pdcp

Layered Structure of LTE air Interfaces Layered Structure of LTE air Interfaces LTE air interface layer structure, and WCDMA air interface layer structure is the same, from top to bottom is also divided into several layers of RRC-PDCP-RLC-MAC-PHY, RRC belongs to the network layer, PDCP, RLC and MAC belongs to the link layer, PHY belongs to the physical layer. Therefore, if you are familiar with the WCDMA

#!/bin/bash## Install Hadoop 2 using PDSH/PDCP where possible.## Command can be interactive or file-based. This script sets up# a Hadoop 2 cluster with basic configuration. Modify data, log, and PID# directories as desired. Further configure your cluster with./conf-hadoop2.sh### Basic Environment variables. Edit as necessaryHadoop_version=2.0.5-alphaHadoop_home= "/opt/hadoop-${hadoop_version}"Nn_data_dir=/var/data/hadoop/hdfs/nnSnn_data_dir=/var/data/

The full name of pdsh is parallel distributed shell. Similar to Pssh, pdsh can perform operations on remote target hosts in parallel. When you need to perform commands or distribute tasks in batches, use this command to get twice the result with half the effort. In addition, pdsh supports interactive mode. When the command to be executed is uncertain, you can directly access the pdsh command line, which is very convenient. I. pdsh application scenarios The application scenarios of pdsh are basi

services to the network layer, which is divided into the media Access sub Layer (MAC), the Wireless Link Control sub Layer (RLC), the packet Data set Protocol sub Layer (PDCP) and the broadcast/multicast Control child layer (BMC). The MAC sub layer controls the access signaling process of the wireless channel. The RLC child layer provides logical link control for the wireless interface. The BMC-SAP child layer provides broadcast/multicast services fo

", imgorign ); Cvvshowimage ("dimage", imgdest ); // Display the image on picturebox CDC * PDC = getdlgitem (idc_picture)-> getdc (); CDC dcmemory; Bitmap bm; Dcmemory. createcompatibledc (PDC ); Cbitmap * pbmp; Cstring szfilename = "image.bmp "; Hbitmap HBK = (hbitmap): LoadImage (null, szfilename, image_bitmap, 0, 0, lr_loadfromfile ); If (null! = HBK) { Pbmp = cbitmap: fromhandle (HBK ); Pbmp-> GetObject (sizeof (Bitmap), BM ); Dcmemory. SelectObject (pbmp ); PDC-> bitblt (0, 0, BM. bmwidt

handset (UE), namely the various protocols involved in the Rf-mac-rlc-rrc-gmm/sm/sms modules, To complete the task of establishing a data channel, which is the work of the control plane. It is also necessary to achieve the leftmost block diagram of Figure 12.2, which describes the various protocols associated with the handset (UE), the various protocols involved in the RF-MAC-RLC-PDCP-IP/PPP, and the related applications (applications), To transfer d

Pdsh "-a" argument. Finally, all hosts are managed conveniently.After the installation is complete, you can view the version number of the PDSH and the module information that you can use through "Pdsh–v", as follows:[Email protected] ~]$ pdsh-vpdsh-2.29Rcmd modules:ssh,rsh,exec (Default:rsh)Misc Modules:machines,dshgroupIn addition, you can display all currently loaded module information through "Pdsh-l". After the PDSH installation is complete, there is also an available tool

Translated from http://bbs2.c114.net/home.php?mod=spaceuid=918520do=blogid=4283 donnar of personal Space Radio Bearer (RB) is a series of protocol entities and configurations ENODEB for UE, including PDCP protocol entities, RLC protocol entities, Mac protocol entities, and PHY-assigned series of resources. RB is a channel for the UU interface to connect ENODEB and UE (including PHY, MAC, RLC, and PDCP),

srb2 is also contained in RRC messages, but these NAS messages do not include any RRC Protocol control information, but are only included in RRC when RRC messages are transmitted, RRC is a carrier. Once the security mode is activated, all RRC messages (including some NAS or 3GPP messages) of srb1 and srb2 are protected and encrypted through PDCP, NAS only protects and encrypts the integrity of NAS messages. In other words, layer-2 encryption and Pr

configuration file.When installing the PDSH package, it comes with a tool PDCP parallel copy tool that can help in parallel file distribution.For example, you modify a mapred-site.xml file on the DN1, and then you need to send this file to other DN nodes, you can do thisPdcp–w dn[2-100]/pathtohadoop/etc/hadoop/mapred-site.xml/pathtohadoop/etc/hadoop/, very easy to use.You can also do similar system kernel updates, you can use

Buffer Status Report (BSR) When introducing Sr, we know that the resources required for uplink data transmission are obtained through BSR, the buffer status report process is used to provide the service ENB with information about how much data the UE has to send in the upstream buffer. RRC uses the configured two timers.Periodicbsr-timerAndRetxbsr-timerAnd for each logical channel through signaling indicationLogicalchannelgroupWhich Logical Channel group (LCG) belongs to this logical channel? We

processing, receiving, storing, and sending messages for each protocol layer;2.3 Radio Layer1, radio the Start function creation thread (RADIO_THREAD) to handle the data frame transceiver; The Radio_interface interface of the PHY layer entity is called in the thread function to process the upstream and downstream data, and the Radio_interface will further include the , the downstream processing, in the processing of the downstream data, when the user data processing, will use the DL_SCHED_MUTX

, the qos of LTE is based on bearer. That is to say, it is based on connection. If your connection is set, the qos is fixed. For example, if you repair a high speed, the qos is 120 km. If you repair a National Highway, the qos is 80. No matter what car is running above, the pdcp below, rlc, mac, and physical layers are more about maintaining the priority of this link than the package. At present, the minimum granularity of qos is this. LTE is classifi

I was trying to distribute the/etc/hosts file to 10.205.10.11 to 20 machinesInstallation commandssudo yum-y install clusterssh pdsh pdsh-rcmd-ssh Pdsh-rcmd-rsh musshPdcp-w Ssh:[email protected][11-20]/etc/hosts/etc/The PDSH package also includes a PDCP command that copies files to a set of machines, using the following:pdsh-w [Ssh_or_rsh]:[username] @nodesrv [1,2-4,5] srcfile DESTo copy the file Test.docx to the/doc of the above machine, execute the f

Spatial multiplexing (2 or 4 antennas, Open-Loop Space Division Multiplexing ); TM4: Closed-Loop Spatial multiplexing (2 or 4 antennas, closed-loop space division multiplexing ); TM5: multi-user MIMO (2 or 4 antennas, multi-user MIMO ); TM6: Closed-Loop rank-1 Spatial multiplexing (2 or 4 antennas, single-layer Closed-Loop Space Division Multiplexing ); Tm7: single antenna port beamforming (single antenna or multiple antennas, repeat ); Tm8: dual-layer beamforming4 (dual-layer repeat) Note:The

subcarriers and the number of OFDM or SC-FDMA symbols. Channel Air Interface (uu port) An air interface is an interface between a terminal and an access network. It is also called a wireless interface. In LTE, the air interface is the interface between the terminal UE and enodeb. The air interface protocol is mainly used to establish, reconfigure, and release various wireless bearer services. An air interface is a fully open interface. devices produced by different manufacturers can communicate