6Harmonics GWS-3000 Operating Manual Download Page 31

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8.2

Automatic Power Control

6Harmonics is in the process of developing and testing an automatic power control
algorithm.  This capability will be important for larger deployments and will be
introduced later in 2013.  The feature is not yet available.

END OF DOCUMENT

Summary of Contents for GWS-3000

Page 1: ...Inc GWS 3000 Operating Manual September 12th 2013 Steve Beaudin Yu Zhou Phone 613 366 1768 Email steve 6harmonics com yu zhou 6harmonics com Version 1 0 Security Notice This document is confidential The Intellectual Property Rights belong to 6Harmonics Inc ...

Page 2: ...tion 13 6 7 Configurations 13 6 7 1 Configure GWS Node Mode as BTS or CPE 13 6 7 2 Wireless Configuration 16 6 7 3 Radio turn on For non database application 18 6 7 4 Check channel number For non database application 18 7 0 User Commands 18 7 1 help command 19 7 2 setchan command 19 7 3 getchan command 20 7 4 txresume command 20 7 5 txoff command 20 7 6 gettxstatus command 20 7 7 getrxstatus comma...

Page 3: ...etagcmode command 25 7 25 getagcmode command 26 7 26 setrxatten command 26 7 27 getrxatten command 27 7 28 reboot command 27 8 Power Control and Link Configuration 27 8 1 Manual Power Control 27 8 1 1 Point to Point Link 28 8 1 2 Point to Multi Point Link 29 8 2 Automatic Power Control 31 ...

Page 4: ...d 6 7 3 manually enable radio for non database application Added 6 7 4 to check if BTS and CPE work on same channel Typo fix 0 04 Steve Beaudin September 12th 2012 draft Changed Power Limits to 20 dBm add explanation to several sections to provide insight fixed a few typos and formatting issues Removed the settxatten and gettxatten from the User Interface commands 1 0 Steve Beaudin September 13th ...

Page 5: ...ructions may cause harmful interference to radio communications If this equipment does cause harmful interference to radio or television reception which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures 1 Reorient or relocate the receiving antenna 2 Increase the separation between the equipment a...

Page 6: ... see GWS 3000 General Specification For instructions on the mechanical installation as well as power and grounding requirements please see GWS 3000 Installation Guide This document provides an outline for configuring and operating the GWS 3000 units in a live network Specifically this document GWS 3000 Operating Manual provides instruction on a Product Overview b Configuring the IP address of the ...

Page 7: ...d configure the devices please see GWS 3000 Operating Manual or GWS 4000 Operating Manual The mechanical solution comprises of two main parts The first part is the radio enclosure and the second part is the mounting bracket which is used to fix the module to a post or a wall 4 1 External Dimensions of the radio module 30 5 cm 30 5 cm GWS3000 GWS4000 External Dimensions 8 5 cm 17 cm Figure 1 Diagra...

Page 8: ... powered via a POE Midspan The mid span accepts AC power and is designed for international deployments with an input range of 100V 240V 50 60 Hz The mid span then combines the Ethernet data along with a DC bias voltage on the the Cat5e cable The Ethernet cable from a personal computer can be directly connected into the POE Midspan or router as shown BTS CPE iOMC Router Router UHF Airwaves POE Mids...

Page 9: ...s are intended to allow users to change configurable parameters to manage the host board or radio and the debug commands are intended for the internal design testing engineer to perform DVT or debug or set factory parameters The User Interface is the general purpose interface which should be used by the staff of the wireless operator to perform routine maintenance and management functions on the n...

Page 10: ...WD Example Use putty on Windows XP to access the Node Note The SSH interface should only be used by qualified personnel trained by 6Harmonics Root access requires a User Name and Password and is only available to 6Harmonics personnel or professional installers which have been trained and certified by 6Harmonics This guide is meant for both non certified users as well as professional installers whi...

Page 12: ...config network Modify the ip address and gateway save it Then type etc init d network restart 6 5 Image burn and upgrade 6 5 1 Burn image for first time Connect serial cable to host board assume boot environment is ready image tftp server and http server are ready On terminal of PC when prompt press any key Press any key to access the bios menu Choose boot over Ethernet After boot success in termi...

Page 13: ...tion will lost The new image with default configuration will be used 6 6 3 Upgrade the application Assume upgrade environment is ready application package and http server are ready In SSH shell type wget http xx xx xx xx packagename ipk After download the application package In SSH Shell type opkg install applicationpackage ipk 6 7 Configurations 6 7 1 Configure GWS Node Mode as BTS or CPE GW 3000...

Page 16: ...the etc init d config wireless to change config_sta to config_ap save it type config_ap in SSH shell then reset the GWS Node 6 7 2 Wireless Configuration There are two ways to modify the wireless configuration 1 For temporary change No reset needed Open etc config wireless ...

Page 17: ...t you must issue the following commands a wifi down and then b wifi up The new setting will be take effect but these are not permanent Once the GWS Node is reset the changes will be gone and the default configuration will be loaded from the file 2 For permanent changes Open sbin config_ap for BTS or sbin config_sta for CPE Attention Modifying the wireless settings are for debug purposes only and y...

