name: RNSAP
full_form: Radio Network Subsystem Application Part
context: one MAC-ehs header and one or more reordering PDUs. Each reordering PDU consists of one or more reordering SDUs belonging to the same priority queue. All reordering SDUs belonging to the same priority queue in one TTI shall be mapped to the same reordering PDU. Each reordering SDU equals a complete MAC-ehs SDU or a segment of a MAC-ehs SDU. Each MAC-ehs SDU equals a MAC-d PDU or a MAC-c PDU (FDD and 1.28 Mcps TDD only). The LCH-ID and L fields are repeated per reordering SDU. The TSN and SI fields are repeated per reordering PDU. In 1.28 Mcps TDD multi-frequency HS-DSCH cell, TSN can be extended to 9bit as indicated by RRC signalling. When TSN is extended to 9bit, the 3 least significant bits are placed after the last reordering PDU. If several TSNs is included in MAC-ehs header, the extented bits of TSN should be concatenated in the same order as that of the TSN occurrrence in the MAC-ehs header. For FDD, the size of the TSN field is configurable by upper layers [7]. The presence of
description: The Radio Network Subsystem Application Part (RNSAP) is a protocol responsible for providing signalling information across the Iur interface, enabling communication between Radio Network Controllers (RNCs) and Base Station Systems (BSS) in UMTS networks. It is divided into four modules: Basic Mobility Procedures, Dedicated Procedures, Common Transport Channel Procedures, and Global Procedures.
explanation: The context explicitly states that RNSAP is a protocol used for signalling between network elements in UMTS networks. This aligns with the definition of a Protocol entity type.
section_title: 6.2.1	RNSAP Protocol
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biotag_Description: O,B-Protocol,I-Protocol,I-Protocol,I-Protocol,I-Protocol,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Network,O,O,O,B-Network Function,I-Network Function,O,O,O,B-Technology,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Connection,O,O,O,O