Tracking Area Update and Paging in 5G Networks: a Survey of Problems and Solutions

Alsaeedy, Alaa A. R.; Chong, Edwin K. P.

doi:10.1007/s11036-018-1160-6

Cited by 27 publications

(25 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In LTE, the states of the UE connection with the corresponding serving eNB (ie, radio‐access network) are described by what are called the Radio Resources Control (RRC) states, used to identify whether there is a connection established between the UE and its serving eNB—the latter is the control node for the RRC states, unlike the ECM states where the MME is the control node. For that purpose, there are two RRC states: 1RRC‐CONNECTED: A UE enters this state when an RRC context is established (there are active signaling messages transferred between the UE and the eNB).…”

Section: Mme In Ltementioning

confidence: 99%

“…In some cases, the current LTE‐based SDNV schemes might be used for 5G use cases but need some modifications to match the new design of 5G systems. To the best of our knowledge, however, the ongoing 5G solution schemes in the literature (in terms of TAU and Paging management) are still limited (see Alsaeedy and Chong for more detail).…”

Section: Sdn and Virtualization‐based MM Techniquesmentioning

confidence: 99%

“…Specifically, based on the legacy LTE architecture and 3GPP specification for new 5G systems, the latter are designed based on Network Function (NF) instead of Network Entity (NE) as in LTE (for more detail on 5G NFs, see the 3GPP technical specification). Unlike the LTE MME, LM in 5G comprises two separate NFs designed to replace the legacy design of LTE MME, called Access Mobility Function (AMF) and Session Management Function (SMF) . In other words, LM in 5G is split into two different NFs (AMF and SMF).…”

Section: Lm Challenges In 5g Networkmentioning

confidence: 99%

“…For example (as mentioned earlier in Section ), the LTE MME is responsible for all the corresponding MM (ie, all control‐plane functions), including TAU and Paging procedures, and it suffers from the heavy loads that mostly come from the high‐mobility UE signaling. So the 5G design aims to separate the control‐plane functions—this is to support many services in a flexible and distributed manner and to guarantee that each control‐plane resource can be scaled independently . In particular, the AMF is to provide functions such as access authentication, authorization, and MM control, while the SMF is to provide functions such as session management and IP address allocations to UEs.…”

Section: Lm Challenges In 5g Networkmentioning

confidence: 99%

“…This is to help researchers to retune/reuse a particular solution scheme toward 5G. For more detail about MM issues in 5G specifically (in terms of TAU and Paging issues), see Alsaeedy and Chong This paper uniquely emphasizes the problem of battery power consumption in mobile UEs (most UEs are battery limited, including Internet‐of‐Things [IoT] devices).…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

A review of mobility management entity in LTE networks: Power consumption and signaling overhead

Alsaeedy

Chong

2019

Int J Network Mgmt

Self Cite

View full text Add to dashboard Cite

Mobility management (MM) in Long-Term Evolution (LTE) networks is a vital process to keep an individual User Equipment (UE) connected while moving within the network coverage area. MM Entity (MME) is the LTE component responsible for tracking and paging procedures and controlling the corresponding signaling between the UE and its serving cell, which is necessary for data-packet exchange. Because of the massive increase in the density of mobile UEs, MME is burdened by the high volume signaling load, especially because most of that load comes from Tracking Area Update (TAU) and Paging messages, which are essential to exchange UE-specific information with the network. To achieve cost-efficient resource provisioning, many solutions have been proposed for TAU and Paging management to optimize not only UE experience (ie, battery power consumption) but also network resources (ie, bandwidth). In this paper, we discuss various solution schemes for TAU and Paging in terms of complexity, latency, and computation costs. Also, this review discusses the adverse effects of these solutions on the LTE Key Performance Indicators (KPIs). Furthermore, we present a new trend of MM solutions in LTE networks, called software-defined network (SDN) and software-defined virtualization (SDNV).To this end, we examine the existing schemes and challenges in the literature toward next-generation wireless networks (eg, 5G, Internet-of-Things [IoT], and machine to machine [M2M] communications), and we describe user mobility models that are used to analyze the network performance.Int J Network Mgmt. 2020;30:e2088.wileyonlinelibrary.com/journal/nem market in the United States reveals that most signaling loads on the MME are caused by TAU and Paging procedures, as shown in Figure 2; cost about 34% of the total signaling load on the MME. 3 Generally, LNOs use many LTE Key Performance Indicators (KPIs) measurements, as primary indicators, to evaluate and measure the network performance to satisfy the end-user requirements according to Service Level Agreement (SLA). 12 Basically, the Paging Success Rate and TAU Success Rate are defined as the two LTE KPIs that measure how well the TAU and Paging procedures are succeeded. 13,14 Having low KPI values of Paging Success Rate and TAU Success Rate can be caused by low UE and/or network performances. Many researchers and practitioners try to mitigate the overall signaling loads on the MME by improving both the TAU and Paging procedures and the end-user experience to maintain the related KPIs at optimal values.

show abstract

Section: Mme In Ltementioning

confidence: 99%

Section: Sdn and Virtualization‐based MM Techniquesmentioning

confidence: 99%

Section: Lm Challenges In 5g Networkmentioning

confidence: 99%

Section: Lm Challenges In 5g Networkmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations