Cisco Cisco Packet Data Gateway (PDG)
For more information on Access Control List configuration, refer IP Access Control List chapter in System
Administration Guide.
Administration Guide.
Important
ATM VC Management Support
Support for Asynchronous Transfer Mode (ATM) virtual circuits (VC) management function of AAL2 and
AAL5 protocol by the HNB-GW in accordance with the following standards:
AAL5 protocol by the HNB-GW in accordance with the following standards:
• 3GPP TR 29.814 V7.1.0 (2007-06): 3rd Generation Partnership Project; Technical Specification Group
Core Networks and Terminals Feasibility Study on Bandwidth Savings at Nb Interface with IP transport
(Release 7)
(Release 7)
HNBGW supports PVC (permanent virtual circuits) connections with CN nodes for AAL2 and AAL5 type
of traffic. The Common Part Sublayer (CPS) payload which is carried out by the AAL2 protocol over ATM
is also configurable with this feature. It provides the dynamic Common Part Sublayer (CPS) payload
configuration for AAL2 protocol traffic over ATM for negotiation between HNB-GW and MSC during call.
Default size for payload is 45 but values may range from 1 to 64 Bytes. This feature makes the operator to
choose the CPS payload size dynamically.
of traffic. The Common Part Sublayer (CPS) payload which is carried out by the AAL2 protocol over ATM
is also configurable with this feature. It provides the dynamic Common Part Sublayer (CPS) payload
configuration for AAL2 protocol traffic over ATM for negotiation between HNB-GW and MSC during call.
Default size for payload is 45 but values may range from 1 to 64 Bytes. This feature makes the operator to
choose the CPS payload size dynamically.
Cell Broadcasting Service (CBS) Support
Cell Broadcast is a mobile technology that allows a text or binary message to be distributed to all mobile
equipments and similar devices connected to a set of cells or within a designated geographical area. Cell
broadcast messages are destined to radio cells rather than a specific or a few mobile terminals.
equipments and similar devices connected to a set of cells or within a designated geographical area. Cell
broadcast messages are destined to radio cells rather than a specific or a few mobile terminals.
This technology is used in deploying location-based subscriber services for simultaneous delivery of messages
to multiple users in a specific geographical area. Cell Broadcast Center (CBC), located at the operator side,
is a node which is a source of CBS and connected to RNC in UMTS networks via standardized interface over
TCP/IP protocol. The RNC-CBC interface (Iu-BC) is described in the 3GPP standard TS 23.041 and TS
25.419. CBC sends broadcasting messages to the RNC with a list of cells/service areas (where the message
is to be broadcast) at a repetition rate at which the messages will be broadcast. This repetition rate depends
on the type of info in the CBS messages; for example, road traffic information will require more frequent
transmission than weather information.
to multiple users in a specific geographical area. Cell Broadcast Center (CBC), located at the operator side,
is a node which is a source of CBS and connected to RNC in UMTS networks via standardized interface over
TCP/IP protocol. The RNC-CBC interface (Iu-BC) is described in the 3GPP standard TS 23.041 and TS
25.419. CBC sends broadcasting messages to the RNC with a list of cells/service areas (where the message
is to be broadcast) at a repetition rate at which the messages will be broadcast. This repetition rate depends
on the type of info in the CBS messages; for example, road traffic information will require more frequent
transmission than weather information.
In case of Femto UMTS network, RNC is replaced with Home NodeB (HNB) and HNB-GW and therefore
the CBC is connected to HNB-GW through Iu-BC interface. HNB-GW routes the broadcasting messages to
HNB using the available SCTP connection with HNB. In order to exchange the broadcasting messages, Service
Area Broadcast Protocol (SABP) is used between the CBC and HNB-GW. HNB-GW forwards these SABP
messages individually to respective HNBs corresponding to the Service Area(s) present in the Service-Area
list of received SABP messages by constructing new SABP messages. HNB-originated SABP messages are
individually forwarded by HNB-GW to CBC. HNB-GW acts as an aggregator for the incoming SABP response
messages from HNBs and forwards the combined SABP message to the CBC.
the CBC is connected to HNB-GW through Iu-BC interface. HNB-GW routes the broadcasting messages to
HNB using the available SCTP connection with HNB. In order to exchange the broadcasting messages, Service
Area Broadcast Protocol (SABP) is used between the CBC and HNB-GW. HNB-GW forwards these SABP
messages individually to respective HNBs corresponding to the Service Area(s) present in the Service-Area
list of received SABP messages by constructing new SABP messages. HNB-originated SABP messages are
individually forwarded by HNB-GW to CBC. HNB-GW acts as an aggregator for the incoming SABP response
messages from HNBs and forwards the combined SABP message to the CBC.
Following are the major functions of SABP:
• Message Handling: Broadcasting of new CB messages, amend and improve the existing broadcast
messages and to halt broadcast of particular messages.
• Load Handling:Ascertaining the load on broadcast channels at any specific point of time.
HNB-GW Administration Guide, StarOS Release 19
10
HNB Gateway in Wireless Network
ATM VC Management Support