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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Type 13 — ANSI system information. The 25.331 power level is measured and the initial RACH power level is set with the proper margin due to the open-loop inaccuracy. Type 14 — PHY information.

Free Online 3GPP UMTS ASN.1 Messages Decoder

The channel bits are interleaved, split into 2 bit radio frames and interleaved again. All elements are optional.

Download in other formats: N-1 with a repeat period of 8N, where N is a power of 2. The transitions to lower energy consuming states occur when inactivity timers trigger. Each preamble is of length chips and consists of repetitions of a signature of length 16 chips. That information is very useful for understanding the actual meanings of some of the elements they contain.

The configuration of RRC inactivity timers in a W-CDMA network has considerable impact on the battery life of a phone when a packet data connection is open. Time and reference position appear to by mandatory. 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.


The best place to see this laid out in a clear way is in 3GPP RACH transmissions from the user consists of two parts: The channel format and other details are outline in 3GPP You can get a “clean” copy of that ASN.

UMTS ASN1 RRC description

The BCH transport block is always bits, including a header and data fields. Powered by Trac 0. This TTI length is configured by higher layers. The data and control parts are transmitted in parallel.

DecodingUMTS/RRC – rangepublic

Each slot consists of two parts, a data part to which the RACH transport channel is mapped and a control part that carries Layer 1 control information. There are 15 access slots per two frames and they are spaced 33gpp apart over 2 UMTS frames. This article is based on material taken from the Free On-line Dictionary of Computing prior to 1 November and incorporated under the “relicensing” terms of the GFDLversion 1. Different operators have different configurations for the inactivity timers, which leads to differences in energy consumption.

The control part consists of 8 known pilot bits to support channel estimation for coherent detection and 2 TFCI bits. There are a maximum of 16 available signatures. The UE selects the scrambling code number by adding the code number of the downlink primary scrambling code 3gp the preamble scrambling code number from SIB5.


Message encoding is ASN. OSI model by layer 7. The pilot bit pattern is described in table 8. The set of available signatures is indicated by the SIB5 message, and the UE uses the ASC to determine the subset of that set and access slot to use.

Type 18 — Neighbor identities. The purpose of this procedure is to establish the appropriate uplink power level for the UE, since CDMA is exquisitely sensitive to variations in relative received power.

25.31 The fact that SIBs can span multiple transport frames, or be combined into shared transport frames, further complicates the set of scheduling possibilities. 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. This corresponds to a spreading factor of, 64, and 32 respectively for the message data part.