JP4597196B2 - Method, apparatus, and system for negotiating session between base station and terminal in high-speed packet data system - Google Patents

Description

  The present invention relates to a method, apparatus, and system for negotiation between a base station and a terminal in a mobile communication system, and more particularly, it is repeated during session setup / update / deletion between the base station and the terminal. The present invention relates to a method, an apparatus, and a system for negotiating a session between a base station and a terminal that can simplify a negotiation procedure.

  With the rapid development of communication technology, mobile communication networks provide not only conventional voice services but also high-speed data services capable of multimedia services such as e-mail, still images, and moving images. . The conventional mobile communication system that supports high-speed data services is asynchronous with code division multiple access 2000 1x (CDMA2000 1x), 1xEV-DO (Evolution Data Only), and 1xEV-DV (Evolution for Data & Voice). UMTS (Universal Mobile Telecommunication Systems). Such a mobile communication system has a channel configuration for high-speed data transmission.

Among such mobile communication systems, 1xEV-DO system, in order to improve the data communication IS-2000 system, it is proposed a high speed packet data system in ^{3GPP2 (3 rd Generation Partnership Project 2} ).

  In the 1xEV-DO system, a forward physical channel transmitted from a base station (access network: AN) to a terminal (access terminal: AT) includes a pilot channel and a forward medium access control (MAC). ) Channel, forward traffic channel, and forward control channel. The forward physical channel is transmitted to the terminal by a time division multiplexing (TDM) method. The user data packet is transmitted through a forward traffic channel among the forward physical channels. The control message and the encapsulated user data packet are transmitted through the forward control channel corresponding to the common channel. The forward MAC channel is used to transmit reverse transmission rate control information and power control information.

  Also, in the 1xEV-DO system, the reverse physical channel transmitted from the AT to the AN has reverse physical channels having different identification codes for each AT, unlike the forward physical channel. The AT-specific reverse channel includes a pilot channel, a reverse traffic channel, a reverse data rate control (DRC) channel, a reverse rate indicator (RRI) channel, and an access channel. ) Etc. User data packets are sent over the reverse traffic channel, and the access channel is used when the AT sends a message or traffic to the AN before the traffic channel is connected. The DRC channel is used to notify the AN of the highest transmission rate that the AT can receive. The RRI channel is used to notify the transmission rate of data transmitted through the reverse traffic channel.

  On the other hand, in the case of a conventional IS-2000 system, an AT is identified using a unique number (Electronic Serial Number: ESN). However, the 1xEV-DO system assigns a temporary identifier (Unicast Access Terminal Identifier: UATI) to each AT instead of the ESN, and identifies each AT using the UATI. The UATI is defined for each service area (coverage area) of the same packet control unit (Packet Control Function (PCF) entity or Radio Network Controller (RNC)), that is, for each subnet. The UATI is composed of a subnet identifier part and an AT identifier part. When the 1xEV-DO terminal moves from one subnet to another subnet, a new UATI configured with a new subnet identifier is assigned.

  Accordingly, in order to exchange data with the system, the 1xEV-DO terminal must first receive an UATI corresponding to the AT identifier. Upon receiving the UATI, the AT transmits / receives data to / from the AN via the physical layer channel, sets the transmission type and data format in the MAC layer, transmits data, and sets in the connection layer. A method of transmitting and receiving data in an idle state while maintaining a received call, and separation and rearrangement of upper layer data such as Transmission Control Protocol / Internet Protocol (TCP / IP) , And a method of performing retransmission, etc., a process of negotiating system parameters for each layer protocol for exchanging data with the AN.

  In the process of negotiating the system parameters, the AT and AN exchange predefined messages and set up dedicated channels for message exchange. Since the dedicated channel is set before the parameters required for transmission are exchanged, the AT and AN set the dedicated traffic channel using predetermined default parameters and negotiate the parameters. Carry out. Hereinafter, a set of system parameters and system variables negotiated in this way is defined as session configuration. The process of performing such session setting negotiation is called a session setting procedure. The session setting is maintained and updated during one session, that is, a period in which data communication between the AT and the AN is possible.

The session setup procedure between the AT and the AN includes an AT initiated state in which the AT requests parameters desired by the AN, and an AN initiated state in which the parameters that the AN desires to use are proposed to the AT (AN initiated state). state). The AT or AN transmits a list of parameter values used for one system parameter via a configuration request message. When a value desired by the side that received the setting request message is in the parameter value list, the receiving side transmits a configuration response message including the desired value to the transmitting side.
However, if a value desired by the receiving side that has received the setting request message is not in the parameter value list, the receiving side transmits a list of desired parameter values that can be supported by the receiving side through the setting response message. The process of transmitting to the side is performed. Then, the corresponding system parameter can be set to a parameter value supported by the AT and the AN. Through the above-described process, the AT and AN perform parameter negotiation for all protocols used. The side that requested the parameter setting transmits a configuration complete message to the receiving side, and ends the session setting process. Then, the AT and AN for which session setting has been completed releases the traffic channel set by the predetermined initial parameter and uses the newly negotiated parameter.

  The conventional session setting procedure repeats the process of releasing and resetting the traffic channel each time a new session is set. Even when a parameter value for session setting other than the currently applied session setting is added while the AT and AN are performing data communication using a specific session setting, the above traffic channel is also set. The releasing process is performed in the same way as described above. However, if the previously set session parameters are also used in the next session setup process, i.e., there is no change in the parameters used, the traffic channel is released and re-executed as described above. The repetitive action to set leads to unnecessary service delay and reduces the user's service satisfaction.

  Further, the conventional session setting procedure cannot delete the stored session setting after the AT and AN have completed the negotiation. Therefore, in order to delete a predetermined session, the AT and AN will wait for other negotiated session settings and overwrite the newly negotiated session settings with the deleted session settings. You must use the method you want. If unnecessary session settings are not deleted in a timely manner, the AT and AN must unnecessarily perform an operation for continuously managing unused session settings.

  For example, this is the case when the AT moves to another subnet to perform a handoff. In this case, the AN must receive the session settings used in the previous subnet. In the case of the conventional system, since a procedure for deleting unnecessary session settings is not provided, the AN to which the AT is handed off receives up to unnecessary session settings, and thus overhead is generated in terms of time and memory. .

  Also, the conventional session setting procedure cannot partially update the stored session parameter value after the AT and AN have completed the negotiation. Therefore, the AT and the AN must further perform the entire session setting process in order to update a specific session, resulting in unnecessary transmission / reception of messages and unnecessary waste of time.

  In view of the above background, an object of the present invention is to provide a session between an AT and an AN that can shorten a procedure that is repeated when the session between the AT and the AN is negotiated in a high-speed packet data system. It is an object to provide a method, an apparatus, and a system for negotiating.

  Another object of the present invention is to negotiate a session between the AT and the AN in a high-speed packet data system, which can eliminate the operation of releasing the traffic channel when the session between the AT and the AN is negotiated. It is to provide a method, an apparatus, and a system.

  A further object of the present invention is to transmit information indicating whether or not a specific session setting is applied from the AN to the AT when the negotiation of the session setting between the AT and the AN is completed in the high-speed packet data system. It is to provide a method, an apparatus, and a system for negotiating a session between an AT and an AN.

  Another object of the present invention is a method for negotiating a session between an AT and an AN in which a parameter value can be partially updated when the session between the AT and the AN is negotiated in a high-speed packet data system. , Apparatus and system.

  Yet another object of the present invention is to negotiate a session between the AT and the AN that can easily delete the previous session setting when the session between the AT and the AN is negotiated in a high-speed packet data system. It is to provide a method, an apparatus, and a system.

  In order to achieve the above object, according to a first aspect of the present invention, a method for performing session setting negotiation in a base station of a high-speed packet data system includes: protocol negotiation with a terminal for session setting; A soft setting completion message comprising: a step for performing a session setting, a session setting continuation bit indicating whether or not an additional session setting is required, and a session setting token field indicating a session setting characteristic identifier to be applied A step of transmitting to the terminal, and when all session settings are completed, a step of checking whether or not the session setting currently in use has been changed; and if the session setting currently in use has not been changed, the terminal Maintaining a physical channel associated with the And wherein the door.

  According to a second aspect of the present invention, a method for performing session setting negotiation at a terminal of a high-speed packet data system includes performing a protocol-based negotiation with a base station for session setting, and additional session setting. Receiving from the base station a soft setting completion message comprising a session setting continuation bit indicating whether or not is required and a session setting token field indicating a session setting characteristic identifier to be applied; and all sessions Steps for checking whether the session settings currently in use are changed when the setting is completed, and steps for maintaining a physical channel associated with the base station when the session settings currently in use are not changed. It is characterized by comprising.

