name: IMS
full_form: IP Multimedia Subsystem
context: PICH today carries a number of PIs mapped to 288 bits out of the 300 bits available on the SF256, 10 ms radio frame, see Figure 1 in [6]. This leaves 12 bits unused, which are today DTXed. Potentially these 12 bits could be used to instruct the new UEs about the transport format used on the PCH. E.g., setting all the 12 bits to +1 could mean âuse the special small TF (TF=1x80)â, while all 12 bits set to -1 could mean âuse the normal TF as defined in system information (TF=1x240)â. ON/OFF keying could also be used, where DTX means âuse the normal TF as defined in system information (TF=1x240)â and setting all the 12 bits to +1 could mean âuse the special small TF (TF=1x80)â. It needs to be further discussed if the complexity of introducing new signaling on the 12 free bits on the PICH can be motivated. Maybe the cost of doing an occasional blind detection of an additional transport format is not too high. If a new smaller transport block size is introduced, further discussions are
description: The IP Multimedia Subsystem (IMS) is a crucial component in the development of multimedia-based 3G networks, enabling the deployment of IP-based multimedia services. It supports various real-time and non-real-time services such as voice, video streaming, audio streaming, instant messaging, chat, web browsing, and gaming. IMS requires specific Radio Access Bearers (RABs) to support these services, including Conversational PS RABs for Voice & Video Services, Streaming PS RABs for PS Streaming Services, Interactive/Background PS RABs for Data Services, and Signalling RABs for SIP.
explanation: IMS is classified as a Service because it focuses on providing a range of multimedia functionalities to users in 3G networks. The text emphasizes its role in delivering services like voice, video, messaging, and data access, which are core characteristics of telecommunications services.
section_title: 4.1	General
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biotag_Description: O,B-Network,I-Network,I-Network,O,O,O,O,O,O,O,O,O,O,B-Technology,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Network,O,O,O,O,O,O,O,O,O,O,O,O,B-Mode,O,O,O,O,O,O,O,B-Mode,O,O,B-Mode,O,O,O,B-Mode,O,O,O,O,O,O,O,O,O