In this letter, we study the coverage of base stations (BSs) in heterogeneous cellular networks, where BSs with different transmit powers are randomly deployed. Specifically, the boundary of coverage is formulated analytically as the intersection of circles when a multiplicative bias is applied for BS association. Moreover, the effect of the transmit power and the path loss exponent on the coverage is investigated. Furthermore, for femto BSs with low transmit powers which are deployed to offload the traffic of the cellular system, it is shown that the expected number of offloaded users is concave with respect to the transmit power. Finally, the coverage of BSs is evaluated through simulations, which verify the accuracy of the presented analysis.
|Number of pages||4|
|Journal||IEEE Communications Letters|
|Publication status||Published - 2016 Jun|
Bibliographical noteFunding Information:
Manuscript received January 10, 2016; accepted April 4, 2016. Date of publication April 12, 2016; date of current version June 8, 2016. This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (NRF-2015R1D1A1A01057529). The associate editor coordinating the review of this letter and approving it for publication was J. Lee.
© 1997-2012 IEEE.
All Science Journal Classification (ASJC) codes
- Modelling and Simulation
- Computer Science Applications
- Electrical and Electronic Engineering