  According to a third aspect of the present invention, a method for performing session setting negotiation in a base station of a high-speed packet data system includes performing a protocol-based negotiation with a terminal for session setting, and performing all session settings. A step of transmitting to the terminal a soft setting completion message constituting a session commit bit indicating whether or not a new session is applied.

  According to a fourth aspect of the present invention, a method for performing session setting negotiation at a terminal of a high-speed packet data system includes performing a protocol-based negotiation with a base station for session setting, and performing all session settings. Receiving a soft setting completion message that constitutes a session commit bit indicating whether or not a new session is applied when it is completed, from the base station.

  According to a fifth aspect of the present invention, there is provided a method for performing session setup negotiation between a base station and a terminal in a high-speed packet data system according to protocols for session setup between the base station and the terminal. Performing negotiation, and, when all session settings are completed, transmitting to the terminal a soft setting completion message constituting a session commit bit indicating whether or not a new session is applied to the base station; The base station and the terminal comprise determining whether or not to maintain a physical channel based on a session commit bit of the soft setting completion message.

  According to a sixth aspect of the present invention, a method for deleting a session setting between a base station and a terminal in a high-speed packet data system indicates a session setting deleted from the transmitting side of the base station and the terminal. Transmitting a predetermined session deletion message having a characteristic identifier to be received to the reception side, and deleting a session setting mapped to the characteristic identifier of the reception side that has received the session deletion message. Features.

  According to a seventh aspect of the present invention, a method for updating a session setting between a base station and a terminal in a high-speed packet data system includes a specific session setting modified on the transmitting side of the base station and the terminal. A step of generating / activating a setting instance of a protocol using the corresponding parameter, and a step of receiving a message for generating / activating the corresponding setting instance from the transmitting side by the receiving side of the base station and the terminal. Performing a negotiation of parameter values updated by the base station and the terminal using a message for parameter negotiation defined in a corresponding protocol, and updating the parameter values of the base station and the terminal, and Other parameters for the session setting Characterized by comprising the steps of storing the Besshi.

  According to an eighth aspect of the present invention, a method for updating a session setting between a base station and a terminal in a high-speed packet data system updates a specific setting attribute from the transmitting side of the base station and the terminal. Transmitting the request to the other side, determining whether the setting attribute is used on the receiving side that has received the update request, and transmitting a response to the update request to the transmitting side; And a step of applying the updated setting attribute to all of the base station and the terminal when the receiving side receiving the update request accepts the use of the setting attribute.

  According to a ninth aspect of the present invention, when updating a session setting between a base station and a terminal in a high-speed packet data system, the method for updating the session setting on the transmitting side that transmits an update request is updated as described above. A step of transmitting a predetermined setting characteristic update request message indicating a specific setting attribute of the session setting to the receiving side, and a response indicating whether or not the setting attribute is used from the receiving side which has received the update request And a step of applying the updated setting attribute when the receiving side accepts the use of the setting attribute.

  According to a tenth aspect of the present invention, when updating a session setting between a base station and a terminal in a high-speed packet data system, a method for updating a session setting on a receiving side that receives an update request is updated as described above. Receiving a predetermined setting characteristic update request message indicating a specific setting attribute of the session setting, and transmitting a response indicating whether or not the setting attribute is used by the transmitting side that has transmitted the setting characteristic update request message And a step of applying the updated setting attribute when the receiving side accepts the use of the setting attribute.

  According to an eleventh aspect of the present invention, a high-speed packet data system that negotiates at least one session setting between a base station and a terminal negotiates the at least one session setting with the terminal for each protocol, When the session setting is completed, it is checked whether the session setting currently in use has been changed, and a session setting continuation bit indicating whether or not an additional session setting is required and a characteristic identifier of the applied session setting A base station that transmits a soft setting completion message that configures a session setting token field that indicates to the terminal, and a terminal that negotiates a plurality of session settings with the base station for each protocol, and is currently in use If the session has not changed, Between the earth station and the terminal, wherein the physical channel that is currently set is maintained.

  According to a twelfth aspect of the present invention, a base station apparatus that negotiates session settings for communicating with at least one terminal in a high-speed packet data system includes a base station transceiver that transmits and receives radio signals to and from the at least one terminal. The base station controller negotiates at least one session setting with the at least one terminal, and when all the session settings are completed, a new session is applied. A predetermined soft setting completion message comprising a session commit bit indicating whether or not the session setting bit is transmitted to the at least one terminal, and if the current session setting is continuously used, Control means for maintaining the physical channel set to And wherein the Rukoto.

  According to the thirteenth aspect of the present invention, in order to communicate with a base station in a high-speed packet data system, a terminal device that negotiates a session setting uses a radio for frequency conversion of a radio frequency signal transmitted and received with the base station. After performing negotiation for at least one session setting with the frequency processing unit, the modulation demodulating unit that processes the baseband signal of the message transmitted and received with the base station, and the base station, when all session settings are completed, The current session setting is continued according to a result of receiving a predetermined soft setting completion message constituting the session commit bit indicating whether or not a new session setting is applied from the base station and checking the session commit bit. Pre-configured in association with the base station. Characterized by comprising a a controller for maintaining physical channels.

  According to a fourteenth aspect of the present invention, in order to communicate with at least one base station in a high-speed packet data system, a base station apparatus that negotiates session settings is a base station that transmits and receives radio signals to and from the at least one terminal. A base station controller that controls a transceiver, wherein the base station controller negotiates at least one session setting with the at least one terminal, and then the at least one session setting to be deleted is at least one If it exists in the session setting, a predetermined session deletion message including a characteristic identifier indicating the at least one session setting to be deleted is transmitted to the at least one terminal, and the indicated at least one session setting is transmitted. Control means to delete from memory The base station apparatus characterized by.

  According to a fifteenth aspect of the present invention, a terminal device that negotiates a session setting for communicating with a base station in a high-speed packet data system has a radio frequency for frequency conversion of a radio frequency signal transmitted and received with the base station. A processing unit, a modulation / demodulation unit for processing a baseband signal of a message transmitted / received to / from the base station, and an instruction for at least one session setting to be deleted after negotiating with the base station for at least one session setting And a controller that deletes at least one instructed session setting from the memory when a predetermined session deletion message constituting the characteristic identifier is received from the base station.

  According to a sixteenth aspect of the present invention, a transmission device that negotiates session settings to communicate with at least one receiver in a high-speed packet data system includes: a communication interface that transmits and receives data to and from the at least one receiver; After the negotiation for at least one session setting with the at least one receiver via the communication interface, when a parameter for a specific session setting to be updated is generated, generation / activation of a setting instance of the corresponding protocol And a control means for transmitting a predetermined setting instance activation message to the at least one receiver.

  According to a seventeenth aspect of the present invention, a receiving device that negotiates session settings to communicate with at least one transmitter in a high-speed packet data system includes: a communication interface that transmits and receives data to and from the at least one transmitter; After negotiating at least one session setting with the at least one transmitter via the communication interface, a setting instance of the corresponding protocol is generated / activated in order to update a specific parameter of the specific session setting. And a control means for negotiating an update target parameter value with the at least one transmitter when a predetermined setting instance activation message requesting to be performed is received from the at least one transmitter.

  According to an eighteenth aspect of the present invention, a transmission device that negotiates session settings to communicate with at least one receiver in a high-speed packet data system includes a communication interface that transmits and receives data to and from the at least one receiver. When a specific parameter of a specific session setting to be updated is generated after negotiating at least one session setting with the at least one receiver via the communication interface, it is related to a request to update the corresponding parameter. Whether to update the setting attribute value by transmitting a predetermined setting characteristic update request message including the setting attribute value to the at least one receiver, receiving a response message from the at least one receiver, and Control means for determining To.

  According to a nineteenth aspect of the present invention, a receiving device that negotiates session settings to communicate with at least one transmitter in a high-speed packet data system includes: a communication interface that transmits and receives data to and from the at least one transmitter; When a specific parameter of a specific session setting to be updated is generated after negotiating at least one session setting with the at least one transmitter via the communication interface, it is related to a request to update the corresponding parameter. When a predetermined setting characteristic update request message including the set attribute value is received from the at least one transmitter, a response message indicating whether to update the set attribute value is transmitted to the at least one transmitter. Control means for To.

  Embodiments of the present invention can shorten the procedure that is repeated when a session between an AT and an AN is negotiated in a high-speed packet data system, thereby significantly reducing session setup / modification time. .

  Also, the embodiment of the present invention can eliminate the operation of unnecessarily releasing the traffic channel when the session between the AT and the AN is negotiated.

  In addition, the embodiment of the present invention may transmit information indicating whether a specific session setting is applied from the AN to the AT after the session setting negotiation between the AT and the AN is completed.

  In addition, according to an embodiment of the present invention, when a session between an AT and an AN is negotiated, a part of parameters of specific session information can be partially updated, and a desired session among all sessions can be updated. Only can be selected and removed.

  Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. In the following description, for the purpose of clarifying only the gist of the present invention, a specific description regarding related known functions or configurations is omitted.

  In order to help understanding the embodiment of the present invention, a conventional session setup process performed in a high-speed packet data system such as a 1xEV-DO (1x Evolution Data Only) system will be described with reference to FIG. That is, FIG. 1 shows a process of performing session setting negotiation between a terminal (Access Terminal: AT) 10 and a base station (Access Network: AN) 20 in a conventional high-speed packet data system.

  In FIG. 1, in step S101 to step S105, a new temporary identifier (Unicast Access Terminal Identifier: UATI) is assigned from the AN 20 to the AT 10, and in step S107, the AT 10 and the AN 20 set a traffic channel using initial parameter values. . In step S109, the AN 20 transmits a configuration start message to the AT 10 via the traffic channel. The session setting procedure in the AT initiated state is started.

  In the AT start state, the AT 10 and the AN 20 exchange a setting request message and a setting response message in steps S111 and S113 to set a desired parameter value for a specific parameter. When the setting of the desired parameter value is completed, the AT 10 transmits a setting completion message to the AN 20 in step S115 to complete the session setting in the AT start state. The session setting procedure in the AN initiated state is started.

  In the AN start state, the AN 20 assigns a predetermined encryption key value to the AT 10 in step S117. In step S119 and step S121, a setting request message and a setting response message are exchanged to set a desired parameter value for a specific parameter. When the setting of the desired parameter value is completed, the AN 20 transmits a setting completion message indicating that all the session setting processes are completed to the AT 10 in step S123.

  The high-speed packet data system uses a data configuration based on a configuration attribute when negotiating parameters for session setting. The setting attribute includes a parameter identifier and a parameter value. When the parameter negotiation is performed, the AN and AT propose the parameter value using the corresponding setting attribute, and store the negotiation result in the form of the corresponding setting attribute.

  When a high-speed packet data system as shown in FIG. 1 performs session update while using a plurality of sessions, different parameter values are used for each subnet even between the same parameters based on the same protocol. Can do. Accordingly, when the AT moves to a subnet of another AN, the AT receives a new UATI mapping mapped to the subnet and performs an operation of updating the session setting through a new session setting procedure. When such session settings are negotiated, a lot of time is required because the requests and responses for parameters used for all protocols are repeated. If the subnet changes, the user experiences a service interruption for a long time.

  To solve this problem, the AT and AN negotiate with each other during initial session setup and store information on multiple session setups that differ from one subnet to another, and then the subnet is actually changed. In this case, a method for calling and using the session setting information of the corresponding subnet stored in advance is proposed so that the session setting time can be greatly shortened. As described above, a method of storing information related to a plurality of sessions in advance is called a plurality of session setting procedures.

  Similar to the session setup procedure of FIG. 1, the multiple session setup procedures described above are an AT start that sends AT requests to the AN for parameters desired by the AT and the parameters that the AN wants to use. It is divided into a state. The AT or AN transmits a list of parameter values used for one system parameter through a setting request message. The side that receives the setting request message transmits a setting response message including the desired value to the transmitting side when the value desired by the setting request message exists in the list of parameter values.

  However, if the receiving side that receives the setting request message does not have the desired value in the list of parameter values, the receiving side sends the list of desired parameter values that can be supported by the receiving side through the setting response message. The process of transmitting to the transmitting side is performed. Then, the corresponding system parameter can be set to a parameter value supported between the AT and the AN.

  When the parameter negotiation for all protocols is completed in the above AN start state, the AN sends a predetermined soft configuration complete message (Soft Configuration Complete message) to the AT to confirm that the negotiation for one session setting has been completed. Notify AT. The soft setting completion message is transmitted to the AT together with a predetermined characteristic identifier (Personality Index) for identifying the corresponding session setting. The AT and AN store the completed session setting so as to be mapped to the value of the corresponding characteristic identifier.

  After one session setting is completed, the AN desiring to start another session setting, for example, sets a predetermined session setting continuation bit to ‘1’. The session setting continuation bit is included in the soft setting completion message when the message is transmitted. When receiving the soft setting completion message in which the session setting continuation bit is set to ‘1’, the AT transitions to an AT start state, starts a new session setting, and repeats the above-described process.

  When all session settings are completed according to the above-described process, the AN sends the soft setting completion message with the session setting continuation bit set to “0” to the AT, and all session settings are completed. Indicates that At this time, among a plurality of session setting values of the soft setting completion message, a predetermined session setting token (Session configuration token) indicating a characteristic identifier used after the session setting is completed is transmitted. The AT and AN release the traffic channel set by the preset initial parameter, and apply the parameter mapped to the session setting token to each protocol.

  As described above, in the conventional high-speed packet data system, when one or more sessions are negotiated, the traffic channel set by the initial parameter must be released after the session setting is completed. Therefore, there is a problem that the session setting is delayed.

  Unlike the conventional method, the embodiment of the present invention proposes a method in which a new session setting can be added without releasing the traffic channel. According to an embodiment of the present invention, the AT and the AN negotiate the session setting without releasing the traffic channel if it is determined that the session setting in use has not been changed after all the session settings are completed. Complete.

  First, the basic conditions of AT and AN will be described according to the embodiment of the present invention.

  In the high-speed packet data system to which the embodiment of the present invention is applied, when the session setting is completed, the AT receives from the AN a soft setting completion message in which the session setting continuation bit is set to '0'. At this time, in the first condition, the session setting characteristic identifier currently used indicates the same session setting as the session setting token specified in the software setting completion message, and in the second condition, the currently used session setting identifier If other session settings are not rewritten (overwritten) in the session settings, it is determined that the session settings currently in use have not been changed, so the session settings are negotiated without releasing the physical channel, that is, the traffic channel. Can be completed. In addition to the first condition and the second condition, if the third condition does not agree to restore the previous session between the AT and the AN, whether the session setting has been changed or not. After the determination, the session setting negotiation can be completed without releasing the physical channel.

  In the high-speed packet data system to which the embodiment of the present invention is applied, the AN has the same conditions as the AT. When the session setting is completed, the AN transmits a software setting completion message in which the session setting continuation bit is set to '0' to the AT. At this time, in the first condition, the session setting characteristic identifier currently used indicates the same session setting as the session setting token specified in the software setting completion message, and in the second condition, the currently used session setting identifier If other session settings are not rewritten (overwritten) in the session setting, the session setting negotiation can be completed without releasing the traffic channel. In addition to the first condition and the second condition, if the third condition does not agree to restore the previous session between the AT and the AN, whether the session setting has been changed or not. After the determination, the session setting negotiation can be completed without releasing the traffic channel.

  With reference to FIG. 2 and FIG. 3, the operation of AN and AT to which the method according to the embodiment of the present invention based on the above basic condition is applied will be described.

  FIG. 2 is a flowchart illustrating a method for performing session setting negotiation in an AN of a high-speed packet data system according to an embodiment of the present invention.

  In step S201, the AN performs protocol-specific negotiation for one session setting. After the negotiation for one session setting is completed, the AN determines in step S203 whether additional session setting is required. If additional session negotiation is required, the AN transmits, for example, a soft setting completion message in which the session setting continuation bit is set to '1' to the AT in step S205. In step S207, the AN stores the session setting negotiated immediately before in the characteristic identifier described in the software setting completion message. Then, the AN proceeds to step S201 and performs negotiation for the next session setting.

  However, if all session settings are completed in step S203, and the AN determines that no additional session negotiation is required, the AN sets, for example, the session setting continuation bit to '0' in step S209. The set software setting completion message is transmitted to the AT. In step S211, the AN stores the session setting negotiated immediately before in the characteristic identifier described in the software setting completion message. Thereafter, in step S213, the AN determines whether or not the currently used session setting has been changed using the above-described conditions.

  In step S213, the AN considers the three conditions as described above. The session setting characteristic identifier currently used indicates the same session setting as the session setting token specified in the above software setting completion message, and the currently used session setting characteristic identifier is not updated in the previous session negotiation process. If the restoration for the previous session is not negotiated between the AT and the AN, the AN ends the session setting process after determining that the currently used session setting has not been changed.

