- Radio Frame Structure. - One radio frame consist of 38400 chips and 15 slots. - The duration of the radio frame is 10ms which have ship rate of 3.84 Mcps. - Each slots in the radio frame comprises of 2650. - timeslot #0 timeslot #1 timeslot #2 timeslot #13 timeslot #14 Radio Frame (10ms). - Time Slot (2560*T c. - In uplink and downlink direction, each slot in a radio frame is defined with a code or a set of codes that carries a set of common and. - dedicated channels called Physical Channel.. - Physical channel are defined by specific carrier freq, scrambling and channelization code. - Physical Channel. - Broadcast Control Channel (BCCH):. - It broadcast system control information for all mobiles in a cell like Code values in the cell, neighbors information, allowed power levels in downlink direction.. - Paging Control Channel (PCCH):. - Common Control Channel (CCCH):. - Network may have certain tasks which are or may be common to UE in the cell. - Dedicated Control Channel (DCCH). - It is used transfer the user data between the network and the UE in both uplink and downlink directions.. - It is used to transfer the data from one point to all mobiles or a specified group of mobiles.. - It is the channel used to send dedicated control and user data between UE and the network in both uplink &. - It is a enhanced uplink transport channel.. - It is used to send a control information from UE in the uplink direction. - It is a downlink common channel used to send small amounts of control and user data.. - It is common channel used to send dedicated control and user data.. - It broadcast system information in the downlink direction for all mobile stations in a cell.. - It’s a downlink common channel used to send paging notification messages.. - It is a channel that is used to send dedicated control and user data between the UE and the network in both directions.. - Dedicated Physical Data Channel (DPDCH) Dedicated Physical Control Channel (DPCCH) Common Channels:. - Dedicated Physical Control Channel. - Pilot bits (used to support channel estimation at rake receiver). - Pilot N pilot bits. - T slot = 2560 chips, 10 bits. - 1 radio frame: T f = 10 ms DPDCH. - T slot = 2560 chips, N data = 10*2 k bits (k=0..6). - Slot #2 Slot #3. - Dedicated Physical Data Channel. - Physical Random Access Channel (PRACH). - 10 ms (one radio frame). - The 10 ms message part spilt into 15 slots each length of 2560 ships. - T slot = 2560 chips, 10*2 k bits (k=0..3). - Message part radio frame T RACH = 10 ms Data. - The length of frame is 10 ms divided into 15 slots. - of bits in the data part depends on the spreading factor between 512 and 4 correspondence of 15kbps to 1,920kbps.. - One radio frame, T f = 10 ms TPC. - T slot = 2560 chips, 10*2 k bits (k=0..7) Data2 N data2 bits. - It has pre-defined bit sequence transmitted with a bit rate of 30 Kbps (Fixed Scrambling code 256). - Reason for low bit rate as it is transmitted with high power to reduce the interference. - It is phase reference, must be transmitted in whole cell. - 1 radio frame: T f = 10 ms. - It has following characteristics:. - •An arbitrary channelization code is used SF256. - •A S-CPICH transmitted over the entire cell or part of the cell. - Primary Common Control Physical Channel (P-CCPCH). - It has fixed bit rate of 30 Kbps (Fixed Scrambling code 256). - There are no TPC, Pilot bits and first 256 chips of the slot are used for the primary and secondary synchronization Channel. - This used to carry the FACH and the PCH.. - 1 radio frame: T f = 10 ms (Tx OFF). - Secondary Common Control Physical Channel (S-CCPCH). - It is transmitted only to smaller are of the cell.. - T slot = 2560 chips, 20*2 k bits (k=0..6). - 1 radio frame: T f = 10 ms TFCI. - This channel used in the cell search procedure. - It is divided into the Primary Synchronization and Secondary Synchronization Channel. - It carries primary synchronization codes transmitted in each slot of a radio frame. - It is same for cells in the network.. - It consist of the secondary Synchronization codes (SSC). - One 10 ms SCH radio frame ac s i,0. - It is used for data transmission by one or-several simultaneous users in the downlink direction.. - The collision Detection Assignment Indicator Channel is used in the CPCH Access Procedure. - This is uses the free spaces that occurs in the AICH. - It is used to inform the UE about CPCH existence and configuration. - It is used in a random access procedure by the network to indicate that the RACH preamble was detected.. - •The data can be sent through logical layer via different channels in the transport layer.. - •These selection of channels in the transport and physical layer depends on the data itself and radio resource management and its parameters.. - Dedicated Physical Data Channel (DPDCH) Dedicated Physical Control Channel (DPCCH) Fractional Dedicated Physical Channel (F-DPCH). - E-DCH Dedicated Physical Data Channel (E-DPDCH) E-DCH Dedicated Physical Control Channel (E-. - Primary Common Control Physical Channel (P- CCPCH). - Secondary Common Control Physical Channel (S- CCPCH). - HS-DSCH-related Shared Control Channel (HS- SCCH). - Dedicated Physical Control Channel (uplink) for HS-. - Burst Types – Dedicated Physical Channel. - of data symbol depends on SF or burst type.. - Spreading factor. - (SF) Burst Type 1 Burst Type 2 Burst Type 3 Burst Type 4. - Burst Type - I. - This burst type used for both Uplink and Downlink. - 0-975 976 Cf table 1 Data symbols. - Cf table 1 Data symbols. - Data symbols. - 512 chips Data symbols 976 chips. - Burst Type - II. - cf table 1 Data symbols. - Data symbols 1104 chips. - Burst Type - III. - This burst type used for Uplink only. - Data symbols 880 chips. - Burst Type - IV. - This burst type used for downlink MBSFN. - Data symbols 1056 chips. - TPC Transmission of TPC burst is done in the data parts of traffic burst.. - Data symbols Midamble Data symbols GP. - Transmission of TFCI is done in the data parts of the respective physical channel.
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