Review of perspectives and standards on IMT-2020

Review of perspectives and standards on IMT-2020

1. Survey of Whitepapers

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  International Organizations: NGMN, GSMA
  
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  Regional Organizations: Horizon 2020, NetWorld2020, RAS Future Networks Cluster, 4G Americas
  
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  Local Organizations: ARIB, Future Mobile Communication Forum of China, IMT-2020 Promotion Group, Huawei, ZTE, Nokia, Qualcomm, Ericsson, Samsung, NTT DoCoMo, Datang Telecom Technology & Industry Group
  

Type	Name	Views
International	NGMN	Definition: No formal definition General Requirement Description: Ability to enhance user experience and to provide differentiated and/or guaranteed QoS. Parameters: User experienced data rate, latency, mobility, connection density, traffic density, coverage, signalling efficiency Performance Objectives: 1Gb/s, 1~10ms, 500km/hr, 250k/km2, 100Gbps/km2, none, none
	GSMA	Definition: No formal definition General Requirement Description: Ability to maintain customer experience at peak data and to enhance quality of data roaming. Parameters: Data rate, latency, bandwidth per unit area, number of connections, perception of availability, perception of coverage Performance Objectives: 1-10Gbps, <1ms, 1000x LTE, 10-100x LTE, 99.999%, 100%
Regional	Horizon 2020	Definition: No formal definition General Requirement Description: Ability to provide differentiated and/or guaranteed QoS. Parameters: Throughput, handover reliability, call drop rate, data access and discovery, signalling and traffic overhead Performance Objectives: None
	NetWorld2020	Definition (QoE): The degree of delight or annoyance of the user of an application or service. General Requirement Description: Ability to optimize user QoE experience and to provide differentiated and/or guaranteed QoS. Parameters: Bandwidth, delay, jitter Performance Objectives: None
	RAS Future Networks Cluster	Definition: No formal definition General Requirement Description: Ability to provide differentiated and/or guaranteed QoS. Parameters: Data rates, delay Performance Objectives: 1000x LTE (100Gb/s per site), none
	4G Americas	Definition: No formal definition General Requirement Description: Ability to deliver the best QoS Parameters: Data rate, latency, mobility, capacity, coverage Performance Objectives: 100x, 5x~10x reduction, none, none, none
Local	ARIB	Definition: No formal definition General Requirement Description: Ability to maximize user perception with limited network resources. Parameters: Peak data rate, capacity density, number of connected devices/cell, latency, mobility, reliability Performance Objectives: >10Gbps, 1,000x IMT-Advanced, >10,000/cell, <1ms, >500km/hr, 90%~99.999%
	Future Mobile Communication Forum of China	Definition: No formal definition General Requirement Description: Ability to provide consistent user QoE. Parameters: Peak data rate, guaranteed user data rate, connection density, traffic density, latency, mobility Performance Objectives: >10Gbps, >100Mbps, >1M/km2, >10Tbps/km2, <1ms (radio) <10ms (E2E), up to 500km/hr
	IMT-2020 Promotion Group	Definition: No formal definition General Requirement Description: Ability to provide gigabit user experienced data rate and to satisfy QoS requirements of different application scenarios Parameters: User experienced data rate, peak data rate, traffic density, connection density, latency, reliability Performance Objectives: 100Mbps~1Gbps, >10Gbps, .10Tbps/km2, 1M/km2, <1ms, 100%
	Huawei	Definition: No formal definition General Requirement Description: Ability to resolve complex and different performance requirements by wide range of mobile services. Parameters: Latency, simultaneous connections, data rate, switching time Performance Objectives: <1ms, hundreds of billions of machines, 1Gb/s~10Gb/s, <10ms
	ZTE	Definition: No formal definition General Requirement Description: Ability to provide consistent on-demand access to services and to provide differentiated QoS. Parameters: Capacity, peak data rate, latency, accuracy Performance Objectives: None
	Nokia	Definition: No formal definition General Requirement Description: Ability to provide a virtual zero latency gigabit experience Parameters: Capacity, latency, user data rates, coverage Performance Objectives: 10,000x than LTE, <1ms, >10Gb/s, none
	Qualcomm	Definition: No formal definition General Requirement Description: Ability to enhance user experience and to provide differentiated and/or guaranteed QoS. Parameters: Latency, reliability, coverage Performance Objectives: None
	Ericsson	Definition: No formal definition General Requirement Description: Ability to deliver high-quality connectivity with very high availability. Parameters: Capacity, data rate, latency, reliability, availability Performance Objectives: None
	Samsung	Definition: No formal definition General Requirement Description: Ability to deliver uniform end-to-end experience regardless of user-location. Parameters: Latency, peak data rate, cell edge data rate, mobility, simultaneous connections Performance Objectives: <1ms, >10Gbps, >1Gbps, >500km/hr, >1M/km2
	NTT DoCoMo	Definition: No formal definition General Requirement Description: Ability to provide more uniform user QoE than LTE Parameters: Capacity, RAN latency, user throughput Performance Objectives: 1000x compared to LTE, <1ms, 1Gbps everywhere
	Datang Telecom	Definition: No formal definition General Requirement Description: Ability to provide reliable performance. Parameters: Peak data rate, latency, user throughput, throughput/km2, connections/km2, mobility Performance Objectives: 10Gbps, <1ms, >10Mbps, >100Gbps/km2, >1M/km2, 1,200 km/hr

While most of the organizations agree that IMT-2020 network should provide both consistent user experience and differentiated/guaranteed QoS, the organizations differ in the specific aspects of network to be managed and therefore have different definitions of QoS. For example, some emphasize user experienced data rate and suggest monitoring of the parameter along with peak data rate. Nevertheless, some parameters (e.g., latency and mobility) are commonly proposed by the organizations and they may be able to provide a common ground for end-to-end QoS framework.

An important issue is that the views on IMT-2020 mostly focus on the Quality of Experience/Service at RAN (Radio Access Network), and seldom do organizations take into account end-to-end QoS (including RAN & Fixed Network). It is true that organizations such as Samsung and NGMN have acknowledged the importance of end-to-end latency in 5G network. However, most of the organizations suggest monitoring of user plane latency instead, and it is difficult to provide consistent QoS in this perspective.

2. 
   
   Directory: ITU-T -> focusgroups
   focusgroups -> International Telecommunication Union
   focusgroups -> Innovation of ict in Developing Countries
   focusgroups -> International Telecommunication Union
   focusgroups -> Telecommunication
   focusgroups -> Focus Group on Smart Grid
   focusgroups -> Telecommunication
   focusgroups -> Telecommunication
   focusgroups -> Telecommunication
   focusgroups -> Innovation of ict in Developing Countries
   focusgroups -> Innovation of ict in Developing Countries
   
   
   
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