Soft Handover Explained for Wireless Communication

Soft handover is a process in wireless communication that allows a mobile device to seamlessly transition between two or more base stations, ensuring continuous and uninterrupted communication.

This process occurs when a user moves from one cell to another, and the device switches from one base station to another without dropping the call.

The soft handover process is facilitated by the mobile device's ability to maintain multiple connections with nearby base stations.

The device continuously monitors the signal strength from each base station and switches to the one with the strongest signal, minimizing the risk of call drops.

Here's an interesting read: Signal Strength in Telecommunications

Soft handover is a feature used by CDMA and W-CDMA standards, allowing a cell phone to be connected to two or more cells during a call.

It's a form of mobile-assisted handover, where the phone continuously makes power measurements of neighboring cell sites and determines whether to request or end soft handover.

A fresh viewpoint: Media-independent Handover

Soft handover is possible due to the properties of the CDMA signaling scheme, which enables a phone to receive signals from two or more radio base stations transmitting the same bit stream on different physical channels.

This allows the phone receiver to combine the received signals, decoding the bit stream more reliably than if only one base station were transmitting.

Soft handover results in a diversity gain called soft handover gain.

Here are the key differences between soft handover and hard handover:

Cellular networks are a crucial part of our daily lives, allowing us to stay connected on-the-go. They're made up of many base stations, also known as cell sites, that work together to provide seamless coverage.

These base stations are the backbone of cellular networks, and they're responsible for facilitating the smooth transition of cellular transmission from one to another. This process is called handover, or handoff.

Handover is essential for ensuring continuous communication sessions and uninterrupted data services for mobile devices, especially when they're constantly on the move. This means you can make calls, send texts, and access the internet without any interruptions, even if you're driving or walking around the city.

Additional reading: Cellular Network

There are four main types of handover in UMTS technology. Hard handover is the most basic type, where one link is broken and another established, similar to 2G networks.

Soft handover is a more gradual process where the UE communicates simultaneously with more than one Node B or base station during the handover process.

Softer handover is a special form of soft handover where the new radio links added are from the same NodeB, simplifying the combining process.

UMTS inter RAT handover occurs when mobiles have to change between Radio Access Technologies, such as UMTS to GSM or UMTS to 4G LTE.

Here are the four types of handover in UMTS technology:

Each type of handover is used in different circumstances, such as when moving from one cell to an adjacent cell on a different frequency.

Intriguing read: Cell Global Identity

UMTS, or Universal Mobile Telecommunications System, is a 3G mobile network technology that provides faster data speeds and better voice quality compared to 2G networks. Soft handover is a feature of UMTS that allows for a more reliable and seamless handover process.

Curious to learn more? Check out: Lte Td Scdma Umts

Soft handover uses several simultaneous links to communicate with multiple base stations, which provides a more reliable and seamless way to perform handover. This is because the UE can communicate with two base stations simultaneously, and the NodeB can combine the signals from the two base stations.

In UMTS, there are three basic types of handover: hard handover, soft handover, and softer handover. Hard handover is similar to 2G networks, where one link is broken and another established. Soft handover is a more gradual process where the UE communicates simultaneously with more than one Node B or base station during the handover process.

Softer handover is a special form of soft handover that occurs when the new radio links that are added are from the same NodeB. This can simplify the combining process, as it can be achieved within the NodeB and not require linking further back into the network.

Here are the types of handover in UMTS: