Insert subscriber data ack the sgsn responds back to the hlr. In 3gpp architectures, gtp and proxy mobile ipv6 based interfaces are specified on various interface points. Wo2053896a1 communication between mmes4sgsn and pcrf. Gtp can be decomposed into separate protocols, gtpc, gtpu and gtp. The sgsn monitors the state of the mobile station and tracks its movements within a given geographical area. Sep, 2019 umts networks used the same packetswitched approach that gprs and edge used and made use of sgsn and ggsn in the core network to support mobile data services. Ggsn gateway gpsr support node is the mobility anchor point within the mobile packet core network. In the user plane between the ms and sgsn, the ip packets are processed by the sdncp and llc protocol layer entities. The ggsn together with the sgsn handle packet transmissions between the gprs network and external packet switched networks, such as the internet or an x.
Gprs tunnelling protocol is the defining ip protocol of the gprs core network. Gprs and edge are both 2g technology, but edge is significantly faster with a download speed of up to 384kbps. The sgsn is capable of initiating the context modification or negotiating a pdp context modification initiated by. The sgsn handles the protocol conversion from the ip used in the backbone network to the subnetworkdependent convergence protocol sndcp and logical link control llc protocols used between the sgsn and the mobile users. Gr interface between sgsn and hlr is used to get the user profile, the current sgsn address and the pdp addresses for each user in plmn. Global system for mobile communications gsma digital, mobile, radio standard developed for mobile, wireless, voice communications. A single ms attaches to only one sgsn, however, it may have multiple pdp addresses that are all active at the same time. Sgsn selection procedure lte and beyond techblog on. To do all this,the ggsn keeps a record of active mobile users and the sgsn the mobile users are attached to. In here, rnc integrates with mgw and sgsn for cs data and for ps data. The sgsn handles the allocation of ip addresses to the mobile phones, serves as the interface to the charging system and provides the mobile phone with the ip address to reach the ggs. What are the functionality difference bw sgsn and msc in. The sgsn is the service access point to the gprs network for the mobile user.
Statically assigned pdp addresses are usually anchored at a ggsn in the subscribers home network. Short for service gprs support node, it mediates access to network resources on behalf of mobile subscribers ms and implements the packet scheduling policy between different qos classes. Sep 01, 2014 ggsn gateway gpsr support node is the mobility anchor point within the mobile packet core network. For customers, this meant new 3gumts capable mobile phones that could support the new access technology as well as the new frequencies that umts networks employed.
There are two key variants of the gsn, namely gateway and serving gprs support node. Umts networks used the same packetswitched approach that gprs and edge used and made use of sgsn and ggsn in the core network to support mobile data services. Radio access network of wcdma consists of radio network controller rnc and nodeb. From a network architecture point of view, ggsn is situated between the serving gprs support node sgsn and the external data networks such as the internet and x. The pgw ggsn would not see the difference between services authorized over rx and services requested by the ue via the mmes4 sgsn to pcrf interface 610. The gateway gprs support node ggsn acts as interface between the gprs backbone and the external packet data network pdn. It is not tied directly to a specific interface, but it can be associated dynamically with an interface. Sgsn for the user and ggsn to provide packet routing functions, it will be the base station controller controller bsc, basestation sent the packet sent to other sgsn or via ggsn external internet network transmission. The ggsn is responsible for the interworking between the gprs network and external packet switched networks, like the internet and x.
Rnc and nodeb nodes in wcdma architecture are completely replaced by more flat architecture with only enodeb in lte. Possible ggsn meaning as an acronym, abbreviation, shorthand or slang term vary from category to category. Gateway gprs support node ggsn the gateway gprs support node ggsn is a main component of the gprs network. Mme vs pgw vs sgw in lte mme,pgw,sgw functions in lte. It provides connectivity to the sgsn serving gprs support node and pdn packet data network. Location updating request the mobile had initiated a combined attach, so the sgsn also updates the location information at the mscvlr. Oct 16, 2012 enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on youtube. To configure the connections between the ggsn and sgsn, and the ggsn and pdns, the cisco ggsn software uses an internal interface called a virtual template interface. Gprs tunneling protocol gtp is a group of ipbased communications protocols used to carry general packet radio service gprs within gsm, umts and lte networks. Primarily it is the protocol which allows end users of a gsm or wcdma network to move from place to place while continuing to connect to the internet as if from one location at the gateway gprs support node ggsn. It is not tied directly to a specific interface, but it.
