to the terminal identification information is found, determining basic capabilities for the terminal using the retrieved SBC information.

Preferably, the method for processing the network entry procedure of the terminal, d) REG information corresponding to the terminal identification information in the REG information database for storing each of the terminal-specific static REG (Registration) information for a predetermined holding time; Searching; And e) if REG information corresponding to the terminal identification information is found, registering the terminal using the found REG information.

In addition, a method for processing a network entry procedure of a terminal according to another aspect of the present invention includes: a) receiving a message from a terminal and detecting terminal identification information included in the message; b) retrieving at least one of station-specific static subscriber station basic capability (SBC) information and static registration (REG) information corresponding to the terminal identification information from a database; And c) performing at least one of basic capability determination for the terminal and registration for the terminal by using at least one of the retrieved SBC information and REG information.

Accordingly, the present invention reduces the time required to perform the network entry procedure by reducing or simplifying the exchange of PHY and MAC parameters between the terminal and the base station during the basic capability negotiation process and / or registration process when the terminal enters the network, the radio resources of the It has the effect of preventing waste.

In addition, the present invention by storing the static SBC information and / or static REG information of the terminal in the database on the network with the maintenance time, the SBC information of the terminal withdrawal and use in the basic capability negotiation process and / or registration process And / or REG information can be efficiently managed.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings and preferred embodiments. For reference, detailed descriptions of well-known functions and configurations that may unnecessarily obscure the subject matter of the present invention will be omitted in the following description.

First, FIG. 3 is a block diagram of an apparatus for processing a network entry procedure according to an embodiment of the present invention. As shown, the apparatus 100 for processing a network entry procedure according to the present invention includes a message processing unit 110, a basic capability determination unit 120, a terminal registration unit 130, a terminal authentication unit 140 and the like. .

In addition, the apparatus 100 for processing a network entry procedure according to the present invention may further include an SBC information database, a REG information database, a timer, or the like, or an external database (as shown in FIG. 3). 200, the SBC information database 210, the REG information database 220, and the timer 230 may be linked. For reference, when the SBC information database and / or the REG information database are implemented in the form of an external database, this is a location server, a home agent (HA), and a home location register (HLR) on a network. And an access control router (ACR), a gateway, and the like.

The message processing unit 110 processes a message related to network entry of the terminal in cooperation with the basic capability determination unit 120, the terminal registration unit 130, and the terminal authentication unit 140. Specifically, the message processing unit 110 receives and decodes an RNG-REQ message, an SBC-REQ message, a REG-REQ message, a PKM-REQ message, and the like from the terminal, and corresponds to an RNG-RSP message, an SBC-RSP message, A REG-RSP message, a PKM-RSP message, etc. are generated and transmitted to the terminal.

The basic capability determination unit 120 performs a function of negotiating basic capabilities with the terminal during the network entry procedure. Specifically, the basic capability determination unit 120 searches for the SBC information database 210 and corresponds to the terminal identification information when the terminal identification information (eg, MAC address) is included in the RNG-REQ message received from the terminal. To determine whether the static SBC information is stored, and if it is stored by determining the basic capability for the terminal by storing the SBC information corresponding to the terminal identification information in the base station. However, if there is no terminal identification information in the RNG-REQ message or the SBC information of the terminal in the SBC information database, the basic capability determination unit 120 receives the SBC-REQ message from the terminal and responds to the SBC-RSP message The basic capability negotiation process is performed by transmitting the to the terminal.

The terminal registration unit 130 performs a function of registering the terminal with the base station and connecting with the network during the network entry procedure. In detail, when the terminal identification information (eg, MAC address) is included in the RNG-REQ message received from the terminal, the terminal registration unit 130 searches for the REG information database 220 to statically correspond to the terminal identification information. (static) Checks whether the REG information is stored, and if so, registers the corresponding terminal by storing the REG information corresponding to the terminal identification information in the base station. However, if there is no terminal identification information in the RNG-REQ message or there is no REG information of the corresponding terminal in the REG information database, the terminal registration unit 130 receives the REG-REQ message from the terminal and responds to the REG-RSP message. The terminal registration process is performed by transmitting to the terminal.

