25.331 3GPP PDF
ETSI TS V (). 1. 3GPP TS version Release Reference. RTS/TSGRvd Keywords. UMTS. Descriptor and Table of Contents (1 of 40) for 3GPP TS – Radio Resource Control (RRC) – Protocol specification. 3GPP TS V (). 2. Release Keywords. UMTS, radio. 3GPP. Postal address. 3GPP support office address. Route des Lucioles.
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Message Formation and ASN.
www.3gpp.org – /ftp/Specs/archive/25_series/25.331/
There are a maximum of 16 available signatures. Views Read Edit View history. OSI model by layer 7. RACH transmissions from the user consists of two parts: The transitions to lower energy consuming states occur when inactivity timers trigger. The set of available signatures is indicated by the SIB5 message, and the UE uses the 3gpp to determine the subset of that set and access slot to use.
The control part consists of 8 known pilot bits to support channel estimation for coherent detection and 2 TFCI bits. A 10 ms message part consists of one message part radio frame, while a 20 ms message part consists of two consecutive 10 ms message part radio frames.
Type 12 — Measurement control information for connected mode, if different from SIB The RRC idle mode no connection has the lowest energy consumption. Each slot consists of two parts, a data part to which the 3fpp transport channel is mapped and a control part that carries Layer 1 control information.
Radio Resource Control – Wikipedia
3bpp pilot bit pattern is described in table 8. The preamble is retransmitted in the next available access slot. The downlink power level is measured and the initial RACH power level is set with the proper margin due to the open-loop inaccuracy.
Type 13 — ANSI system information. In this case, the scrambling code is thus not necessarily applied aligned with the frame boundary of the physical channel to be scrambled. Download in other formats: The channel bits are interleaved, split into 2 bit radio frames and interleaved again. These chips are formed 33gpp QPSK symbols and prepared for transmission with the root-raised-cosine channel filter. The channel format and other details are outline in 3GPP Different operators have different configurations for the inactivity timers, which leads to differences in energy consumption.
The TFCI of a radio frame indicates the transport format of the RACH transport channel mapped to the simultaneously transmitted message part radio frame. The UE can start the random-access transmission at the beginning of a number of well-defined time intervals, denoted access slots. List of mobile phone generations.
Type 14 — PHY information. Does that mean the whole message is optional?
Radio Transmission These chips are formed into QPSK symbols and prepared for transmission with the root-raised-cosine channel filter. The major functions of the RRC protocol include connection establishment and release functions, broadcast of system information, radio bearer establishment, reconfiguration and release, RRC connection mobility procedures, paging notification and release and outer loop power control.
This symbol sequence is divided into 15 slots of symbols each. A 1 ms RACH preamble is sent with the selected signature. Type 3 — Cell identity and reselect information, similar to GSM cell selection parameters Type 4 — Cell reselect parameters for connected mode, if different from those in SIB3. The standard channel model includes rate-matching, but the sizes line up already, so rate-matching is a no-op. There are 15 access slots per two frames and they are spaced chips apart over 2 UMTS frames.
All of the parameters are powers of 2, but the repeat periods can be set independently for each SIB type. This corresponds to a spreading factor of for the message control part.
The RACH procedures is as follows: As per 3GPP The sequence of complex valued chips shall be scrambled complex chip-wise multiplication by a complex-valued scrambling code Sdl,n. That information is very useful for understanding the actual meanings of some of the elements they contain. You can get a “clean” copy of that ASN. In case of other downlink channels, the scrambling code shall be applied aligned with the scrambling code applied to the P-CCPCH.
Type 15 — GPS aiding information. The purpose of this procedure is to establish the appropriate uplink power level for the UE, since CDMA is exquisitely 25.3311 to variations in relative received power. The same scrambling code is used for the message part, but with a code offset.
The data and control parts are transmitted in parallel. The simplest way to schedule the messages would be: