KR20050037043A - Settlement of quality of service about default access point name in wcdma packet network - Google Patents

Abstract

The present invention provides a default quality of service corresponding to the default APN when the mobile station does not explicitly raise the APN and quality of service, thereby providing the default APN in the WCDMA packet network. To determine the quality of service for

According to the present invention, in the process of establishing a session between a mobile station and a network in a WCDMA packet network including a mobile station, a serving GPRS support node (SGSN), and a GPRS gateway support node (GGSN), the mobile station sets a default access point name (APN). Access point name), wherein the SGSN receives an active PDP context request message from a mobile station and determines a quality of service parameter before transmitting a create PDP context request message to the GGSN. The allocation / maintenance priority is set to a parameter value in the stored default quality of service, and the traffic class is set to a value less sensitive to delay among the QoS value transmitted from the mobile station and the default QoS value, and the transmission order is set by the mobile station. Set to the transmitted QoS value, maximum SDU size, uplink maximum bitrate, downlink maximum bitrate Respectively, the SDU error rate and the redundant bit error rate are set to the larger value among the QoS values transmitted from the mobile station and the default QoS value, respectively. The transmission of the SDU is set based on the QoS value transmitted by the mobile station, and the transmission delay is set to a larger value between the QoS value transmitted by the mobile station and the default QoS value, and the traffic processing priority is set to the value transmitted by the mobile station. The lower guarantee bit rate and the lower guarantee bit rate may be set to a smaller value among the values transmitted by the mobile station and a value in the default QoS, respectively.

Description

Set of Quality of Service for Default Access Point Name in WCDMA Packet Network}

The present invention relates to a method of determining Quality of Service (QoS) for a default access point name (APN) in an asynchronous code division multiple access (WCDMA) packet network.

In general, a WCDMA General Packet Radio Service (GPRS) includes two nodes, a Serving GPRS Support Node (SGSN) and a Gateway GPRS Support Node (GGSN).

The SGSN tracks the location of the mobile station within its service area, sends packets to the mobile station, receives packets from the mobile station, and sends the received packets to a Radio Network Controller (RNC) or the GGSN. To pass. The GGSN receives packets from an external network and forwards the received packets to the SGSN or receives packets from the SGSN and forwards the received packets to the external network.

This will be described in more detail with reference to FIG. 1.

1 is a block diagram of a typical WCDMA packet network.

Bearers are provided by the Packet Data Protocol (PDP) context. Common Packet Switching Domain Core Networks (CNs) provide packet-switched services and allow for the efficient transmission of bursty data transfers or large amounts of data, and real-time and non-real-time traffic such as voice or video. It is designed to support several levels of quality of service.

The Serving GPRS Support Node (SGSN) basically tracks the location of a mobile station (MS) consisting of a terminal equipment (TE) and a mobile terminal (MT), and performs security functions and access control. . The SGSN is connected to a UMTS Terrestrial Radio Access Network (UTRAN) via an Iu interface and to a Gateway GPRS Support Node (GGSN) via an IP-based intra PLMN backbone network (Gn interface). When the SGSN activates the PDP context, the SGSN sets the PDP context to be used for routing purposes with the GGSN and the UTRAN, that is, a Radio Network Controller (RNC) within the UTRAN to be used by the subscriber. The GGSN then provides interworking with external packet switched networks. The GGSN may be connected to a plurality of SGSNs through the intra PLMN or inter PLMN backbone networks.

As mentioned above, in order to access packet switched services, i.e. to transmit and receive packet data, the MS informs the GGSN of itself before interworking with an external data network can be initiated. In order to activate the PDP context suitable for the SGSN. Applicable PDP context related operations are defined in 3GPP Specification TS 23060. During interworking, user data is transmitted by encapsulating and tunneling packet switched specific protocol information into data packets.

In order to transmit and receive information, the packet data protocol (PDP) is activated, whereby the packet data address used for the packet data connection is known at the gateway GPRS support node (GGSN). The SGSN activates the packet data connection with an Activate PDP Context Request and assigns the required quality of service, network service access point identifier and possible access point name (APN).

The quality of service, for example, specifies how Packet Data Units (PDUs) will be processed during transmission in a GPRS network. The quality of service defined for the access addresses may, for example, support gateway GPRS in the presence of transmission order, buffering (packet queues), rejection of packets at the supporting node, and especially in the presence of packets transmitted simultaneously on one or more connections. Used to control the node.

At this time, if the mobile station does not explicitly raise all of the PDP type, address and access point name (APN), if there is only one subscriber profile in the home location register (HLR) and the subscribed APN is a wildcard, The PDP type uses the value of the subscriber profile of the home location register, and the APN uses the default APN value inside the SGSN. At this time, the service quality is negotiated on the service quality based on the service quality in the subscriber profile of the home location register.

In addition, if the mobile station transmits a PDP type and does not transmit an address, the APN is transmitted if the PDP type transmitted by the mobile station matches at least one subscriber profile of the home location register and one of the subscribed APNs is a wild card. Uses the default APN value inside the SGSN. At this time, the service quality is negotiated based on the service quality in the subscriber profile of the home location register where the APN is a wild card.

In the above two cases, if the mobile station does not explicitly notify the quality of service to be requested, the call is set to the quality of service value set in the subscriber profile stored in the home location register. In this case, if the quality of service of the subscriber profile whose APN is wildcard is set too high or too low, the quality of service for the default APN may not be appropriate, which may affect the service.

Accordingly, the present invention is to solve the above problems of the prior art, when the mobile station does not explicitly raise the APN and quality of service, by providing a default quality of service corresponding to the default APN, the appropriate quality of service to the default APN An object of the present invention is to provide a method for determining a quality of service for an default access point name (APN) in a WCDMA packet network that can be provided.

The present invention for achieving the above object, in the process of establishing a session between the mobile station and the network in a WCDMA packet network including a mobile station, a serving GPRS support node (SGSN), and a GPRS gateway support node (GGSN), In the case of using a default access point name (APN), the SGSN receives an active PDP context request message from the mobile station and determines a quality of service parameter before transmitting a create PDP context request message to the GGSN. The SGSN sets an allocation / maintenance priority to a parameter value in a default quality of service stored by the SGSN, and sets a traffic class to a value that is less sensitive to delay among the QoS value transmitted from the mobile station and the default QoS value. , The transmission order is set to the QoS value sent by the mobile station, and the maximum SDU size The bit rate and the downward maximum bit rate are respectively set to a smaller value among the QoS values transmitted from the mobile station and the default QoS, and the SDU error rate and the redundant bit error rate are respectively greater than the QoS value transmitted from the mobile station and the default QoS value. Value, the transmission of an error SDU is set based on the QoS value transmitted by the mobile station, the transmission delay is set to a larger value of the QoS value transmitted by the mobile station and the default QoS value, and the traffic processing priority is set to The lower transmission bit rate and the lower guaranteed bit rate may be set to a smaller value among the values transmitted by the mobile station and the default QoS value, and the lower guaranteed bit rate and the lower guaranteed bit rate may be set to the smaller value among the values transmitted by the mobile station and the default QoS.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

2 is a diagram illustrating a session establishment process in a general WCDMA packet network.

The mobile station MS sends an Activate PDP Context Request message to the SGSN. At this time, the mobile station selects whether to use a static address or a dynamic address (where a static address is included if using a static address), a quality of service (QoS) to be used, and a reference point of a network to be externally connected. The message is transmitted including an APN for selecting a service.

The SGSN then selects the GGSN based on the APN and subscriber information transmitted by the mobile station and sends a Create PDP Context Request message to the corresponding GGSN. Accordingly, a PDP context is created in the GGSN. The GGSN sends a Create PDP Context Response to the SGSN by assigning an address if it is a dynamic address.

SGSN sets up RN and Radio Access Bearer (RAB) with appropriate quality of service to subscriber, and RN sets up Radio Bearer (RB) with mobile station. Here, if the quality of service is down, SGSN sends an Update PDP Context Request message to inform GGSN that the quality of service is down. GGSN responds with an Update PDP Context Response message. The SGSN informs the mobile station via the Activate PDP Context Accept message that the PDP context has been successfully activated. In this case, when the mobile station requests a dynamic address, the mobile station informs the dynamic address.

Through this process, the mobile station can establish a session for data service. When the default APN is used in the session establishment, the quality of service value is determined by comparing the quality of service value requested by the subscriber with the default quality of service value set in the SGSN.

The quality of service value consists of several parameters. The default quality of service value consists of the following parameters: That is, the default quality of service values include Allocation / Retention Priority, Traffic Class, Delivery Order, Delivery of Erroneous SDU, and Maximum SDU. Maximum SDU size, upward maximum bit rate, downward maximum bit rate, residual bit error ratio, SDU error rate, transfer delay, traffic handing priority, upward guarantee bit rate, downward guarantee It includes bit rates.

Here, the allocation / maintenance priority is a value representing a relative priority for resource allocation and maintenance, and uses the parameter value in the default quality of service as it is. Since the assignment / maintenance priority value is not a value transmitted from the mobile station, the value in the default quality of service is used as it is.

Traffic classes are classified into four classes, conversational, streaming, interactive, and background, depending on the delay sensitivity of the traffic. In the traffic class, a value less sensitive to delay is selected from a value transmitted from a mobile station and a default QoS value. That is, if the mobile station raises to the conversational channel and the traffic class value in the default QoS is interactive, the interactive is selected. The traffic class, however, is determined interactively if the mobile station requires a value of zero.

Each parameter means to use the subscribed QoS parameter when the mobile station requests a value of 0. The parameter in the default QoS is used as it is.

The order of delivery is determined by the value sent by the mobile station to a value that specifies that data should be delivered in order.

The maximum SDU size, the maximum maximum bit rate, and the maximum maximum bit rate are determined as the smaller of the values transmitted by the mobile station and the values in the default QoS.

The value of the SDU error rate and the excess bit error rate is determined as the larger of the value transmitted by the mobile station and the default QoS value.

The forwarding of an error SDU is a value indicating whether or not an error is forwarded for the found SDU, and is determined based on a value transmitted by the mobile station.

The transmission delay is a delay time that occupies 95% of the delivered SDUs, and is determined by a larger value of a value transmitted by the mobile station and a default QoS value.

The traffic processing priority is a meaningful value only when the traffic class is interactive, and indicates a priority indicating relative priority with respect to other traffic. The priority of the traffic processing is determined by a smaller value among the values transmitted by the mobile station and the default QoS value.

The uplink guaranteed bit rate and the downlink guaranteed bit rate are meaningful only for the traffic class being conversational and streaming. The uplink guaranteed bit rate and the downlink guaranteed bit rate are determined as the smaller value among the values transmitted from the mobile station and the default QoS.

According to the present invention as described above, in the case of using the default APN, by comparing the quality of service in the subscriber profile and the default quality of service set in the SGSN, by determining the appropriate quality of service, providing the optimum service to the subscriber It can work.

1 is a schematic block diagram of a typical WCDMA packet network.

2 is a diagram illustrating a process of establishing a session with a terminal in a general WCDMA packet network.

Claims (2)

In establishing a session between a mobile station and a network in a WCDMA packet network including a mobile station, a serving GPRS support node (SGSN), and a GPRS gateway support node (GGSN), the mobile station sets a default access point name (APN). In the case of using the SGSN, the SGSN receives an active PDP context request message from the mobile station, and determines a quality of service parameter before transmitting a create PDP context request message to the GGSN, The SGSN sets an allocation / maintenance priority to a parameter value in a default quality of service stored by the SGSN, and sets a traffic class to a value less sensitive to delay among the QoS value transmitted from the mobile station and the default QoS value. The transmission order is set to the QoS value transmitted by the mobile station, and the maximum SDU size, the uplink maximum bit rate, and the downlink maximum bit rate are respectively set to a smaller value among the QoS values transmitted from the mobile station and the values in the default QoS, and the SDU error rate, The redundant bit error rate is set to a larger value among the QoS value transmitted from the mobile station and the default QoS value, the transmission of the error SDU is set based on the QoS value transmitted by the mobile station, and the transmission delay is transmitted by the mobile station. Set a higher one of a QoS value and the default QoS value, and the traffic processing priority is different from the value transmitted by the mobile station. Characterized in that to set the smaller of a default QoS value, and up-guaranteed bit-rate and down-guaranteed bit rate is set to a value in a value in each of the mobile station and the default QoS is the transmission value. The method of claim 1, If the mobile station requires a value of zero, each parameter of the quality of service is set to a parameter value of a default quality of service stored in the SGSN.