Shu (Marloon) Wang

Evolving Random Access Channel What Is The Next for Mobile System Design? How Much Feedback Is Enough for MIMO? How to Broadcast Multimedia Contents? Interference Cancellation: A Short Overview Location Based Services for Mobiles From Chair's notes, there are more than 40 work or study items proposed for enhancing LTE Advanced or  both LTE-Advanced and HSPA. They will be completed by September 2012. Further Enhanced Non CA-based ICIC for LTE LTE Carrier Aggregation Enhancements Study on Coordinated Multi-Point Operation for LTE Study on Enhanced Uplink Transmission for LTE Study on further Downlink MIMO enhancements for LTE-Advanced Study on Further Enhancements to LTE TDD for DL-UL Interference Management and Traffic Adaptation Coordinated Multi-Point Operation for LTE Provision of low-cost MTC UEs based on LTE Proposed SI on LTE Coverage Enhancements Improvements to LTE Relay Backhaul Study on LTE Device to Device Discovery and Communication - Radio Aspects N

One key feature of any mobile communication system is to provide a mobility mechanism for mobiles to do fast and seamless switching between serving cells. There are many different handover mechanisms for achieving this goal. They include soft handover, which is mostly used for voice services, and hard handover, which is designed for data services. Hard handovers can be further classified as network-controlled handovers and mobile-based handovers. The interesting thing is if you look at the basic handover or handoff procedures I will explain in the next, you may feel a long-time debate on which entity , base stations or mobiles, should control handover or handoff. Traditionally there is no standardized direct connection between two BTS's, even they both belong to the same BSC. Therefore, there usually are a long outage for a mobile do hard handover. For example, the default forward traffic channel MAC handover scheme of CDMA2000 EV-DO Rev. 0 usually results in 100~200ms outage.

Someday your favorite and important USB flash drive will suddenly don't do its job. When you try to access your files in it, it may take hours to complete anything. When you try to format it, a pop-up message window will tell you "device media write protected" or "unable to complete format". Before you throw it into trash can, here are something you may try. Windows, Right Click, Format, Both normal/quick format. HDD LLF Low Level Format Tool HP USB Disk Storage Format Tool Active@KillDisk Someone said it may work after put it in a freezer for a while. Who knows. If it is a flash card, you may try to format it using a digital camera or mobile phone. Anyway, if you succeed in repairing your USB flash drive, it may be a good idea for you not to use it for storing any critical files in the future.

One advanced feature of 3GPP LTE-Advanced is carrier aggregation. It is an essential mechanism for LTE Release 10/11 to meet the peak-data rate, 1Gbps, requirement of IMT-Advanced of ITU-R. Beside this, it also helps LTE maintain backward compatibility, support symmetric/asymmetric operation modes and contiguous/non-contiguous aggregations. All these features help enable a variety of network deployment scenarios, such as hot-spot operations and flexible duplex. Historically carrier aggregation is not something brand-new in standards.  On 3GPP2 side, the IS-2000 standard supports a multi-carrier operation, Spreading Rate 3 or 3x. Spreading 3 is used when higher data rates are desired with more bandwidth available. Spreading 3 of multi-carrier operation can make IS-2000 not only is backward compatible with its IS-95 predecessor but also satisfies the requirements set forth by IMT-2000/3G at that time. With adding additional guard band, IS-2000 can be harmonization-ready with UMTS. Sinc

The Seagate GoFlex Home product line is a serial of network attached storage (NAS) devices made by Seagate for home computer network storage and backup.  As reported, it essentially is a plug computer powered by a 1.2GHz Marvell Kirkwood ARM processor 88F6281 (ARMv5te based) teamed up with 128MB of Nanya RAM and 256MB of flash memory. My Seagate GoFlex Home NAS 2TB comes with a 2TB storage space, a gigbit ethernet port and an USB 2.0 port. Inside the storage enclosure is a 3.5-inch hard disk reported to be a Seagate Barracuda ST32000542AS. The ethernet port is reported to be driven by a Marvell 88E116R LAN controller. Figure 1. Seagate GoFlex Home Network Storage System Before installing Optware packages on a Seagate Plug, you need decide whether you should install them on the onboard flash memory or an external storage, such as the attached NAS or an attached USB thumb drive. In my case, I chose to straightly install the packages on the NAS and mount the installation subdirecto

A list for who knows what it is for. Check DHCP 100# Enable/Disable DHCP 101# Check IP address 110# Set IP address 111# (use * for period) Check Network Mask 120# Set Mask 121# Check Gateway 130# Set Gateway 131# Check MAC 140# Check Firmware version 150# Check DNS 160# Set DNS 161# Check Web Server Port 170# Enable/Disable Web Server 7932# (may require password) Manual Reboot 732668# User Factory Reset (only changes user settings) 877778# Factory Reset (all non default settings change) 79738#