  However, in step S213, if any one of the above three conditions is not satisfied, the AN determines that the currently used session setting has been changed, and then in step S215, the currently used session setting. Release the traffic channel set in step 1 and interrupt the connection to the AT. In step S217, the AN applies the newly changed session setting, that is, the session setting mapped to the session setting token described in the soft setting completion message.

  FIG. 3 is a flowchart illustrating a method for performing session setting negotiation at an AT of a high-speed packet data system according to an embodiment of the present invention.

  First, in step S301, the AT performs negotiation for each protocol for one session setting. The AT performs the session setting negotiation in step S301 until the software setting completion message is received in step S303. If the software setting completion message is received in step S303, the AT checks whether the session setting continuation bit of the corresponding software setting completion message is set to '0' in step S305, and checks all sessions. Determine whether the setting is complete.

  As a result of the determination, if the session setting continuation bit is set to '1', that is, if all the session settings have not been completed, the AT sets the previously negotiated session setting as a software setting completion message. Store in the described characteristic identifier. Thereafter, the AT proceeds to step S301, and performs negotiation for the next session setting. However, if the AT receives a soft setting completion message in which the session setting continuation bit is set to '0' in step S303, the AT completes the soft setting completed in the previous negotiated session setting in step S309. Stored in the characteristic identifier described in the message. Thereafter, in step S311, the AT determines whether or not the session setting currently being used has been changed.

  In step S311, the AT considers the three conditions as described above. If the session setting characteristic identifier currently in use indicates the same session setting as the session setting token indicated in the above soft setting completion message, the currently used session setting characteristic identifier is updated in the previous session negotiation process. If the restoration for the previous session is not negotiated between the AT and the AN, the AT ends the session setting process after determining that the currently used session setting has not been changed.

  However, in step S311, if any one of the above three conditions is not satisfied, the AT determines that the currently used session setting has been changed, and then in step S313, the currently used session setting. Cancel the traffic channel set in step 1 and interrupt the connection to the AN. In step S315, the AT applies the newly changed session setting, that is, the session setting mapped to the session setting token described in the soft setting completion message.

  Hereinafter, a session setting method according to another embodiment of the present invention will be described.

  In this embodiment, the AT does not determine whether or not the session setting currently in use has been changed, but the AN specifies information indicating whether or not the session setting is applied. In this method, the AN can indicate whether a particular session setting is applied after the session setting negotiation is completed. When the AN instructs the application of a specific session setting, the AT releases the physical channel and uses the session setting specified by the AN. However, if the AN does not instruct the application of a specific session setting, the AT completes the session setting negotiation without releasing the physical channel.

  For example, an AT based on 1xEV-DO will be described. When the negotiation of the session setting is completed and a soft setting completion message with the session setting continuation bit set to '0' is received, the AT transmits the commit field (Commit field) transmitted together with the session setting continuation bit. A predetermined session commit bit (Commit bit) is read to determine whether a specific session is applied. When the session commit bit is set to ‘1’, the AT applies the session setting of the characteristic identifier corresponding to the session setting token transmitted together with the soft setting completion message. In this process, the physical channel may be released. However, the AT that has received the soft setting completion message with the session commit bit set to “0” continues to maintain the session setting currently in use without releasing the physical channel.

  For example, an AN based on 1xEV-DO will be described. When the session setting negotiation is completed, a soft setting completion message in which the session setting continuation bit is set to “0” is transmitted. At this time, when the session setting mapped to the specific characteristic identifier is applied after the session setting negotiation, the session commit bit of the soft setting completion message is set to '1', and the applied characteristic identifier is set to The soft setting completion message is transmitted together with the corresponding session setting token. Thereafter, the session setting of the characteristic identifier corresponding to the transmitted session setting token is applied. In this process, the physical channel may be released. However, if it is desired to continue using the session setting currently in use even after the session setting negotiation, the AN sends the soft setting completion message with the session commit bit set to '0'. Send and keep the session settings currently in use.

  Table 1 below shows a configuration example of a field of a soft setting completion message proposed to indicate whether a specific session setting is applied to the AN.

In <Table 1>, a message identifier (Message ID) field is used to identify different messages and is set as a message identifier indicating a software setting completion message. The transaction identifier field is an identifier used to identify different soft setting completion messages. Each time a new software setting completion message is configured, a remainder obtained by dividing the value incremented by 1 by 256 (2 ⁸ ) is designated and transmitted to the processing identifier field. The characteristic identifier store (Personality Index Store) field indicates a characteristic identifier for storing the negotiated session setting.

  If the received soft setting completion message is the first soft setting completion message after the session setting negotiation is started, the AT receives the soft setting completion message from the time when the session setting negotiation starts. Until the negotiated session setting value is stored in the indicated characteristic identifier. If the received soft setting completion message is not the first soft setting completion message, the AT is negotiated from the time when the previous soft setting completion message is received until the current soft setting completion message is received. Store the session setting value in the specified characteristic identifier.

  If the transmitted soft setting completion message is the first soft setting completion message after the session setting negotiation is started, the AN transmits the soft setting completion message from the time when the session setting negotiation starts. Until negotiated, store the negotiated session setting value in the indicated characteristic identifier. If the transmitted soft setting completion message is not the first soft setting completion message, the AN sets the negotiated session setting from the time when the previous soft setting message is transmitted until the current soft setting message is transmitted. Store the value in the indicated characteristic identifier.

  In Table 1, the session setting continuation (Continue) field indicates whether or not the session setting mapped to the new characteristic identifier is continued. If the continuation field has a value of '1', the session setting mapped to the new characteristic identifier is continued. If the continuation field has a value of '0', the session setting is terminated. In Table 1, the session commit field indicates whether or not to apply (Commit) a specific session setting. The commit field is included in the message only when the continuation field has a value of '0'.

  When the commit field has a value of “1”, the AT and the AN use a session setting that is mapped to the characteristic identifier indicated by the session configuration token field of Table 1. In this case, the AT and AN release the physical channel. The session setting token field indicates a characteristic identifier to be applied, and is included in the message only when the commit field has a value of '1'. The AT and AN use a session setting that is mapped to a characteristic identifier having the same value as the upper 4 bits of the session setting token field. In the present embodiment, the session setting token field is preferably set to 16 bits. The characteristic identifier is set to 4 bits, but the number of bits of the characteristic identifier is variable.

  Next, a session setting method according to another embodiment of the present invention will be described in more detail with reference to FIGS.

  FIG. 4 is a flowchart illustrating a session setting process performed in the AN of the high-speed packet data system according to another embodiment of the present invention. In particular, FIG. 4 illustrates the operation of the AN in a session setup procedure where physical channels are not unnecessarily released.

  In step S401, the AN performs protocol negotiation for one session setting. After the negotiation for one session setting is completed, the AN determines in step S403 whether additional session setting is required. If additional session negotiation is required, the AN transmits a soft setting completion message in which the continuation bit is set to '1' in step S405. Here, the software setting completion message is transmitted to the AT every time a session is set. In step S407, the AN that has transmitted the soft setting completion message stores the session setting negotiated immediately before in the characteristic identifier described in the soft setting completion message. Thereafter, the AN proceeds to step S401 to perform negotiation for the next session setting.

  On the other hand, in step S403, the AN that has determined that all session settings have been completed and does not require additional session negotiation, determines whether or not to apply a specific session in step S409. When the specific session is newly applied, in step S411, the AN transmits a soft setting completion message in which the continuation bit is set to '0' and the commit field is set to '1' to the AT. . Thereafter, in step S413, the AN stores the session setting negotiated immediately before in the characteristic identifier described in the software setting completion message. In step S415, the AN releases the physical channel set in the currently used session setting, and in step S417, the AN is described in the newly changed session setting, that is, in the software setting completion message. After applying the session setting mapped to the session setting token, the session setting process is terminated.

  However, if it is determined in step S409 that a new session does not need to be applied, the AN sets the continuation bit to '0' and sets the commit field to '0' in step S419. The completed software setting completion message is transmitted to the AT. In step S421, the AN stores the session setting negotiated immediately before in the characteristic identifier described in the software setting completion message, and then ends the session setting process without releasing the physical channel. . According to the above-described embodiment, after the negotiation of the session setting is completed, the AN can transmit information indicating whether a specific session setting is applied to the AT, and the previous session setting is not changed. In this case, the existing physical channel can be held as it is.

  FIG. 5 is a flowchart illustrating a session setting process performed in the AT of the high-speed packet data system according to another embodiment of the present invention. In particular, FIG. 5 illustrates the operation of the AT in a session setup procedure where physical channels are not unnecessarily released.

  In step S501, the AT performs protocol-specific negotiation for one session setting. When the negotiation for one session setting is completed, the AT receives a software setting completion message in step S503. If the software setting completion message is received in step S503, the AT determines in step S505 whether the continuation bit of the corresponding software setting completion message is set to '0'. If the continuation bit is set to '1', the AT stores the session setting negotiated immediately before in the characteristic identifier described in the software setting completion message in step S507. Then, the AT proceeds to step S501 and performs a negotiation procedure for setting a new session.

  On the other hand, if a soft setting completion message with the continuation bit set to “0” is received in step S505, the AT determines that all session settings have been completed. Thereafter, in step S509, the AT stores the session setting negotiated immediately before in the characteristic identifier described in the software setting completion message. Then, in step S511, the AT checks the value of the commit bit to determine whether to use a new session setting. If the value of the commit bit is “1” in step S511, the AT releases the physical channel set in the session setting currently in use and interrupts the connection to the AN in step S513. In step S515, the AT applies the newly changed session setting, that is, the session setting mapped to the session setting token described in the soft setting completion message.

  If the value of the commit bit is '0' in step S511, the AT immediately ends the session setting process without releasing the physical channel set in the currently used session setting. According to the above-described embodiment, the AT can use the specific session setting based on the information received from the AN indicating whether the specific session setting is applied or not. If is not changed, the existing physical channel can be kept as it is.

  Next, a method for deleting a pre-stored session setting negotiated between the AT and the AN according to an embodiment of the present invention will be described.

  In the method proposed in the embodiment of the present invention, the AN does not initiate the session setup process so as to remove the pre-stored session setup, and the characteristic identifier (Personality ID or Personality of the session to be deleted). A session deletion message (Delete Session message) including an index and a process identifier (Transaction ID) is transmitted. The AT that has received the session deletion message deletes the session information mapped to the instructed characteristic identifier from the memory. The transmission / reception of the session deletion message is not performed during the session setting negotiation.

  Table 2 below shows a configuration example of a session deletion message for removing a session setting stored in advance according to the present invention.

  In <Table 2>, a message identifier (Message ID) field indicates a value of a message identifier for identifying a session deletion message. The Transaction ID field is used to identify the order of session deletion messages that are sent repeatedly or delayed depending on the network conditions. Each time the session deletion message is transmitted, the AN increases the value of the processing identifier field, for example, by one.

  In <Table 2>, a characteristic identifier count (Personality Count) field indicates the number of characteristic identifiers to be deleted in the session deletion message (for example, the number of characteristic identifiers −1). The characteristic identifier field indicates a characteristic identifier to be mapped to the session setting to be deleted. The AT that has received the session deletion message from the AN deletes at least one session setting mapped to the characteristic identifier included in the message.

  The AT that has received the session deletion message deletes the instructed session setting and transmits a response message to the AN. The AN can confirm whether or not the session setting has been deleted by the AT receiving the response message. In this way, the session setting deletion can be stably performed. In this case, when the AN confirms that the AT has deleted the session setting after receiving the response message, the AN deletes its own session setting.

  Next, a method for updating (modifying) a prestored session setting negotiated between an AT and an AN according to an embodiment of the present invention will be described.

  In the prior art, a method for performing a session negotiation process between the AT and the AN and updating a specific session setting among a plurality of stored session settings has not been defined. Therefore, all of the above session negotiation steps must be performed even when the AT and AN want to modify some parameter values included in a particular session configuration. For example, when the AT and AN store session settings 1, 2, and 3, and wish to update the value of a specific parameter A of the session setting 2, in the conventional technology, for all parameters of the session setting 2 The session negotiation process must be re-executed.

  The present invention proposes a method in which specific parameters of a specific session configuration can be updated without having to re-execute the conventional session negotiation process between AT and AN. In the method proposed by the present invention, an AN (or AT) that requests an update of a specific parameter generates a protocol that uses the parameter modified in the corresponding session setting in order to modify the stored session setting value. Or activate. Then, the target AT (or target AN) transmits a setting instance activation message to be described later, and generates or activates a protocol that uses the corresponding parameter of the corresponding session setting.

  After this, the AN (or AT) that requested the parameter update and the AT (or AN) that received the update request are known for parameter negotiation defined in the protocol to be generated or activated. Update the parameter value of the corresponding protocol using the message. For example, the known message includes an attribute update request message (Attribute Update Request message), an attribute update accept message (Attribute Update Accept message), an attribute update reject message (Attribute Update Reject message), a configuration request message (Configuration Request message), And a configuration response message. The message for parameter negotiation is defined for each protocol. After the updating process is completed, the AN (or AT) and the target AT (or target AN) that requested the updating store the updated parameters of the corresponding protocol and other parameters of the corresponding session setting in the characteristic identifier. Then, the update of the session setting is completed.

  In the high-speed packet data system to which the embodiment of the present invention is applied, the AN (or AT) is a partial parameter (or Configuration Attribute) of a specific session configuration that is stored in advance through the session configuration negotiation. ) Is generated or activated, a protocol configuration instance (InConfiguration instance) using the corresponding parameter of the corresponding session information is generated. The protocol setting instance is an independent execution unit set by the parameter value and protocol operation defined by the protocol. The generated or activated setting instance is used to negotiate the parameters used in the corresponding protocol, and defines only the minimum operation for parameter negotiation.

  When the AN starts updating some parameters (or setting attributes) of a specific session setting, the setting instance activity defined in the present invention is generated in order to generate and activate the setting instance of the protocol using the parameter. Send a message to the AT. If the configuration instance activation message is successfully transmitted, the AN negotiates with the AT to modify the parameter value using the parameter negotiation message defined in association with the configuration instance of the protocol. . After the negotiation of the parameter value is completed, the AN stores the updated parameter value and other parameters of the session setting in the characteristic identifier of the session setting.

  In this case, after receiving the configuration instance activation message from the AN, the AT generates or activates a configuration instance of a specific protocol associated with the characteristic identifier described in the configuration instant activation message. Thereafter, the AT negotiates a parameter value to be modified using a message for parameter negotiation defined by the corresponding protocol. After the negotiation of the parameter value is completed, the AT stores the updated parameter value and other parameters of the corresponding session setting in the characteristic identifier of the corresponding session setting.

  In the high-speed packet data system to which the present invention is applied, when the AT starts updating a parameter (or setting attribute) of a specific session setting, the AT stores a partial parameter ( Alternatively, in order to update the setting attribute), a setting instance of the protocol that uses the corresponding parameter of the corresponding session setting is generated or activated. The AT sends a setting instance activation message defined in the present invention to the AN in order to generate or activate a setting instance of the protocol using the corresponding parameter of the corresponding session setting in the AN. If the configuration instance activation message is successfully transmitted, the AT negotiates with the AN to modify the parameter value using the message for parameter negotiation defined in association with the configuration instance of the protocol. I do. After the negotiation of the parameter value is completed, the AT stores the updated parameter value and other parameters of the corresponding session setting in the characteristic identifier of the corresponding session setting.

  In this case, after receiving the setting instance activation message transmitted by the AT, the AN generates or activates a setting instance of a specific protocol associated with the characteristic identifier described in the setting instance activation message. To do. Then, the AN negotiates the parameter value to be modified using the message for parameter negotiation defined in the corresponding protocol. After the negotiation of the parameter value is completed, the AN stores the updated parameter value and other parameters of the session setting in the characteristic identifier of the session setting.

  Next, the session update method according to the embodiment of the present invention will be described in more detail with reference to FIGS.

  FIG. 6 is a flowchart illustrating an operation on the side of transmitting a setting instance activation message when updating the session setting in the high-speed packet data system according to the embodiment of the present invention.

  First, in step S601, when the AT (or AN) desires to update some parameters of a specific session setting stored in advance, the AT (or AN) sets the corresponding parameter of the specific session setting to be modified. Create or activate a configuration instance of the protocol that uses. In step S603, the AT (or AN) that has started the above update uses the target AN (or target AT) to generate or activate a configuration instance of a protocol that uses the corresponding parameter of a specific session configuration. A setting instance activation message defined in the invention is transmitted to the target AN (or target AT).

  If the setting instance activation message is successfully transmitted, the AT (or AN) uses the message for parameter negotiation defined in association with the setting instance of the corresponding protocol in step S605 to modify the parameter to be modified. The value is negotiated with the target AN (or target AT). When the negotiation of the parameter value is completed in step S607, the AT (or AN) stores the updated parameter value and other parameters of the corresponding session setting in the characteristic identifier of the corresponding session setting in step S609.

  FIG. 7 is a flowchart illustrating an operation on the side of receiving a setting instance activation message when the session setting is updated in the high-speed packet data system according to the embodiment of the present invention.

  When receiving the setting instance activation message from the AT (or AN) that requested the update of the specific parameter of the session setting, the target AN (or target AT) is included in the received setting instance activation message in step S701. Create or activate a configuration instance of the update target protocol for the specific session configuration associated with the specified property identifier and protocol type.

  Thereafter, in step S703, the target AN (or target AT) uses the message for parameter negotiation defined in the corresponding protocol and the AT (or AN) that requested the update of the parameter value to be modified. Negotiate After the negotiation of the parameter values is completed in step S705, the target AN (or target AT) stores the updated parameter value and other parameters of the corresponding session setting in the characteristic identifier of the corresponding session setting in step S707. .

  Next, according to another embodiment of the present invention, a method for updating (modifying) a session setting stored in advance through negotiation between an AT and an AN will be described.

  In another embodiment of the present invention, the AT (or AN) sends a request to update a specific setting attribute (hereinafter referred to as a “Personality Update Request message”) to the target AN (or target AT). ). Here, the setting attribute defines a protocol type of a specific session setting indicated by the characteristic identifier.

  When the target AN (or AT) determines whether or not to use the corresponding setting attribute value and desires to use the requested setting attribute value, a response indicating acceptance of the update request (hereinafter referred to as “setting characteristic update”). An acceptance message (referred to as “Personality Update Accept message”) is transmitted to the AT (or AN) that requested the update. However, if the requested setting attribute value is not used, a response (hereinafter, referred to as “Personality Update Reject message”) indicating rejection of the update request is used as an AT (or AN that requested the update). ). Accordingly, the AT or AN can update the setting attribute value stored in advance by repeating the above-described operation.

  Table 3 below shows an example of the field configuration of the setting characteristic update request message proposed for updating session settings in the present invention.

  In <Table 3>, the message identifier (Message ID) field indicates a message type and is set as an identifier mapped to the setting characteristic update request message. The transaction identifier field is used to identify a pair of the setting characteristic update request message and its response message. The AN or AT that receives the response message to the update request (that is, the setting characteristic update accept / reject message) identifies the processing identifier included in the response message, and the response message has the same processing identifier as the setting characteristic. It is determined as a response to the update request message.

  In Table 3, the characteristic identifier field is used to indicate a characteristic identifier for a setting attribute associated with the update request. The protocol type field is used to indicate what protocol type the configuration attribute associated with the update request belongs to. The AN or AT requesting the update describes at least one setting attribute updated with the protocol type of the characteristic identifier in the attribute record field of <Table 3>, and transmits the message.

  According to the present embodiment, when the attribute record field is configured, the AN or AT can be restricted to propose only one setting attribute value for one setting attribute. Further, the AN or AT that transmits the setting characteristic update request message may be restricted so that the session setting of the characteristic identifier currently in use cannot be updated using the setting characteristic update request message. At least two setting attributes cannot be transmitted by being included in the setting characteristic update request message.

  On the other hand, the AT (or AN) that has received the setting characteristic update request message determines whether or not to use the setting attribute value proposed by the counterpart AN (or AT), and then the setting characteristic update acceptance message or the setting characteristic. An update rejection message is sent as a response message. Table 4 and Table 5 below show field configurations of the setting characteristic update acceptance message and the setting characteristic update rejection message corresponding to the response message to the setting characteristic update request message.

  The setting characteristic update acceptance message and the setting characteristic update rejection message have the same field configuration including a message identifier field and a process identifier field. The above two messages are sent to the counterpart AN or AT to indicate acceptance or rejection of the setting attribute update request mapped to the described process identifier. Since the two messages have the same field structure but have different message identifiers, the partner AN or AT can identify the two messages.

  8 and 9, a session update method according to another embodiment of the present invention will be described in more detail.

  FIG. 8 is a flowchart illustrating an operation on the side of transmitting a setting characteristic update request message when a session setting is updated in a high-speed packet data system according to another embodiment of the present invention.

  First, the AN (or AT) desiring to update the session setting transmits a setting characteristic update request message as shown in <Table 3>. For this purpose, the AN (or AT) desiring to update the session setting stored in advance identifies the characteristic identifier of the corresponding session setting and identifies the protocol type to which the update target setting characteristic belongs in step S801. For example, a setting characteristic update request message as shown in Table 3 is generated. Thereafter, in step S803, the AN (or AT) requesting the update transmits the setting characteristic update request message to the target AT (or target AN).

  After requesting the update, the AN (or AT) waits for a response message received from the target AT (or target AN) in steps S805 and S807. At this time, if the AN (or AT) does not receive the response message, it is confirmed whether or not a predetermined waiting time has been exceeded. If the predetermined waiting time is not exceeded, the process proceeds to step S805 to continuously perform the waiting operation. However, if the response message is not received from the target AT (or target AN) during the predetermined waiting time in step S809, the AN (or AT) requesting the update in step S811 Judge whether to give up.

  If the AN (or AT) does not give up the corresponding update request in step S811, the process proceeds to step S803, and the setting characteristic update request message is retransmitted. However, when the AN (or AT) abandons the update request, the operation for updating the session setting is terminated. On the other hand, if the response message is received from the target AT (or target AN) within a predetermined waiting time in step S807, the AN (or AT) requesting the update transmits the corresponding response message in step S813. It is confirmed whether it is a setting characteristic update acceptance message for accepting the update request or a setting characteristic update rejection message for rejecting the update request.

  As a result of the confirmation, if the response message is the setting characteristic update acceptance message in step S813, the AN (or AT) requesting the update sends the setting proposed in the setting characteristic update request message in step S815. Use attribute values. However, as a result of the confirmation, if the response message is the setting characteristic update rejection message in step S813, the existing setting attribute value is continuously maintained and used in step S817.

  FIG. 9 is a flowchart illustrating an operation on the side of receiving a setting characteristic update request message when a session setting is updated in a high-speed packet data system according to another embodiment of the present invention.

  In step S901, the target AT (or target AN) that has received the setting characteristic update request message determines whether or not to use the setting attribute value proposed in the setting characteristic update request message. If the target AT (or target AN) wishes to use the proposed setting attribute value, the existing setting attribute value of the parameter is updated to the proposed setting attribute value in step S905. In step S907, a setting characteristic update acceptance message is transmitted to the AN (or AT) requesting the update. If the proposed setting attribute value is not used, the target AT (or target AN) retains the existing setting attribute value of the parameter in step S909. Thereafter, in step S911, a setting characteristic update rejection message is transmitted to the AN (or AT) requesting the update.

  According to the above-described embodiment, the AN (or AT) transmits a request for updating the setting attribute value for the specific parameter to the counterpart AT or AN. If the above request is accepted, only a specific parameter can be specified and updated without re-executing the session negotiation process for all parameters.

  Next, a configuration of a communication system to which the session setting / updating / deleting method described with reference to FIGS. 2 to 9 is applied will be described with reference to FIG.

  FIG. 10 is a block diagram showing a configuration of a high-speed packet data system to which the embodiment of the present invention is applied. For example, FIG. 10 shows the configuration of a 1xEV-DO network.

  The communication system of FIG. 10 includes a user AT 1100 and an AN 1200 that transmits and receives data to and from the AT 1100 via a wireless network. The AN 1200 includes a base station transceiver (Access Network Transceiver System: ANTS) 1230 and a base station controller (Access Network Controller: ANC) 1250 that form a radio access network (RAN) of a 1xEV-DO network. Is done. The AN 1200 is connected to a packet data serving node (PDSN) that manages a PPP session for connecting to the AT 1100 IP network. Forward data received from the IP network is transmitted to the AT 1100 via the AN 1200, and reverse data of the AT 1100 received via the AN 1200 is transmitted to the IP network.

  In FIG. 10, the AT 1100 and the AN 1200 include a predetermined session negotiation algorithm for performing session negotiation by the method proposed in FIGS. 2 to 9 and setting / updating / deleting a session. Not only the ANC 1250 of the AN 1200 but also the PCF entity that controls the packet flow can control the session negotiation. Hereinafter, in a broad sense, it is assumed that AN 1200 includes a PCF entity.

  First, the AT 1100 of FIG. 10 performs conventional conversion by up-converting the frequency of a signal to be transmitted and the antenna 1110 for transmitting and receiving a radio signal, or down-converting the frequency of a received signal. RF processing unit 1130 that performs radio frequency (RF) processing, and modulation that processes a baseband signal that encodes and modulates a transmitted signal or that demodulates and decodes a received signal A demodulation unit (modem unit) 1150. The controller 1170 of the AT 1100 not only performs a general control operation for transmitting and receiving packet data, but also negotiates a session required for communication with the AN 1200 to set / update / delete session information. Controls the operation to perform.

  The controller 1170 generates session negotiation related information in a specified message format for session negotiation with the AN 1200, or extracts session negotiation related information from the received message. Further, the controller 1170 stores / updates / deletes corresponding information constituting an internal memory or a specific memory (not shown) in accordance with an operation for setting / updating / deleting session information and a parameter related to the session information. I do.

  10, the ANTS 1230 transmits and receives radio signals to and from the AT 1100 via the antenna 1210. Further, although not shown, the ANTS 1230 includes an RF processor that transmits and receives messages or user data, a data queue that stores received messages or user data, a data amount by queue, and a channel status of the AT 1100. A controller that selects and transmits data of a specific user or queue in consideration of service characteristics, fairness, and the like. Since these components are not directly related to the gist of the present invention, detailed description is omitted.

  In the AN 1200 of FIG. 10, the controller 1251 of the ANC 1250 controls the operation of a plurality of ANTSs 1230 that perform radio communication with the AT 1100 and manages radio resources. The controller 1251 receives various messages for session negotiation transmitted to the AT 1100 from the session control / mobility management unit (SC / MM entity) 1253, and the received message is the ANTS 1230. Send to. The controller 1251 receives various messages for session negotiation from the AT 1100 via the ANTS 1230 and transmits the received messages to the SC / MM entity 1253. In addition, the controller 1251 selects the ANTS 1230 connected to the corresponding AT 1100 and transmits the data received from the PDSN. The controller 1251 transmits the data received from the AT 1100 to the PDSN.

  The SC / MM entity 1253 generates session negotiation related information in a predetermined message format for session negotiation with the AT 1100 or extracts session negotiation related information from the received message. Further, the SC / MM entity 1253 stores / updates corresponding information constituting an internal memory or a specific memory (not shown) according to an operation for setting / updating / deleting session information and a parameter related to the session information. / Delete.

  On the other hand, when session negotiation with the AT 1100 is controlled by a PCF entity that is not an ANC, the SC / MM entity 1253 may be provided in the PCF entity. For convenience of explanation, the SC / MM entity 1253 provided in the ANC or PCF entity is referred to as the SC / MM entity 1253 of the AN 1200.

  Hereinafter, the session negotiation operation between the AT 1100 and the AN 1200 in the communication system of FIG. 10 will be described with reference to the embodiment.

  2 and 3 corresponding to the first embodiment, after the session setting is completed, the controller 1170 of the AT 1100 sends a soft setting completion message in which the continuation bit is set to '0'. Receive from AN1200. Whether the session setting characteristic identifier currently used indicates the same session setting as the session setting token specified in the above software setting completion message, and other session settings have been reconfigured (overwritten) in the currently used session settings Judge whether or not. If the session setting currently in use is not changed as a result of the determination, the session setting negotiation is terminated without releasing the physical channel, that is, the traffic channel. In addition, the controller 1170 of the AT 1100 completes the session setting negotiation without releasing the traffic channel when restoration of the previous session is not agreed between the AT and the AN under additional conditions. be able to.

  Also, if the SC / MM entity 1253 of AN 1200 completes all session settings associated with AT 1100 and determines that no additional session negotiation is required, the session setting characteristic identifier currently in use is The same session setting as the session setting token indicated in the completion message is instructed, and it is determined whether or not the characteristic identifier of the session setting currently in use has been reset in the previous session negotiation process. If the session setting currently in use is not changed as a result of the determination, the SC / MM entity 1253 ends the session setting negotiation without releasing the physical channel, that is, the traffic channel. However, if the above-mentioned conditions are not satisfied, AT1100 and AN1200 change the currently used session setting, release the traffic channel set in the currently used session setting, and use the newly changed session setting. To do.

  In the embodiment of FIGS. 4 and 5 corresponding to the second embodiment, the SC / MM entity 1253 of the AN 1200 specifies information indicating whether or not the session setting is applied. Information is transmitted to the AT 1100. After completing the session setting, the controller 1170 of the AT 1100 receives, for example, a soft setting completion message from the AN 1200 in which the continuation bit is set to “0”. Thereafter, as shown in <Table 1>, the commit field (Commit field) transmitted together with the continuation bit can be checked to determine whether or not a specific session setting is applied. When the SC / MM entity 1253 of the AN 1200 instructs the application of a specific session setting, the AT 1100 releases the traffic channel and uses the session setting indicated by the AN 1200. If the application of the specific session setting is not instructed, the AT 1100 completes the session setting negotiation without releasing the traffic channel.

  When the session setting negotiation is completed, the SC / MM entity 1253 of the AN 1200 transmits a soft setting completion message in which the continuation bit is set to '0'. At this time, when the session setting mapped to a specific characteristic identifier is negotiated and applied, the SC / MM entity 1253 may set the session setting mapped to the commit bit set to '1' and the characteristic identifier to be applied. A software setting completion message including the token is transmitted to the AT 1100. Thereafter, the AN 1200 uses the session setting of the characteristic identifier mapped to the transmitted session setting token. In this process, the traffic channel is released. However, if it is desired to continue using the session setting currently in use even after the negotiation, the SC / MM entity 1253 of the AN 1200 sends a soft setting completion message with the commit bit set to '0' to the AT 1100. To keep the session settings currently in use.

  The third embodiment is for removing a session setting stored in advance in the AT 1100 and the AN 1200, and the SC / MM entity 1253 of the AN 1200 deletes the set session information. As shown in <Table 2>, a session deletion message including a characteristic identifier of the session to be deleted and a processing identifier (Transaction ID) is transmitted to the AT 1100. When the session deletion message is received, the controller 1170 of the AT 1100 deletes the session information mapped to the characteristic identifier from the memory. Here, the number of session settings to be deleted can be specified in a characteristic identifier count (Personality Count) field of <Table 2>. A plurality of session settings to be deleted may be specified in the characteristic identifier count field.

  Further, the controller 1170 of the AT 1100 that receives the session deletion message deletes the instructed session setting and transmits a response message to the AN 1200. Upon receipt of the response message, AN 1200 SC / MM entity 1253 identifies AT 1100 session configuration deletion and deletes its own session configuration.

  In the embodiment of FIGS. 6 and 7 corresponding to the fourth embodiment, the AT 1100 (or AN 1200) desiring to update a specific parameter of a specific session setting updates the update target parameter ( Alternatively, a configuration instance activation message is transmitted to the target AN 1200 (or target AT 1100) so that a configuration instance of the protocol using the configuration attribute) can be generated or activated. Thereafter, the AT 1100 (or AN 1200) that desires the update uses a predetermined message for parameter negotiation defined in association with the setting instance of the corresponding protocol, and the target AN 1200 (or Negotiate with target AT1100). After the update target parameter value negotiation is completed, the AT 1100 (or AN 1200) that desires the update stores the negotiated parameter value and other parameters of the session setting in the characteristic identifier of the session setting.

  The target AN 1200 (or target AT 1100) that has received the setting instance activation message generates or activates the setting instance of the update target protocol mapped to the characteristic identifier indicated in the setting instance activation message. After the parameter value negotiation is completed, the target AN 1200 (or target AT 1100) stores the negotiated and updated parameter value and other parameters of the corresponding session setting in the characteristic identifier of the corresponding session setting.

  The case of the embodiment of FIGS. 8 and 9 corresponding to the fifth embodiment will be described. When it is desired to update a setting attribute value for a specific parameter of a specific session setting, the AT 1100 (or AN 1200) requests a setting characteristic update request message as shown in Table 3 in order to request an update of the corresponding setting attribute. To the target AN 1200 (or target AT 1100). Here, the setting attribute defines a protocol for setting a specific session indicated by the characteristic identifier. The setting attribute value to be updated is transmitted through an attribute record field of <Table 3>.

  When the target AN 1200 (or the target AT 1100) receives the setting characteristic update request message, the target AN 1200 determines whether or not to use the corresponding setting attribute value. If the target setting attribute value is desired to be used, the update is performed. A setting characteristic update acceptance message for accepting the request is transmitted to the AT 1100 (or AN 1200) requesting the update. However, if the target AN 1200 (or target AT 1100) does not use the requested setting attribute value, a setting characteristic update rejection message that rejects the update request is transmitted to the AT 1100 (or AN 1200) that requests the update. Accordingly, the AT 1100 or the AN 1200 can update the setting attribute value stored in advance through the repetitive operation.

  In the detailed description of the present invention, specific embodiments have been described. Needless to say, various modifications can be made without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the above-described embodiments, but should be defined by the claims and their equivalents.

It is a figure which shows the process of performing the negotiation of the session setting between AT and AN in the conventional high-speed packet data system. 5 is a flowchart illustrating a method for performing session setting negotiation performed in an AN of a high-speed packet data system according to an embodiment of the present invention; 4 is a flowchart illustrating a method for performing session setting negotiation performed by an AT of a high-speed packet data system according to an exemplary embodiment of the present invention. 5 is a flowchart illustrating a method for performing session setup negotiation performed in an AN of a high-speed packet data system according to another embodiment of the present invention; 6 is a flowchart illustrating a method for performing session setting negotiation performed in an AT of a high-speed packet data system according to another exemplary embodiment of the present invention. 6 is a flowchart illustrating an operation on the side of transmitting a setting instance activation message when session setting is updated in the high-speed packet data system according to the embodiment of the present invention. 5 is a flowchart illustrating an operation on the side of receiving a setting instance activation message when updating session settings in the high-speed packet data system according to the embodiment of the present invention. 7 is a flowchart illustrating an operation on the side of transmitting a setting characteristic update request message when updating session settings in a high-speed packet data system according to another embodiment of the present invention. 6 is a flowchart illustrating an operation on the side of receiving a setting characteristic update request message when updating session settings in a high-speed packet data system according to another embodiment of the present invention. It is a block diagram which shows the structure of the high-speed packet data system to which this invention is applied.

Explanation of symbols

1100 AT
1110 Antenna 1130 RF processor 1150 Modem part 1170 Controller 1200 AN
1210 antenna 1230 ANTS
1250 ANC / PCF
1251 Controller 1253 SC / MM

Claims (35)

A method for performing session setup negotiation at a base station of a high-speed packet data system, comprising:
Performing negotiation by protocol with a terminal for session setting;
If all session settings are completed, sending to the terminal a soft setting completion message comprising a session commit bit indicating whether a new session is applied;
If the session commit bit indicates application of the new session, releasing a physical channel associated with the terminal;
Maintaining the physical channel associated with the terminal if the session commit bit indicates maintenance of a session currently in use . It said soft setting completion message, additional method of claim 1, wherein the session configuration further comprises a session configuration continue bit indicating whether the required. The method of claim 2 , wherein the session commit bit is omitted if the session setup continuation bit indicates that additional session setup is required. Wherein the session commit bit is now if the session settings in use is changed, the method according to claim 1, characterized in that it is set to indicate that the new session is applied. The session commit bit is set to indicate that the new session is applied when the characteristic identifier indicated by the session setting token of the soft setting completion message is different from the characteristic identifier of the session currently in use. The method of claim 1 wherein: Wherein the session commit bit is when the characteristics of the session configuration currently in use has been updated in a previous session negotiation process, according to claim, characterized in that it is set to indicate that the new session is applied 1 The method described. The session commit bit is set to indicate that the new session is applied when the terminal negotiates with the base station for restoration of a previous session setting. The method according to claim 1 . The soft setting completion message further comprises a session setting token field indicating a session setting characteristic identifier to be applied when the session commit bit is set to indicate that the new session is applied. The method of claim 1 wherein: 9. The method according to claim 8, wherein the session setting token field includes a characteristic identifier of the session setting to be applied in the most significant 4 bits. If the session commit bit indicates application of the new session;
The method of claim 8 , further comprising applying a session setting mapped to the session setting token. A method for performing session setting negotiation at a terminal of a high-speed packet data system,
Performing a protocol-specific negotiation with a base station for session setup;
If all session settings are completed, receiving a soft setting complete message from the base station that constitutes a session commit bit indicating whether a new session is applied;
Releasing the physical channel associated with the base station if the session commit bit indicates application of the new session;
Maintaining the physical channel associated with the base station if the session commit bit indicates maintenance of a session currently in use . The method of claim 11, wherein the soft setting completion message further comprises a session setting continuation bit indicating whether additional session setting is required. The method of claim 12 , wherein the session commit bit is omitted if the session setup continuation bit indicates that additional session setup is required. The soft setting completion message further comprises a session setting token field indicating a characteristic identifier of a session setting to be applied when the session commit bit is set to indicate that the new session is applied. The method according to claim 11 . The method according to claim 14, wherein the session setting token field includes a characteristic identifier of the session setting to be applied in the most significant 4 bits. Wherein when the session commit bit indicating the application of the new session, The method of claim 14, wherein the further comprising the steps of applying a session configuration mapped to the session setup token. A method for performing session setup negotiation between a base station and a terminal in a high-speed packet data system,
Performing protocol-specific negotiation for session setup between the base station and the terminal;
If all session settings are completed, sending a soft setting completion message to the terminal that configures a session commit bit indicating whether a new session is applied to the base station;
The base station and the terminal comprise determining whether to maintain or release a physical channel based on a session commit bit of the soft setting completion message. When deleting the session setting between the base station and the terminal ,
Transmitting a predetermined session deletion message comprising a characteristic identifier indicating a session setting to be deleted from the transmission side of the base station and the terminal to the reception side;
The method according to claim 17 , further comprising: deleting a session setting mapped to the characteristic identifier of the receiving side that has received the session deletion message. The method of claim 18 , wherein the session deletion message further comprises a field indicating the number of session settings to be deleted. Transmitting a confirmation message from the receiving side that has received the session deletion message to the transmitting side;
19. The method according to claim 18 , further comprising the step of deleting the corresponding session setting of the transmitting side that has received the confirmation message. A base station device that negotiates session settings to communicate with at least one terminal in a high-speed packet data system,
A base station controller for controlling a base station transceiver for transmitting and receiving radio signals to and from the at least one terminal;
The base station controller negotiates at least one session setting with the at least one terminal and then sets a session commit bit indicating whether a new session is applied when all session settings are completed. Sending a predetermined soft setting completion message to the at least one terminal to maintain a pre-configured physical channel associated with the at least one terminal if the current session setting is to be used continuously ; A base station apparatus comprising: a control unit that releases a physical channel associated with the terminal when the session commit bit instructs application of the new session . The base station apparatus according to claim 21, wherein the soft setting completion message further includes a session setting token field indicating a session setting characteristic identifier to be used when all the session settings are completed. The base station apparatus according to claim 21 , wherein the session commit bit is omitted when the session setting continuation bit indicates that additional session setting is required. The base station apparatus according to claim 23 , wherein the session commit bit is set to indicate that the new session is applied when a session setting currently in use is changed. The base station apparatus according to claim 23, wherein the session setting token field includes a characteristic identifier of the session setting to be applied in most significant 4 bits. If the session commit bit indicating the application of the new session, wherein, prior SL base station apparatus according to claim 25, wherein applying a session configuration mapped to the session set token. The base station apparatus according to claim 21 , wherein the control unit includes a session control and mobility management unit provided in a base station controller of a 1xEV-DO network. The base station apparatus according to claim 21 , wherein the control unit includes a session control and mobility management unit provided in a packet control unit of a 1xEV-DO network. The control means negotiates at least one session setting with the at least one terminal, and if the at least one session setting to be deleted exists in at least one session setting, the at least one to be deleted a predetermined delete session message characteristics identifier is included for instructing the session settings transmitted to the at least one terminal, characterized in that configured to remove at least one session configuration that the instructed from the memory The base station apparatus according to claim 21 . 30. The base station apparatus according to claim 29 , wherein the control means performs the deletion after receiving a response message to the session deletion message from the at least one terminal. In order to communicate with a base station in a high-speed packet data system, a terminal device that negotiates session settings,
A radio frequency processing unit for frequency conversion of radio frequency signals transmitted and received with the base station;
A modulation and demodulation unit for processing a baseband signal of a message transmitted and received with the base station;
A predetermined soft setting completion message that configures a session commit bit indicating whether or not a new session setting is applied when all session settings are completed after negotiating with the base station for at least one session setting. It was received from the base station, according to the result of examining the session commit bit, if the current session configuration is continuously used, to maintain a physical channel set in advance in connection with the base station, the session And a controller that releases a physical channel associated with the base station when a commit bit instructs application of the new session . 32. The terminal apparatus according to claim 31, wherein the soft setting completion message further includes a session setting token field for indicating a session setting characteristic identifier used when all the session settings are completed. If the session commit bit indicating the application of the new session, wherein the controller, prior to SL terminal apparatus according to claim 32, wherein applying a session configuration mapped to the session set token. The controller, after negotiating with the base station for at least one session setting, when receiving from the base station a predetermined session deletion message constituting a characteristic identifier indicating at least one session setting to be deleted 32. The terminal device according to claim 31, wherein the terminal device is configured to delete the instructed at least one session setting from a memory. The terminal apparatus according to claim 34 , wherein the controller transmits a response message to the session deletion message to the base station.

Images