RFShared vs. Assigned Carrier in LTE: Key Differences Explained
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This article explores the distinctions between Shared Carriers and Assigned Carriers in the context of LTE (Long-Term Evolution) technology. We’ll examine how these carrier types differ in terms of bandwidth efficiency, network configuration, handover complexity, and more. Let’s dive in!
Shared Carrier vs. Assigned Carrier: A Comparative Overview
In essence, shared carriers involve multiple Radio Access Technologies (RATs), such as GSM and LTE, utilizing the same frequency spectrum. Conversely, assigned carriers dedicate separate frequency carriers to each RAT.
Figure 1: Illustrates the Shared Carrier concept.
The following table summarizes the key differences between shared and assigned carriers:
| Features | Shared Carrier | Assigned Carrier |
|---|---|---|
| Bandwidth Efficiency | High, carriers of different RATs (e.g., GSM, LTE) utilize the same bandwidth assigned to the telecom operator. | Low, carriers of different RATs utilize separate bandwidth. |
| Network Configuration | Complex | Simple |
| Inter-Frequency Handover | Complex (Refer to Inter-RAT Handover) | Simple |
| Call Establishment | Fast, due to less signaling overhead | Slow |
| Hardware/Software | Less demanding. It doesn’t typically require additional equipment when moving from one RAT to another. | More demanding. |
Real-World Application: VoLTE and Carrier Modes
These carrier concepts play a significant role in LTE, particularly in VoLTE (Voice over LTE) implementations.
- Shared Carrier Mode: In this mode, both the VoLTE carrier (for voice) and the data carrier occupy the same frequency spectrum.
- Assigned Carrier Mode: Here, two dedicated carriers are assigned, one for VoLTE and the other for data transmission.
