Fully packet-oriented mobile broadband network providing: – Peak data rates of 100 Mbps (DL) and 50 Mbps (UL) – Very low latency – Seamless and lossless handover – Sophisticated QoS to support important real time applications such as voice, video and interactive gaming – Support for terminal speeds of 150-500 Km/h and cell ranges of … Read more
Here I write about what is main work of Acquisition Indicator Channel AICH in 3G There is 2 types main work of AICH Carrying the Acquisition Indicators (AI), SF = 256 There are 16 kinds of Signature to generate AI The Acquisition Indicator Channel (AICH) is a common downlink channel used to control the uplink … Read more
Here I write about PRACH Message Structure and PRACH Access Timeslot Structure for WCDMA 3G with its Flow in Image. The data and control bits of the message part are processed in parallel. The SF of the data part can be 32, 64, 128 or 256 while the SF of the control part is always … Read more
Main work of Primary Common Control Physical Channel PCCPCH in 3G wcdma as below. Carrying BCH transport channel Fixed rate, fixed OVSF code (30kbps，Cch, 256, 1) The PCCPCH is not transmitted during the first 256 chips of each time slot The Primary Common Control Physical Channel (P-CCPCH) is a fixed rate (SF=256) downlink physical channel … Read more
Here I write down one basic idea of Spectrum reframing in LTE and why operators require spectrum reframing for LTE. Operators worldwide are looking forward to new LTE technologies deployment but not every one of them possess brand new spectrum required for LTE deployment. As a result, many networks are expected to perform some level … Read more
Here I write on 3GPP Services Classification and EUTRAN Capacity Limiting Factors for LTE. 3GPP Services Classification Being a data centric technology, LTE has well defined classifications for Quality of Service. In general, there are two main classes of service type, with Guaranteed Bit rate vs with Non Guaranteed Bit rate. RT (Real Time) services … Read more
Margin sites intrusive noise levels due to an increase can be considered as If sites were spaced closer together than position using the same frequency The thermal noise floor. In other words, the system is interference limited as Opposed to limit noise. Often a site link budget maximum range is used to evaluate the process. … Read more
After completion of the design, installation takes place. For aesthetic reasons, the components of a closed system is often deliberately hidden. As a result, after installation, it is difficult to confirm or check them in full. Skill during installation, therefore, very important, because troubleshooting defective components is difficult. Perform a complete examination and sample testing … Read more