Advantages of CoMP | Disadvantages of CoMP, Coordinated Multipoint LTE
This page covers advantages and disadvantages of CoMP (Coordinated Multipoint) LTE. It mentions benefits or advantages of CoMP and drawbacks or disadvantages of CoMP.
What is Coordinated Multipoint (CoMP) in LTE ?
CoMP is a technique which utilizes more than one Base Station (BS) to enable communication. Using this, nodes dynamically coordinate transmission/reception of signals from UE to multiple BSs. This increases radio performance specially at cell edge by leveraging inter-cell interference. The concept is used in wireless technologies such as LTE Advanced.
The figure depicts comparison of MIMO and CoMP. As shown, CoMP does not require transmitters to be co-located physically. As shown, eNB1 and eNB2 are interfaced with high speed data connection which are at different physical locations.
CoMP falls under following two categories.
• Joint Processing: In this category, there is coordination between multiple gNBs to transmit/receive signals simultaneously to or from UE.
• Coordinated Scheduling/Beamforming: In this category, signals are concentrated in one direction towards specific receiver. It increases strength of signals to be transmitted and hence increases chances of their reception at the receiver. This reduces interference from other radio devices and improves the efficiency.
Benefits or advantages of CoMP
Following are the benefits or advantages of CoMP:
➨It helps service provider by improving network resource utilization i.e. spectrum efficiency.
➨It improves QoS (Quality of Service) to the user as there are less call drops.
➨Subscriber notices higher bandwidth due to service provided by multiple eNBs (i.e. Base Stations) at any given time.
➨It reduces impact of interference. CoMP utilizes interference constructively.
➨It improves cell edge throughput and system throughput.
➨It improves coverage of the high data rate.
➨It improves overall capacity of network.
Drawbacks or disadvantages of CoMP
Following are the drawbacks or disadvantages of CoMP:
➨Joint Processing technique requires large amount of data transfer between eNBs.
➨It requires initial expenditure.