name: SAR
full_form: Segmentation And Re-assembly
context: New sec. in V2.0.1 according to Tdoc TSGR1#7(99)c00: 4.3.4 Coding and Interleaving of power control ratio (PCR) for slow transmit power control When slow transmit power control is used, there are two (encoded) TPC bits in every slot of the radio frame. One PCR is sent in a radio frame, i.e. 30 TPC bits are used. The PCR is firstly encoded using biorthogonal (32, 6) code. The mapping of PCR to the biorthogonal code words, C32,m and , is defined in TS 25.214. The biorthogonal code words are generated in the same way as OVSF codes of level 32 defined in document TS 25.213. The biorthogonal code words are secondly encoded into PCR code words of 30 bits by puncturing the two least significant bits. Channel interleaving is not applied for the encoded bits, and the bits of the PCR code words are directly mapped to the slots of radio frames so that more significant bit is transmitted before the less significant bit within a radio frame.
description: Segmentation And Re-assembly (SAR) is a mechanism related to network configuration and power management in specific band combinations for FDD+TDD EN-DC. It involves signaling design and has implications on RAN2 specifications, aiming to facilitate compliance with SAR limits without explicit 3GPP specification impact.
explanation: The context describes SAR as a technical mechanism within the realm of 3GPP specifications, focusing on network configuration, power management, and signaling for specific band combinations. This clearly places it under the Technology category as it deals with standards and methodologies used in telecommunications.
section_title: 9	Summary
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