Dynamic Spectrum Sharing

Perfect Stepping Stone to 5G

One Spectrum, Two Technologies

Samsung’s Dynamic Spectrum Sharing (DSS) offers a unique solution for an easy, uninterrupted transition to 5G.
This advanced technology can be leveraged to deploy 5G networks in LTE spectrum bands, minimizing the impact on existing services.
With DSS, mobile network operators can reuse their existing LTE hardware and infrastructure and enable 5G with software upgrade.
However, spectrum resource limitation may be caused as two different systems need to share finite resources and
overhead from LTE and NR signal transmission impacts overall capacity of the network. Samsung’s DSS solution dynamically
assigns resources to LTE and 5G based on the traffic demands for each technology, allowing optimal resource utilization.

Facilitating a Smooth Shift to 5G

Today, low spectrum bands are largely dominated by LTE. Therefore, operators who deploy 5G in low spectrum bands want a way for smooth migration minimizing the impact on LTE networks. One way to solve this is with LTE-NR dynamic spectrum sharing. By utilizing this feature, service providers can deploy LTE and NR in the same bands. Within one carrier network, LTE users access the network using LTE cells while 5G users are connected using 5G cells. Samsung’s DSS supports a variety of deployment options, increasing flexibility for operators. Our solution can run on both virtualized and physical RAN platforms. Customers can choose to rollout new hardware but they can also reuse legacy. Samsung’s DSS solution can also co-exist with 2G, 3G and LTE vertical services such as eMTC and NB-IoT, enabling a 5G launch without negatively impacting legacy systems.

Boosting Coverage Enhancement for 5G

Deploying 5G in low spectrum bands enhances network coverage. In general, low spectrum bands deliver wider coverage than high spectrum bands. As a result, mobile network operators need to secure additional low-band NR bands or deploy coverage densification solutions. By deploying 5G in low spectrum bands, coverage can be expanded at a faster rate. In addition, when 5G carrier aggregation (CA) is used to aggregate the low- and mid-bands, the control and signaling message can be transferred to the low frequency band, while the data rate can be boosted with extended coverage in mid-band. This has a direct improvement on the overall cell performance. Samsung’s DSS solution inter-operates with other FDD carriers, mid-band TDD carriers, and mmWave band TDD carrier to benefit from CA technologies. As a result, mobile network operators can provide faster cell throughput and extended coverage.

LTE

5G

Fully Optimized Network
with Maximized Resource Utilization

Samsung’s DSS solution provides flexible resource management that corresponds to the constantly evolving LTE and 5G traffic. An intelligent scheduler compares the traffic priority and user demands of LTE and 5G and allocates resources of the shared spectrum accordingly. The intelligent scheduler can make such decisions regarding resource allocation within milliseconds, enabling a real time resource management. Therefore, NR resource allocation increases and LTE resource allocation decreases when NR traffic peaks, and vice versa when LTE traffic peaks. DSS can also respond to 5G traffic bursts that occur and over time as 5G becomes more mainstream.

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