The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Radio link failure (RLF) is a common phenomenon in all radio access technologies like GSM or UMTS or wireless-LAN etc., when the radio channel signal strength is weak to continue with the application. RLF is a local event detected by mobile handset (or user equipment-UE) immediately and network nodes come to know later. It is also difficult to recover for the UE due to low signal. Hence, RLF has to...
Femto-cells are currently being considered by several wireless operators as an attractive, scalable solution to improve coverage and user experience in residential and enterprise deployments. Such deployments, when co-existent with macro-cellular carriers, are also expected to help alleviate the increasing load on these macro-carriers and therefore improve user experience in the macro-network too...
Broad band Wireless Access called WiMAX is becoming popular due to its support for QoS, in real time communication. To the best of our knowledge, the WiMAX base station (BS) schedules uplink (UL) and downlink (DL) packets station wise and within a station scheduling is done with respect to priority of services. In this process, while BS transmits packets of different priorities for a subscriber station...
In all radio access technologies, starting with GSM to UMTS and others there exist an event of radio link failure. A radio link failure occurs due to degradation of air interface during an ongoing voice or a data application. The action that has to be taken is defined by their respective specification of 3GPP. Normally, the physical layer (II) detects a radio link failure. When such a failure is found...
Power control is a key air-interface management mechanism for any multiple-access CDMA-based wireless air-interface. Typically it has been used to ensure a target packet-error-rate (PER) for any user connection. In the presence of hybrid-ARQ (HARQ) on the reverse link (as in 3GPP2's EVDO-Rev A), there is additional flexibility that a power control implementation can utilize to ensure quality-of-service...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.