Home | Reports | Technical Documents | Tech-Blog | One-Shot Gallery | Korea ICT News | Korea Communication Market Data | List of Contributors | Become a Contributor |    
Section 5G 4G LTE C-RAN/Fronthaul Gigabit Internet IPTV/Video Streaming IoT SDN/NFV Wi-Fi KT SK Telecom LG U+ Network Protocol Samsung   Korean Vendors
Real World Private 5G Cases   4 Deployment Models On-Premise Cases 5G Core Control Plane Sharing Cases

5G Core Sharing Cases

Private 5G Deployment   • Private 5G Frequency Allocation Status in Korea  South Korean government's regulations on private 5G and KT's strategy for entering the market
Cases in Korea   Private 5G Operators |   SK Networks Service (SI) Sejong Telecom (Wire-line Carrier) KT MOS (Affiliate of KT) • Newgens (SI) • NAVER Cloud more >>  
    Enterprise DIY |   Korea Hydro & Nuclear Power (Power Plant) Korea Electric Power Corporation (Energy) • Republic of Korea Navy more >>
CHANNELS     HFR Private 5G Solution (my5G)       my5G Solution Components       my5G Key Features        my5G Resources        my5G News          
CoMP (2): CoMP Coordination Areas Defined in 3GPP (7 Scenarios)
August 19, 2014 | By Dr. Michelle M. Do and Dr. Harrison J. Son (tech@netmanias.com)
Online viewer:
Comments (0)

In the CoMP scenarios defined in 3GPP Release 111 and Release 122, CoMP is used

  • within a single eNB (intra-eNB) with ideal backhaul only - in restricted areas in Release 11  
  • among eNBs (inter-eNB) with non-ideal backhaul as well - in more expanded areas in Release 12 

According to NGMN3, ideal backhaul refers to one with latency of 2.5 usecs or less and capacity of 10 Gbps or higher, whereas non-ideal backhaul refers to one with latency of 5~30 msecs (or even higher).


Release 11 and Release 12 have defined 4 and 3 scenarios, respectively. We will refer to them as scenario 1 through 7, and explain them one by one below.



Figure 1. CoMP coordination areas defined in 3GPP scenarios (Release 11 and Release 12)



 Release 11 CoMP Scenarios: Intra-eNB CoMP in Ideal Backhaul (Coordination among Cells that Belong to the Same eNB with Ideal Backhaul)

In Release 11, CoMP can be used only within the coverage area of a single base station (eNB). The coverage area of one base station can be as large as to include only one site (e.g. macro eNB 2/cell site 3 in Figure 1), or can be extended to include many sites (e.g. macro eNB 1/ cell sites 1 and 2). In Release 11, CoMP coordination is possible only among neighbor cells belonging to the same base station (i.e. intra-site cells or inter-site cells). Cells do not coordinate with their neighbor cells if they belong to different eNBs. That is, CoMP coordination is performed within one eNB only (intra-eNB CoMP). Release 11 defined the scenarios for intra-eNB CoMP in ideal backhaul as follows:


Scenario CoMP used among macro cells belonging to one site in one macro eNB (e.g. Cells 2 and 3 in Cell Site 1) - intra-site  

Scenario : CoMP used among macro cells belonging to different sites in one macro eNB (e.g. Cell 2 in Cell Site 1 and Cell 4 in Cell Site 2) - inter-site

Scenario CoMP used between a macro cell and one of its small cells (small RRHs) that has a different cell ID than the macro cell 

Scenario CoMP used between a macro cell and one of its small cells (small RRHs) that has the same cell ID as the macro cell  


Release 11 allows for intra-eNB CoMP only. Due to this restriction, CoMP standardization in Release 11 is defined only for physical layer operations, and not for interfaces between eNBs. Each eNB uses a vendor-specific CoMP algorithm, and vendor proprietary interfaces are used between base stations. So, CoMP coordination between eNBs with different vendors is not possible.


 Release 12 CoMP Scenarios: Inter-eNB CoMP in Non-Ideal Backhaul (Coordination between eNBs with Non-Ideal Backhaul)

To be able to apply Release 11 CoMP scenarios in more base stations, ideal backhaul that connects all base stations and all sites with optic fibers, and hence causes no latency is required. Practically, however, few operators can provide such ideal backhaul. To address this issue, in Release 12, CoMP scenarios and technologies have evolved to coordinate with neighbor base stations in non-ideal backhaul networks - more practical network environments - like Microwave, DSL, Cable, PON, etc. Release 12 defined the scenarios for inter-eNB CoMP in non-ideal backhaul as follows:


Scenario CoMP used among macro cells belonging to different macro eNBs (e.g. Cell 3 in eNB 1 and Cell 7 in eNB 2)

Scenario CoMP used between a macro cell and one of its small cells (small cell eNBs) 

Scenario CoMP used among small cells (small cell eNBsin a macro cell (macro cell and small cells use different channel, but small cells share the same channel)


 Reducing Interference Areas by Expanding Coordination Areas (Only CoMP between macro cells is presented below) 


■ Comparison of Scenarios



1. 3GPP TR 36.819, CoMP operation for LTE physical layer aspects (Release 11)

2. 3GPP TR 36.874, CoMP operation for LTE with non-ideal backhaul (Release 12)   

3. NGMN, RAN Evolution Project, "Backhaul and Fronthaul Evolution"   

Thank you for visiting Netmanias! Please leave your comment if you have a question or suggestion.

[HFR Private 5G: my5G]


Details >>







Subscribe FREE >>

Currently, 55,000+ subscribed to Netmanias.

  • You can get Netmanias Newsletter

  • You can view all netmanias' contents

  • You can download all netmanias'

    contents in pdf file







View All (854)
4.5G (1) 5G (101) AI (7) AR (1) ARP (3) AT&T (1) Akamai (1) Authentication (5) BSS (1) Big Data (2) Billing (1) Blockchain (3) C-RAN/Fronthaul (18) CDN (4) CPRI (4) Carrier Ethernet (3) Charging (1) China (1) China Mobile (2) Cisco (1) Cloud (5) CoMP (6) Connected Car (4) DHCP (5) EDGE (1) Edge Computing (1) Ericsson (2) FTTH (6) GSLB (1) GiGAtopia (2) Gigabit Internet (19) Google (7) Google Global Cache (3) HLS (5) HSDPA (2) HTTP Adaptive Streaming (5) Handover (1) Huawei (1) IEEE 802.1 (1) IP Routing (7) IPTV (21) IoST (3) IoT (56) KT (43) Korea (20) Korea ICT Market (1) Korea ICT Service (13) Korea ICT Vendor (1) LG U+ (18) LSC (1) LTE (78) LTE-A (16) LTE-B (1) LTE-H (2) LTE-M (3) LTE-U (4) LoRa (7) MEC (4) MPLS (2) MPTCP (3) MWC 2015 (8) NB-IoT (6) Netflix (2) Network Protocol (21) Network Slice (1) Network Slicing (4) New Radio (9) Nokia (1) OSPF (2) OTT (3) PCRF (1) Platform (2) Private 5G (10) QoS (3) RCS (4) Roaming (1) SD-WAN (17) SDN/NFV (71) SIM (1) SK Broadband (2) SK Telecom (35) Samsung (5) Security (16) Self-Driving (1) Small Cell (2) Spectrum Sharing (2) Switching (6) TAU (2) UHD (5) VR (2) Video Streaming (12) VoLTE (8) VoWiFi (2) Wi-Fi (31) YouTube (6) blockchain (1) eICIC (1) eMBMS (1) iBeacon (1) security (1) telecoin (1) uCPE (2)
Password confirmation
Please enter your registered comment password.