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Initial LTE Network Design Options

While the goals and design targets specified above may be aggressive, options have been approved for consideration in the design that when used properly, will lead to a more efficient network compared to the existing 3G network. Therefore, in the quest to produce the best network possible in a cost-effective manner while meeting the goal … Read more

Quadrature Amplitude Modulation (QAM) in Wimax

QAM symbols are represented by the carrier signal being transmitted with specific phase (90°)/amplitude (dictated by the message), for finite periods of time. QAM constellations (patterns) 2 QAM (Binary PSK – BPSK) Two symbols are defined (1 amplitude; 2 phases) Every symbol transmitted over the transmission channel represents (carries) 1 message bit. Baud rate = … Read more

Role of the WiMAX Forum

WiMAX Forum Definition of conformance and interoperability profiles out of the huge amount of options in IEEE 802.16 Interoperability testing and conformance & interoperability certification Definition of conformance and interoperability profiles is still focussing on OFDM 256 More than 380 companies 384 companies (status Nov. 05 / WiMAX Forum) Equipment/System Suppliers, Components Suppliers and Operators … Read more

WMAN Standardization

Here I Write about WMAN Standardization Which is universally design and fixed for all Operator. Let’s Check in Detail. WMAN Standardization is inherited from 802.16 standard family CPE: Customer Premises Equipment AAS: Adaptive Antenna System OFDM: Orthogonal Frequency Division Multiplex QAM: Quadrature Amplitude Modulation BPSK: Binary Phase Shift Keying ETSI has defined two specifications, Hiper … Read more

High Speed Data Solutions for Wimax

Here i write about basic notes of How High Speed Data Solutions in wimax. These three diagrams compare various system parameters of WLAN (WIFI), WMAN (WiMAX) and the mobile network technologies UMTS with High speed Packed Downlink Access (HSPDA). The parameters have the following meaning: Spectral efficiency: is the exploitation of the radio frequencies Spectrum … Read more

Universal Broadband Wireless Access for Wimax

This picture shows complementary access solutions for different mobility and nomadic, or “fixed mobile“ needs Today for all kinds of applications the appropriate access technology exists The figure shows the typical access solutions for different mobility and nomadic needs For fixed network access DSL-based systems deliver broadband data rates depending only on the type of … Read more

LTE Layer 2 user plane protocol stack in detail

LTE Layer 2 user plane protocol stack in detail LTE user Layer 2 Protocol stack-the plan is composed of three substrates, as shown in the figure. Packet layer packet data convergence Protocol (PDCP) : this layer processes messages resource control (RRC) in the control plan and packages of Internet Protocol (IP) addresses in the user’s … Read more

Functions and Architecture of PDCP in LTE

PDCP layer performs the following functions: 1. Header compression and decompression plane of the user data; 2. Security features: encryption and deciphering the user plane and control plane data; the protection of the integrity and operation of the plane data; 3. Provide support functions: order to delivery and reorder PDU to the layer above a … Read more

Paging in Detail for LTE UE

To receive E-UTRAN pagination, UEs in idle mode for monitoring PDCCH for the channel value used to indicate the pagination RNTI: RNTI-P. The EU needs only to monitor the PDCCH channel at certain specific times (i.e. the subframes are specified for individual radio frames introduction to the framework structure of the LTE radio.). At other … Read more

Frequency or RAT Evaluation for LTE UE

E-UTRAN configures a priority for all applicable frequencies for each RAT. In addition to the priorities of specific cells that are optionally provided by SI, E-UTRAN can assign specific EU priorities through dedicated signaling. Since frequencies are indicated in the information system, the EU is expected to take into account only the cell reselection which … Read more