Mme stands for mobility management entity, pgw stands for pdn gateway and sgw stands for serving gateway. Gprsan extension of gsm networks that provides mobile, wireless, data communications umtsan extension of gprs networks that moves toward an allip network by delivering broadband information, including commerce and entertainment. Gc interface between ggsn and hlr is used by ggsn to query users location and profile to update its location register. Sgsntoggsn gn and ggsntopdn gi interface on globalspec. From a network architecture point of view, ggsn is situated between the serving gprs support node sgsn and the external data. Objectives upon completion of this chapter, you should be able to describe the sgsntoggsn interface. It is important to understand the difference between a ms attaching to a sgsn and a ms activating a pdp address. Only gtpu is defined for the iu interface between the serving gprs support node sgsn and the umts terrestrial radio access network utran. Then, the ggsn of the hplmn connects to the pdn of the hplmn. Ip format for the internet and sends that to the destination data network e. Yatehsshlr and yateucn for mobile virtual network operators. It allows mobile users to access text based data services without. The gateway gprs support node ggsn is a main component of the gprs network.
Session state information of the subscriber is always maintained at the ggsn. Technology what is the difference between sgsn and ggsn. It then sends back to the sgsn the result of the secondary pdp context creation with a negotiated qos. Gprs attach and pdp context activation for a class b terminal. On the other side the sgsn relays the data between the sgsn and relevant ggsn and vice versa. Gprs architecture works on the same procedure like gsm network, but, has additional entities that allow packet data transmission. The packet data protocol pdp context is a connection between a mobile station and the end address that goes through the sgsn and ggsn. It includes identifying information about the mobile customer used by each server or device to properly forward the call data to the next hop in the carrier network, typically using a gtp tunnel between the. This data network overlaps a secondgeneration gsm network providing packet data transport at the rates from 9.
Difference between wcdma and lte compare the difference. Gprs network interfaces um,gb,gn,gp,gi,gr,gc,gf,gd,gs. Sgsn and ggsn are the two core network elements of the general packet radio service which enables internet to become mobile. Used between sgsn and bss for data transfer and mobility management. Introduction of the 3g network made video calling and seamless streaming of video possible. Wile, the sgsn connects to the ggsn that exist in the visitors home country hplmn. Ciphering is encyption and decyption of user id in gsm network. Forwarding of ip packets between the sgsn and a pdn. Ipbased transport of user data between sgsn and the utran ip or ss7based signaling transport gateway gsn ggsn gateway for umts packet service to external data networks e. It does this by carrying the subscribers data from the subscribers current serving gprs support node. Conversely, dynamically assigned pdp addresses can be anchored either in the subscribers home network or the network that the user is visiting. Gateway gprs support node ggsn the gateway gprs support node ggsn 1 is one of two components of the gprs ps domain.
The ggsn creates an uplink gtp tunnel to route ippdu from sgsn to ggsn. The sgsn selection is required when the ue handovers from 3g to 4g. The sgsn performs the same functions as the msc for voice traffic. This procedure is used to update the mn and the ggsn. Cs core consists of media gateway mgw and mscs mobile switching centreserver, while ps core consist of serving gprs support node sgsn and gateway gprs support node ggsn. Oct 07, 2018 therefore, the ms connects through the sgsn of the network the ms currently exist in the vplmn. Gprs tunneling protocol gtp is a group of ip based communications protocols used to carry general packet radio service gprs within gsm, umts and lte networks. Update location ack the hlr now responds back to the sgsns update location message. Mme stands for mobility management entity, pgw stands for. Sgsn serving gprs support network ggsn gateway gprs support node. The ggsn converts the gprs packets coming from the sgsn into the appropriate packet data protocol pdp format e. What is the basic difference between sgsn and ggsn in gprs.
This page compares mme vs pgw vs sgw used in lte architecture and mentions functional difference between mme,pgw and sgw. As a result the implementation in the pgw ggsn would not have to support ue requested resources as all. There are procedures where the source sgsn must be contacted by the target mme. The pgwggsn would not see the difference between services authorized over rx and services requested by the ue via the mmes4sgsn to pcrf interface 610. The sndcp layer maps the ip protocol characteristics onto the characteristics of the underlying network. The ggsn package improves the gis capabilities of r, making possible to add 18 different north symbols and scale bars in kilometers, meters, nautical miles, or statue miles, to maps in geographic or metric coordinates created with ggplot or ggmap to install the cran version use. As a result the implementation in the pgwggsn would not have to support ue requested resources as all. Verify that the procedure is repeated if not successfully completed, and that the sgsn repeats the create pdp context request message to the next ggsn address until no more ggsns are.