Page 18: ...ommands are a set of commands for users to configure the radio and get information from the radio The supported commands are listed in table 1 and can be exercised by telnetting to the node Table 1 General User Commands Commands Description setchan Set Channel Number getchan Show Channel Number setagcmode Set AGC mode getagcmode Show AGC mode rfinfo Show RF informations u Tx power up 0 5dBm c Tx p...

Page 19: ...setchan command The setchan command is to set what channel the radio is going to work on The channel number range will vary from region to region For example for US the number would be 14 51 except channel 36 37 and 38 For operation in the US the module needs to querry the available channel from FCC database and the SW will only allow the module to tune to a channel which is part of the channel li...

Page 20: ...on GWS Cmd txoff 7 6 gettxstatus command To know what tx status is and what tx parameters are set to you can use gettxstatus command GWS Cmd gettxstatus TX OFF Tx_Atten 10 TV Channel 41 CurTxPower 20 0 dbm MaxTxPower 20 0 dbm MinTxPower 6 5 dbm TX Power Cal ON GWS Cmd 7 7 getrxstatus command The rxstatus command will return the current RX status GWS Cmd getrxstatus RX ON AGC Mode 2 RF IFOUT IFOUT2...

Page 21: ...nfo command The rfinfo command will return the current radio configuration GWS Cmd rfinfo 6 Harmonics GWS 1100 Rev 04 Firmware 601100 410 Generated at Jul 9 2013 16 25 19 Radio SNO 19 TX DOWN RX DOWN Region 0 Channel 41 CurTxPower 20 0 dbm MaxTxPower 20 0 dbm MinTxPower 6 5 dbm RX Gain 12 0 dbm Temperature 38 0 C GWS Cmd 7 11 u command The u command will set tx power up 0 5dBm GWS Cmd u 7 12 d com...

Page 22: ...ill only be permitted to change the channel to a channel which is part of the channel list 7 14 getchanlist command The getchanlist will return the current channel list stored in memory GWS Cmd getchanlist GWS Cmd 14 15 35 If the radio has received the channel list from a white space database then this command can be used by the operator to determine which channels are available The command does n...

Page 23: ...nitor in the telnet window will initial the program which allows the status of the radio link to be monitored real time Below is an example of the parameters which are displayed GWS Cmd monitor 7 18 setinstaller command The setinstaller command is to record who installed the GWS Node For US customers this field is made available to the White Space database and the node will not be allowed to conne...

Page 24: ...ory rules or the license an operator may have in place and must be programmed by the professional installer For US customers the software will not allow the user to manually program the channel list The subchanlist does not come from the database but is meant to further restrict the channels which are used based on the hardware configuration A situation where the user may want to reduce the number...

Page 25: ... properly programmed will improve network performance by ensuring nodes do not try to transmit at frequencies for which an in line filter or combiner might be attenuating the signal 7 21 getsubchanlist command The getsubchanlist is used to read the sub channel list 7 22 cu command The cu command is to set tx power up 5 dBm 7 23 cd command The cd command is to set tx power down 5 dBm Note The Cu an...

Page 26: ...e 1 command or even turning off the AGC completely using the setagcmode 0 command The receiver of the GWS 3000 has been designed to sustain fairly high levels of interference and for the vast majority of deployments leaving the radio in agcmode 2 the default configuration will provide good results This information is purely to give our customers some insight and help them optimize network performa...

Page 27: ...ity or which are susceptible to strong interference the user may find the radio performs better if the first attenuator value is increased slightly since this will reduce the amount of interference incident upon the demodulator 7 27 getrxatten command The getrxatten command will return current setting for both attenuators GWS Cmd getrxatten FRxAtten 10 RRxAtten 30 GWS Cmd 7 28 reboot command The r...

Page 28: ...which are co channel or even adjacent or alternate channel to the link being configured 6Harmonics has surveyed the noise floor of UHF channels is several US and Canadian cities and some channels are very clean with an integrated noise power near 102 dBm 5MHz but many channels have an noise floor which is 3 6 dB above ktBf If the RSSI is at 75 dBm but the MCS is low not consistently shown as MCS6 ...

Page 29: ... with a few small but important differences The Uplink power control should be performed first to ensure that signals from the 2 or more CPE s arrives at the BTS at a similar power This will prevent the creation of a near far issue for the BTS which can severely degrade throughput For the Downlink power control the BTS TX power should be decreased until the CPE with the weakest signal has an RSSI ...

Page 30: ...n the CPE is capable of receiving the downlink signal from near 100 dBm to as high as 15 dBm o Telnet to the BTS o If the RSSI at the furthest CPE is below or above 75 dBm increase or decrease the BTS TX Power by using the following commands U Æ Increases power by 0 5 dB fine adjustment C Æ Decreases TX power by 0 5 dB fine adjustment Cu Æ Increases power by 5 dB course adjustment Cd Æ Decreases T...

Page 31: ...atic Power Control 6Harmonics is in the process of developing and testing an automatic power control algorithm This capability will be important for larger deployments and will be introduced later in 2013 The feature is not yet available END OF DOCUMENT ...

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