The terminal authenticator 140 performs functions such as authentication, authorization, and key exchange during the network entry procedure. In detail, the terminal authentication unit 140 receives a PKM-REQ message from the terminal and transmits a PKM-RSP (Privacy Key Management Response) message to the terminal to authenticate and authorize the terminal. Exchange information related to key management. For reference, the PKM-REQ message and the PKM-RSP message each include a PKM identifier, and the terminal can confirm that it is a response to itself by confirming the identity of these PKM identifiers.

Meanwhile, the SBC information database 210 stores static subscriber basic basic capability (SBC) information for each terminal, and SBC information including terminal identification information (eg, MAC address) from the basic capability determination unit 120. Upon receiving the request, the SBC information corresponding to the terminal identification information is retrieved and transmitted to the basic capability determining unit 120.

The REG information database 220 stores static REG (Registration) information for each terminal. When the REG information database 220 receives a REG information request including terminal identification information from the terminal registration unit 130, the REG information corresponding to the terminal identification information is received. Search and transmit to the terminal register 130.

Here, the static SBC information and REG information is information obtained by the base station during the basic capability negotiation process and registration process with the terminal when the terminal enters the network for the first time, and after the base station acquires the SBC information and REG information, If the terminal re-enters the network later, the information is retrieved and used.

For reference, FIGS. 4 and 5 illustrate the structures of the SBC information database and the REG information database, respectively, according to an embodiment of the present invention.

It can be seen that the terminal SBC information and the REG information of FIGS. 4 and 5 are matched with MAC addresses, which are terminal identification information, and are stored in a database. Here, although the SBC information and REG information of the terminal can be stored permanently, according to a preferred embodiment of the present invention, the SBC information and REG information of the terminal is stored together with its retain time so that the database can store the SBC information and REG. Information can be managed efficiently.

In addition, the timer 230 allows the SBC information database and / or the REG information database to manage (store) the SBC information and / or REG information of the terminal for a predetermined maintenance time.

Here, the holding time may be set by the terminal or the base station to transmit the holding time information to the database, for reference, Table 1 below shows the holding time information in the form of TLV (Type, Length, Value).

[Table 1] SLV information and REG information retention time TLV

Hereinafter, a method of processing a network entry procedure of a terminal according to the present invention will be described.

6 is a flowchart illustrating a method for processing a network entry procedure of a terminal according to the first embodiment of the present invention. For reference, the present embodiment is a case in which the SBC information and the REG information of the corresponding terminal are all stored in one database and managed by one retain time.

Referring to FIG. 6, in step S132, when the base station (which includes an apparatus for processing a network entry procedure of the terminal according to the present invention) receives an initial ranging CDMA code from the terminal, in step S134, the base station confirms this. To determine whether the power level, timing offset, etc. are sufficient (ie, within the allowable range of the base station). If not enough, in step S136, the base station transmits an RNG-RSP (Ranging Response) message notifying 'Continue' or 'Abort' to the terminal, and the terminal transmits an initial ranging CDMA code accordingly. Stop ranging. On the contrary, if sufficient, in step S138, the base station transmits an RNG-RSP message notifying 'Success' to the terminal, which uses the initial ranging CID (Connection Identifier) (eg, CID == 0x0000). Transmits a RNG-REQ (Ranging Request) message to the base station.

On the other hand, when the base station receives the RNG-REQ message including the initial ranging CID in step S610, in step S620, the base station determines whether the terminal identification information (eg, MAC address) is present in the RNG-REQ message. If the terminal identification information is included in the RNG-REQ message, in step S630, the base station searches for a database using the terminal identification information, and in step S640, SBC information and REG information matching the terminal identification information. Determine if is present.

If the SBC information and the REG information exist in the database, in step S650, the base station transmits an RNG-RSP message including basic capability negotiation related information (SBC-RSP encodings) and registration related information (REG-RSP encodings) to the terminal. It transmits and performs basic capability determination and terminal registration using the SBC information and REG information drawn from the database. In step S150a, the base station receives the PKM-REQ message from the terminal and transmits the PKM-RSP message to the terminal in response thereto, thereby performing an authorization and key exchange process with the terminal.

On the other hand, if the terminal identification information does not exist in the RNG-REQ message (see step S620) or the SBC information and REG information of the terminal does not exist in the database (see step S640), in step S660, the base station negotiates the basic capability A general RNG-RSP message not including the related information (SBC-RSP encodings) and the registration related information (REG-RSP encodings) is transmitted to the terminal.

Then, the terminal transmits the SBC-REQ message to the base station, and in step S142, the base station receives the SBC-REQ message, and in step S144, by transmitting a SBC-RSP message in response to the basic capability negotiation process, Do this. In step S150b, the base station receives the PKM-REQ message from the terminal and transmits the PKM-RSP message to the terminal in response thereto, thereby performing an authorization and key exchange process with the terminal. Thereafter, in step S162, the base station receives the REG-REQ message from the terminal, and in step S164, by transmitting a REG-RSP message corresponding to the terminal to perform the terminal registration process.

In step S170, the base station and the terminal establishes IP (Internet Protocol) connectivity, transmits operational parameters, and then establishes provisioned connections to complete the network entry procedure of the terminal.

7 is a flowchart illustrating a method for processing a network entry procedure of a terminal according to the second embodiment of the present invention. For reference, in the present embodiment, the SBC information and / or REG information of the corresponding UE are divided into two or more groups, stored in the SBC information database and / or the REG information database, and the parameters forming each group are set in the corresponding group. This is the case where it is managed by the retain time.

8 is a diagram illustrating the structure of the SBC information database according to another embodiment of the present invention.

Referring to FIG. 8, the SBC information database according to the present embodiment divides and stores parameters constituting SBC information into two or more groups, and sets and manages different retention times for each group. For example, 'Subscriber transition gap', 'OFDMA SS demodulator', 'OFDMA SS modulator', 'OFDMA SS CINR measurement capability', 'OFDMA SS uplink power control support 170' forming a second group (Group # 2). , 'OFDMA MAP capability', 'Uplink control channel support' are stored in the SBC information database for a second retaining time (Retain Time # 2), 'OFDMA SS permutation support' forming a third group (Group # 3), 'OFDMA SS MIMO uplink support', 'OFDMA MS CSIT capability', 'OFDMA SS demodulator for MIMO support', and 'OFDMA SS modulator for MIMO support' are stored in the SBC information database for the second retaining time (Retain Time # 3). .

Therefore, as can be seen in Figure 7, the method for processing the network entry procedure of the terminal according to the second embodiment of the present invention is similar to the method according to the first embodiment described above, except that the SBC information and / or REG Since the information is divided into two or more groups and managed, a process of determining and processing whether there is total SBC information and REG information (see step S740) is necessary.

Hereinafter, a method of processing a network entry procedure of a terminal according to the second embodiment of the present invention will be described with reference to FIG. 7. For reference, the same or similar process as the first embodiment will be briefly described.

First, in step S132, when the base station receives the initial ranging CDMA code from the terminal, in step S134, the base station checks this to determine whether the power level, timing offset, etc. are sufficient. And, if it is not enough, in step S136, the base station transmits a RNG-RSP (Ranging Response) message notifying 'Continue' or 'Abort' to the terminal, and if sufficient, in step S138, the base station is 'Success' Sends a RNG-RSP message to notify the terminal.

On the other hand, when the base station receives the RNG-REQ message including the initial ranging CID in step S710, in step S720, the base station determines whether terminal identification information (eg, MAC address) is present in the RNG-REQ message. If the terminal identification information is included in the RNG-REQ message, the base station searches for the SBC information database and the REG information database using the terminal identification information in step S730, and matches the terminal identification information in step S740. It is determined whether there is SBC information and REG information.

For reference, in the second embodiment of the present invention, since the parameters corresponding to the SBC information and / or REG information are divided into two or more groups and stored in the database for each holding time, all the SBC information and the REG information may not exist. Can be. In particular, it is desirable to store non-static SBC information and / or non-static REG information, such as 'Current Transmit Power', that can change frequently at every network entry, or not in the database for a short duration. Do.

Thus, if there is any part of the SBC information and / or REG information in the database, in step S750, the base station determines the basic capability negotiation related information (SBC-RSP encodings) and / or registration related information corresponding to the parameters present in the database. The RNG-RSP message including the (REG-RSP encodings) is transmitted to the terminal, and these parameters are retrieved from the database and used to perform basic capability determination and terminal registration.

Meanwhile, in step S770, the terminal receives the RNG-RSP message transmitted from the base station and checks basic capability negotiation related information (SBC-RSP encodings) and / or registration related information (REG-RSP encodings) so that the entire base station can receive full SBC information. And check whether the REG information exists.

If the full SBC information and the REG information exist in the base station, in step S150a, the terminal transmits the PKM-REQ message to the base station and the base station transmits the PKM-RSP message in response to the PKM-REQ message to the terminal, thereby authorizing. And a key exchange process.

On the other hand, if the terminal identification information does not exist in the RNG-REQ message (see step S720) or if the SBC information and REG information of the terminal does not exist in the database (see step S740), in step S760, the base station negotiates basic capability. A general RNG-RSP message not including the related information (SBC-RSP encodings) and the registration related information (REG-RSP encodings) is transmitted to the terminal.

Then, the terminal transmits the SBC-REQ message to the base station, and in step S142, the base station receives the SBC-REQ message, and in step S144, by transmitting a SBC-RSP message in response to the basic capability negotiation process, Do this. In step S150b, the base station receives the PKM-REQ message from the terminal and transmits the PKM-RSP message to the terminal in response thereto, thereby performing an authorization and key exchange process with the terminal. Thereafter, in step S162, the base station receives the REG-REQ message from the terminal, and in step S164, by transmitting a REG-RSP message corresponding to the terminal to perform the terminal registration process.

On the other hand, if the terminal determines that the full SBC information and REG information does not exist in the base station in step S770, the terminal does not exist in the base station (that is, parameters that are not in the received SBC-RSP encodings and REG-RSP encodings) For example, the SBC-REQ message (see step S142) and / or the REG-REQ message (see step S162) are transmitted to the base station to perform the basic capability negotiation process and / or the terminal registration process.

Finally, in step S170, the base station and the terminal establishes IP (Internet Protocol) connectivity, transmits operational parameters, and then establishes provisioned connections so that the network entry procedure of the terminal is performed. Is done.

Although the present invention has been described in detail with reference to preferred embodiments, it will be apparent to those skilled in the art that the present invention may be embodied in other specific various forms without changing the technical spirit or essential features of the present invention. One embodiment is to be understood in all respects as illustrative and not restrictive.

It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. .

1 is a diagram illustrating a network entry procedure of a terminal according to the prior art.

2 is a diagram illustrating a structure of an SBC-REQ message.

3 is a block diagram of an apparatus for processing a network entry procedure of a terminal according to the present invention.

4 is a diagram illustrating the structure of an SBC information database according to an embodiment of the present invention.

5 is a diagram illustrating the structure of a REG information database according to an embodiment of the present invention.

6 is a flowchart illustrating a method for processing a network entry procedure of a terminal according to the first embodiment of the present invention.

7 is a flowchart illustrating a method for processing a network entry procedure of a terminal according to the second embodiment of the present invention.

8 is a diagram showing the structure of an SBC information database according to another embodiment of the present invention.

Claims (16)

An apparatus for processing a network entry procedure of a terminal in a communication system, A message processor configured to receive a message from a terminal and detect terminal identification information included in the message; And SBC information corresponding to the terminal identification information is retrieved from an SBC information database storing static subscriber station basic capability (SBC) information for each terminal for a predetermined holding time, and the SBC information corresponding to the terminal identification information is stored. If found, the basic capability for the terminal is determined using the searched SBC information. If the SBC information corresponding to the terminal identification information is not found, a SBC-REQ (Subscriber station Basic Capability Request) message and a SBC-RSP (Subscriber station) are determined. Basic Capability Response) A device for processing a network entry procedure of the terminal comprising a basic capability determination unit for performing a basic capability negotiation with the terminal to determine the basic capability for the terminal. The method of claim 1, And the parameters forming the SBC information are divided into two or more groups and stored in the SBC information database for a maintenance time set for each group. The method of claim 1, In the REG information database for storing the station-specific static REG (Registration) information for each predetermined maintenance time, further comprising a terminal registration unit for retrieving the REG information corresponding to the terminal identification information to register the terminal; An apparatus for processing a network entry procedure of a terminal. The method of claim 3, The parameters forming the REG information are divided into two or more groups and stored in the REG information database for a maintenance time set for each group. The method of claim 3, The SBC information database and the REG information database is provided in at least one of a base station, a control station, a gateway, a location server, a home agent, and a home location register. Device for processing the network entry procedure of the terminal 6. The method according to any one of claims 1 to 5, And the terminal identification information is a media access control (MAC) address of the terminal. 6. The method according to any one of claims 1 to 5, And the message including the terminal identification information is a RNG-REQ (Ranging Request) message. A method of processing a network entry procedure of a terminal in a communication system, a) receiving a message from the terminal and detecting terminal identification information included in the message; b) retrieving SBC information corresponding to the terminal identification information from an SBC information database storing static subscriber station basic capability information for each terminal for a preset maintenance time; And c) When the SBC information corresponding to the terminal identification information is found, the basic capability for the terminal is determined by using the searched SBC information, and when the SBC information corresponding to the terminal identification information is not found, the SBC-REQ (Subscriber station) Processing a network entry procedure of the terminal, including performing a basic capability negotiation with the terminal by using a basic capability request message and a subscriber station basic capability response message (SBC-RSP); Way. The method of claim 8, The parameters forming the SBC information are divided into two or more groups and are stored in the SBC information database for a maintenance time set for each group. 10. The method of claim 9, c ') In step b), if a group of parameters forming the SBC information is found, a SBC-REQ (Subscriber station Basic Capability Request) message and an SBC-RSP (Subscriber station) message for the SBC information except for the group of the retrieved parameters. Basic Capability Response) A method for processing a network entry procedure of a terminal, characterized in that a basic capability negotiation is performed for the terminal through message transmission and reception. The method according to any one of claims 8 to 10, d) retrieving REG information corresponding to the terminal identification information from a REG information database storing static REG (Registration) information for each terminal for a predetermined holding time; And e) if the REG information corresponding to the terminal identification information is searched, performing the registration of the terminal by using the searched REG information. The method of claim 11, The parameters constituting the REG information are divided into two or more groups and stored in the REG information database for a maintenance time set for each group. The method of claim 12, e ') When a group of parameters forming the REG information is found in step d), a REG-REQ (Registration Request) message and a REG-RSP (Registration Response) message are transmitted with respect to the REG information except for the group of the retrieved parameters. A method for processing a network entry procedure of a terminal, characterized by performing registration with the terminal through reception. A method of processing a network entry procedure of a terminal in a communication system, a) receiving a message from the terminal and detecting terminal identification information included in the message; b) retrieving at least one of station-specific static subscriber station basic capability (SBC) information and static registration (REG) information corresponding to the terminal identification information from a database; And c) if at least one of the SBC information and the REG information corresponding to the terminal identification information is found, at least one of the basic capability determination and the registration of the terminal is determined using at least one of the retrieved SBC information and the REG information. If the SBC information and the REG information corresponding to the terminal identification information are not found, the terminal and the basic capability are performed by using a subscriber station basic capability request (SBC-REQ) message and a subscriber station basic capability capability (SBC-RSP) message. Performing a negotiation and performing registration with respect to the terminal by using a REG-REQ (Registration Request) message and a REG-RSP (Registration Response) message. The method of claim 14, The basic capability determination for the terminal is a method for processing a network entry procedure of the terminal, characterized in that further using the non-static (non-static) SBC information collected through the message exchange with the terminal. The method according to claim 14 or 15, The registration of the terminal is a method for processing a network entry procedure of the terminal, characterized in that further using the non-static (non-static) REG information collected through the message exchange with the terminal.

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