• Title/Summary/Keyword: MBMS

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Trends of Terrestrial Broadcasting Technology Based on MBMS (MBMS 기반 지상파 방송 기술 동향)

  • Ahn, S.K.;Jung, H.;Kwon, S.;Hur, N.;Choi, D.J.;Park, S.I.
    • Electronics and Telecommunications Trends
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    • v.36 no.4
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    • pp.72-80
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    • 2021
  • Multimedia broadcast multicast services (MBMS) have evolved to accommodate broadcasting services in 3GPP standards. One long-standing approach is to comprise the multimedia broadcast multicast service single-frequency network based on the cellular networks of mobile operators, and another approach adds a broadcasting network to 3GPP standards. In this paper, we overview the MBMS architecture and key entities in MBMS services. In addition, the trends of MBMS are discussed in terms of technology and 3GPP standards, where MBMS functionality is described according to 3GPP releases. Finally, we discuss its capability through a comparison with ATSC 3.0, which is the latest terrestrial broadcasting standard, and then we present the current status and future perspectives of MBMS in 3GPP.

Performance Analysis of MBMS and Wi-Fi Priority Policy in Heterogeneous Networks having a dispersed Single-cell MBMS (분산된 단일 셀 MBMS을 지원하는 이종 네트워크 환경에서 MBMS와 와이파이 사용자 우선 정책에 대한 성능 분석)

  • Jeong, Un Ho;Lee, Jung Moon;Kim, Gi Taek;Nam, Boo Hee;Kim, Dong Hoi
    • Journal of Broadcast Engineering
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    • v.18 no.2
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    • pp.215-224
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    • 2013
  • With the rising popularity of smart-phones, the supply of Internet protocol television is largely increased and it causes the wireless communication network load to be increased. To overcome such an overloading problem, 3GPP is now working on the standardization of MBMS since LTE Release 6 specification. MBMS has good performance in bandwidth efficiency by sharing the same bandwidth with the mulitple MBMS users having the same content. According to the proposed algorithm, in heterogeneous networks having a dispersed Single-cell MBMS where 3GPP network and Wi-Fi network are mixed, if the number of MBMS users, who are belonging to cells supporting a dispersed Single-cell MBMS, is more than a specified threshold, the MBMS priority policy is operated. Otherwise, the Wi-Fi priority policy is executed. As the simulation results show both the increase of total available bandwidth ratio and the decrease of network usage cost, it is confirmed that the proposed scheme allows the network efficiency to be maximized.

Performance Evaluation of PBCH in LTE-Based 5G MBMS and 5G NR (LTE 기반 5G MBMS 와 5G NR 의 PBCH 성능 평가)

  • Ahn, Haesung;Kim, Hyeongseok;Cha, Eunyoung;Kim, Jeongchang;Park, Sung-Ik;Hur, Namho
    • Proceedings of the Korean Society of Broadcast Engineers Conference
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    • 2021.06a
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    • pp.260-263
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    • 2021
  • 3GPP (3rd generation partnership project)는 5G 요구 조건을 충족시키기 위해 release 16 에서 FeMBMS (further evolved MBMS)를 LTE 기반 5G MBMS 로 개선하였다. 이어서, 현재 개발 중인 release 17 에서 NR 기반의 디지털 방송을 위한 NR MBS (multimedia broadcast services)가 논의되고 있다. 본 논문에서는 LTE (long term evolution) 기반 5G MBMS (fifth generation multimedia broadcast & multicast services)와 5G NR (fifth generation new radio)의 PBCH (physical broadcast channel) 에 대한 송수신기 구조를 설명하고, 성능을 평가한다. 본 논문에서는 가산 백색 가우시안 잡음(additive white Gaussian noise: AWGN) 및 고정 환경 하에서 LTE 기반 5G MBMS 와 5G NR 에 대한 PBCH 의 성능을 비교한다.

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Analysis of Capacity Efficiency of Broadcasting Service in LTE Network (LTE 네트워크에서 방송서비스의 용량 효율성 분석)

  • Ban, Tae Won;Jung, Bang Chul;Sung, Kil-Young
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.16 no.12
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    • pp.2614-2618
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    • 2012
  • Recently, multimedia broadcasting traffic is explosively increasing since the performance of smartphones is significantly enhanced and capacity of mobile access network such as LTE is steeply increasing. We can accommodate the multimedia broadcasting traffic via general unicast scheme or eMBMS which is a broadcast-specific scheme. First, the unicast scheme provides higher spectral efficiency compared to the eMBMS. However, unfortunately, the efficiency of the unicast scheme dramatically decreases as the number of users increases. On the other hand, although the spectral efficiency of the eMBMS is lower than that of the unicast, it can serve many users with a channel. Thus, this paper defines and investigates the capacity efficiencies of the both schemes for multimedia broadcasting traffic. In addition, we derive the optimal number of users where the eMBMS can provide the higher capacity efficiency than that of the unicast scheme.

Evolved-MBMS: 3GPP LTE를 위한 Mobile IP TV 기술

  • Kim, Jun-Su;Mun, Seong-Ho
    • Information and Communications Magazine
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    • v.30 no.2
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    • pp.66-74
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    • 2013
  • 최근 3세대 이동통신 시스템 표준화 단체인 3GPP는 LTE-A 네크워크에서 모바일 IP TV 서비스를 제공하기 위한 Evolved-MBMS (eMBMS) 기술을 표준화하였다. 본고에서는 차세대 모바일 IP TV전송 기술의 핵심 표준이 될 eMBMS의 기술적 특징을 살펴보고 서비스 시나리오를 예상해본다.

Analysis for Channel Change Minimization Scheme of Mobile IPTV Service in LTE-Advanced Systems (LTE-Advanced 시스템에서 모바일 IPTV 서비스 채널 변경 최소화 방법에 대한 분석)

  • Lee, HyeungWoo;Jeong, Jongpil
    • The Journal of the Institute of Internet, Broadcasting and Communication
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    • v.15 no.2
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    • pp.77-85
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    • 2015
  • This paper presents our performance evaluation after the way of minimizing waiting times between channel switching for eMBMS(evolved Multimedia Broadcast/Multicast Services) technique in LTE-Advanced systems. Existing composition of MBMS using IGMP(Internet Group Management Protocol) transfers the data with Multicast from BM-SC(Broadcast Multicast Service Center) to eNB(evolevd Node B) and with Broadcast from eNB to UE(User Equipment). Therefore, in case of channel switching, IGMP Join report should be transferred to BM-SC and then wait user's contents to be retransferred from eNB. To achieve this, Subscriber Channel technique of priorities is used for minimizing waiting times between channel switching as UE broadcasts favorite channels in advance.

Utran Architecture for Multimedia Broadcast Multicast Service (MBMS)

  • Kumar Ashok
    • Journal of The Institute of Information and Telecommunication Facilities Engineering
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    • v.2 no.3
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    • pp.24-35
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    • 2003
  • With the arrival of 3rd generation cellular networks it is expected that a lot of new cellular services will be available to the mobile users like video calling, location based services etc. Similarly MBMS is one such service which is targeted for 3G mobile users for viewing talk shows, live sport events etc. One shall view this service like a small portable T.V being carried by the mobile user. The user watches the programs of his liking by joining if he wishes. In this paper we focus on the possible UTRAN architectures to provide MBMS service within UMIS networks. The paper primarily focuses on the requirement aspect, notification aspect and the mobility aspect. The paper lists many options for notifications and elaborates on them in terms of pros and cons. In the end the paper conclude with an UTRAN architecture for MBMS service which meets the requirements of this service as well as makes minimum changes to the existing UTRAN architecture while attempting to save terminal power for this service.

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Implementation plan of eMBMS in the case of LTE-R (철도통합무선망(LTE-R) 환경에서의 eMBMS 구현방안)

  • Park, Min-ju;Won, Hong-sun
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.22 no.6
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    • pp.903-909
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    • 2018
  • In December 2017, the world's first LTE-R for 250km/h high-speed railway was commercialized with the opening of Wonju-Gangneung high-speed railway. LTE-R has many advantages such as voice and video call, high-speed data transmission, coverage redundancy and DU redundancy. But it requires efficient use of radio resources because of a limited bandwidth of 10MHz for UL and DL, respectively. The existing unicast scheme has limited high frequency efficiency so when the number of users increases, service is limited due to the network load, which could be a problem for LTE-R in terms of stability and reliability. On the other hand, the multicast scheme via eMBMS can provide stable service even if the number of video users is high. This paper derives the number of unicast scheme users considering the LTE-R network with LAB test and calculation result, and proposes implementation plans and considerations for eMBMS commercialization on LTE-R.

Analysis on the 3GPP MBMS Security Mechanism (3GPP MBMS 보안 메커니즘 분석)

  • Park, Youn-Kyoung;Lim, Sun-Hee;Song, Dong-Ho;Jung, Young-Jun;Yi, Ok-Yeon;Lim, Jong-In
    • Proceedings of the Korean Information Science Society Conference
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    • 2007.10d
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    • pp.62-65
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    • 2007
  • 3GPP(3rd Generation Partnership Project) 주도의 유럽형 3세대 이동통신인 UMTS 시스템에서 제공하는 멀티미디어 방송 서비스(Multimedia Broadcast/Multicast Service)는 무선 네트워크상에서 동일한 정보를 하나의 링크를 통해 다수의 사용자에게 제공하는 point-to-multipoint 서비스이다. 콘텐츠가 무료로 제공되면 임의의 사용자들이 콘텐츠가 제공되는 채널에 액세스할 수 있다. 그러나 채널 액세스가 가입(subscription)기반이면, 가입하지 않은 사용자들은 콘텐츠를 이용할 수 없어야 한다. 이를 위해 사용자를 인증하고 안전한 방법으로 콘텐츠를 전송할 수 있는 보안 서비스가 필요하다. 본 논문은 MBMS의 전반적인 개요를 설명하여 앞으로 논의될 내용인 MBMS 보안구조에 대한 배경지식을 제공한다. 또한 브로드캐스트와 멀티캐스트 모드 각각에 대한 MBMS 구조를 설명하고, 멀티캐스트 모드에서의 보안 기능과 키관리 기법, 콘텐츠 보호 기술에 대해 상세히 분석한다.

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