The high speed downlink packet access (HSDPA) Expansion 1, 4M-8M feature enables subscribers to enjoy new services and fast download speeds. This feature enables the SGSN to support a maximum downlink rate of 8 Mbit/s.

Benefits

 Table 1 Benefits of this feature

For...	Benefits
Carriers	This feature enables carriers to provide downlink data services with higher bandwidths, improving the competitiveness of the services.
Subscribers	This feature enables subscribers to enjoy high-speed access services.

Requirements

NEs Involved

 Table 2 NEs involved in this feature

UE	BSC	RNC	SGSN	GGSN	HLR
√	-	√	√	√	√

http://localhost:7904/pages/31185560/15/31185560/15/resources/public_sys-resources/icon-note.gif NOTE:

In Table 2, "√" indicates that the NE is required, and "-" indicates that the NE is not required.

 Table 3 NE functions

NE	Function
UE	Replaces subscribed QoS parameters with configured ones, and then negotiates with the GGSN and RNC using the configured QoS parameters.
RNC	Transmits data for the UE according to the negotiated QoS parameters.
GGSN	Works with the SGSN to complete the QoS negotiation. Transmits data for the UE according to the negotiated QoS parameters.
SGSN	Negotiates QoS parameters for the UE according to the UE request, subscription data, and license information, and informs the NEs involved of the negotiated QoS parameters. Transmits data for the UE according to the negotiated QoS parameters.
HLR	Configures subscribed QoS parameters.

Supporting Versions

 Table 4 USN9810 versions that support this feature

Product	Supporting Version
USN9810	V900R011C00 and later

License Requirement

This feature is an optional function of the USN9810. You need to load the license that supports this feature. The license control item is HSDPA Expansion 1, 4M-8M.

Application Limitations

Interaction with Other Features

None

WSFD-110901 HSDPA, 2M-4M must be enabled for the HSDPA Expansion 1, 4M-8M feature.

Application Scenario

This feature is used when carriers need to provide high-speed downlink packet services for universal mobile telecommunications system (UMTS) subscribers.

Implementation Principles

For details, see WSFD-110903 HSDPA Expansion 2, 8M-16M Implementation Principle.

Feature Measurement Counters

 Table 5 Measurement counters

Measurement Unit	Measurement Counter
Iu mode radio resource	HSDPA Expansion 1,4M-8M users

Impact on the System

None

Charging and CDR

The length of the QoS field in the charging data record (CDR) is determined by actual conditions.

Feature Specifications

 Table 6 Specifications of this feature

Item	Specifications
Maximum downlink bit rate (Mbit/s)	8

Standards Compliance

• 3GPP TS 25.308: "UTRA High Speed Downlink Packet Access (HSDPA); Overall description; Stage 2"
• 3GPP TS 25.899: "High Speed Download Packet Access (HSDPA) enhancements"
  

Release History

 Table 7 Release history and enhancement

Feature Version	Product Version	Details
WSFD-110902, 01	V900R011C00	First official release.

Parent topic: HSPA

Related tasks

Activating the HSDPA Expansion 1, 4M-8M Feature

Deactivating the HSDPA Expansion 1, 4M-8M Feature

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