Abstract
This paper investigates the potentials of Traffic
Steering (TS) in Carrier Aggregation (CA) deployments. TS
is defined as the mechanism to optimally distribute traffic
among the deployed cells. Obviously, such functionality is rather
crucial in scenarios where solely non-CA User Equipments (UE)
are present. The introduction of CA is expected to simplify
inter-layer load balancing, as CA UEs can concurrently connect
to multiple carriers. In order to evaluate the relevance of TS
in CA environments, a simple TS framework is developed,
where load balancing decisions are applied in both Radio
Resource Control (RRC) UE states. System level simulations
have been conducted for different deployments and CA
UE ratios. The corresponding results have shown that TS
should be mandatory for any CA penetration below 50%,
irrespective to the network deployment. Nevertheless, for
scenarios where the number of deployed carriers is greater
than the multi-carrier connectivity capabilities of the CA
device, TS should be applied even for higher CA UE ratios,
since the CA scheduler cannot solely resolve the load imbalances.
Steering (TS) in Carrier Aggregation (CA) deployments. TS
is defined as the mechanism to optimally distribute traffic
among the deployed cells. Obviously, such functionality is rather
crucial in scenarios where solely non-CA User Equipments (UE)
are present. The introduction of CA is expected to simplify
inter-layer load balancing, as CA UEs can concurrently connect
to multiple carriers. In order to evaluate the relevance of TS
in CA environments, a simple TS framework is developed,
where load balancing decisions are applied in both Radio
Resource Control (RRC) UE states. System level simulations
have been conducted for different deployments and CA
UE ratios. The corresponding results have shown that TS
should be mandatory for any CA penetration below 50%,
irrespective to the network deployment. Nevertheless, for
scenarios where the number of deployed carriers is greater
than the multi-carrier connectivity capabilities of the CA
device, TS should be applied even for higher CA UE ratios,
since the CA scheduler cannot solely resolve the load imbalances.
| Original language | English |
|---|---|
| Title of host publication | Vehicular Technology Conference (VTC Spring), 2014 IEEE 79th |
| Number of pages | 5 |
| Publisher | IEEE |
| Publication date | 2014 |
| ISBN (Electronic) | 978-1-4799-4482-8 |
| DOIs | |
| Publication status | Published - 2014 |
| Event | 2014 IEEE 79th Vehicular Technology Conference : VTC2014-Spring - Seoul, Korea, Republic of Duration: 18 May 2014 → 21 May 2014 http://www.ieeevtc.org/vtc2014spring/ |
Conference
| Conference | 2014 IEEE 79th Vehicular Technology Conference |
|---|---|
| Country/Territory | Korea, Republic of |
| City | Seoul |
| Period | 18/05/2014 → 21/05/2014 |
| Internet address |
| Series | I E E E V T S Vehicular Technology Conference. Proceedings |
|---|---|
| ISSN | 1550-2252 |