Update location ack the hlr now responds back to the sgsn s update location message. Sgsn selection procedure lte and beyond techblog on 4g. Pgwggsn for mvnos to stay ahead of competition pgwggsn, developed in sweden by leissner, is a standardized packet core component that operators and mvnos need between the gsm, umts and lte network and the internet. Pgwggsn for mvnos to stay ahead of competition leissner. Nov 17, 2019 ggsn was therefore added to the mobile core network as a gateway to connect the gprs network to the external data world. It is responsible for establishing the packet data protocol pdp context with the ggsn gateway gprs support node upon activation. The ggsn receives data from a mobile user via the sgsn, converts the data into the protocol format that the destination requires e. Session management, that is, a connection between a pdn and a sgsn, including dynamic ip address allocation charging. We know 10 definitions for ggsn abbreviation or acronym in 2 categories.
Short for gateway gprs support node it is the gateway between the gprs general packet radio service wireless data network and other external packet data networks such as radio networks, ip networks, or private networks. Please note that the interface between the sgsn and the ggsn in this case will be the gp interface. Pgw ggsn for mvnos to stay ahead of competition pgw ggsn, developed in sweden by leissner, is a standardized packet core component that operators and mvnos need between the gsm, umts and lte network and the internet. Short for service gprs support node, it mediates access to network resources on behalf of mobile subscribers and implements the packet scheduling policy between different qos classes. It converts the gprs packet coming from the sgsn into proper packet data protocol pdp format i. In 3gpp architectures, gtp and proxy mobile ipv6 based interfaces are specified on various interface points gtp can be decomposed into separate protocols, gtpc, gtpu and gtp gtpc is used within the gprs core network for. Oct 26, 2017 a chassis can be devoted solely to sgsn services or the sgsn system can include any colocation combination, such as multiple instances of 2. Gprsedge architecture general packet radio service enhanced data rates for global evolution duration. Apr 26, 20 the sgsn selection is required when the ue handovers from 3g to 4g. The ggsn creates a new entry in its pdp context table to route ip packets between the sgsn and the external packetswitching network, which stores the tft. It is also responsible for establishing and managing the data connections between the mobile user and the destination network.
If it is, the ggsn forwards the data to the sgsn serving the mobile user, but if the mobile user is inactive, the data are discarded. In the other direction, pdp addresses of incoming data packets are converted to the gsm address of the destination user. When a ms is already attached to a sgsn and it is about to transfer data. These terms might have been used in embedded systems for interfacing a microcontroller. Along with the packet data transport the gsm network accommodates multiple users to share. Jul, 2011 also, the ps core nodes of wcdma that consists of ggsn and sgsn are replaced by the same saegw and mme respectively. Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on youtube. On the iu interface, the radio access network application part ranap protocol is performing the control function for gtpu. The ggsn provides a number of services, for example. What are the functionality difference bw sgsn and msc in 3g. The gateway gprs support node ggsn is a primary network element in the cellular network using gprs.
Gsmgprs are well known terms for mobile communication. Your guide for roaming architecture in gprs mobile. The record kept by the sgsn and the ggsn regarding this association is called the pdp context. On the other hand, mobileoriginated packets are routed to the right network by the ggsn. For ggsn we have found 10 definitions what does ggsn mean. The sgsn or the serving gprs support node handles data traffic. The sgsn should interpret a valid request with the initiation of the creation of a tunnel between a pdp context in the sgsn and a pdp context in the ggsn. Therefore, the ms connects through the sgsn of the network the ms currently exist in the vplmn. During a mobility procedure towards a new core network node mme, a ue served by a sgsn has a previously assigned ptmsi by the source sgsn. Sgsn old msc vlr ggsn radius server dhcp server eir hlr 16. From the external networks point of view, the ggsn is a router to a subnetwork, because the ggsn hides the gprs infrastructure from the external network. Your guide for roaming architecture in gprs mobile packet core. The sgsn handles the allocation of ip addresses to the mobile phones, serves as the interface to the charging system and provides the mobile phone with the ip address to reach the ggsn or the gateway gprs support node which is the interface to the internet.
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