Development planning and technical requirements of 4G/5G broadcasting system

Release time:

2021-06-24

3GPP gradually introduced the first version of the multimedia technology broadcast program/multicast service project (MBMS) from Release 9, and evolved into an enhanced multimedia technology broadcast program/multicast service project (eMBMS) with faster transmission and more flexible business process configuration in Release 11. Its improvement at the business process level is mainly manifested in improving video coding and frame counts towards higher pixels; The forward correction (FEC) technology has also been newly introduced.
However, the industrial development and commercialization process of eMBMS around the world is very slow. As of March 2018, only five operators worldwide have released some small-scale eMBMS business service projects.
In the frozen and cleaned 3GPP Release 14 in 2017, 3GPP made some improvements/evolutions to eMBMS (such as expanding the OFDM labeled circulatory system as a prefix length). "Don't underestimate this type of improvement, as it is spontaneously promoted by operators, representing intense demands from operators, and indicating that the process of industrial development and commercialization after eMBMS may accelerate.". This is not true. It has only been a few months since it was frozen and cleaned. At this stage, the industrial community in the European region has already gradually started experimenting with this evolving type of eMBMS, and has also referred to it as "FeMBMS" (future eMBMS) or even "4G/5G radio and television".
At the same time, the technical nature of traditional broadcast programs towards mobile intelligent terminals is also continuing to develop. DVB-T2, the second generation road data information broadcasting and television specification in Europe, explicitly proposes a new technology application that can improve the frequency band utilization (bps/Hz) of wireless networks - Time Length Slice (TFS), and thoroughly applies it to mobile video broadcasting systems (DVB-NGH) towards next-generation handheld terminals. In addition, the new generation of road data information broadcasting and television specification ATSC3.0 in the United States will adopt layered reuse (LDM) technology, which is also known as "cloud broadcasting program" in the industry. It divides a single physical layer wireless channel into several sub wireless channels, each of which has different channel coding and allocation Business processes with different load bearing such as signal strength (such technical core concepts are similar to "network slicing" for 4G/5G wireless network transmission networks).
However, compared to 4G and other types of communication systems (including road broadcast television system software), the total output of mobile traffic on the 4G/5G Internet and the method of mobile terminal devices will be significantly different. It can be expected that in the 4G/5G era, the deployment of a larger number of mobile users, improved working capabilities of terminal devices, and higher capacity Internet will lead to significant trials in the exploration and application of new technologies in the industry at this stage.
Despite the trials described above, the development plan for the "4G/5G broadcasting system" is well established: one is that the 4G/5G Internet should be able to provide a new broadcast/unicast hybrid business process; The second is to make traditional radio program methods more interactive.
Guided by the above stated goals, in summary, at this stage, the mobile communication technology industry around the world has clearly proposed four major requirements for 4G/5G broadcast programs: (1) higher quality audio and video and more efficient source coding, such as immersive experience audio, 4K/8K ultra high definition television, and multi frequency/multi angle viewing system software; (2) Towards ubiquitous content broadcast programs such as fixed fixed terminal devices located in the natural environment of the home, smartphones and tablets located in the mobile natural environment; (3) Higher data information volume and higher relative density transmission, such as non hierarchical reuse (SLDM); (4) Quickly move the terminal device in the scenario to be mobile.

Test Preparation of Multimedia Conference System

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