QoS na wayar hannu

Mobile QoS

Ingancin tsarin sabis (QoS) yana sarrafa aiki, aminci da amfani da sabis na sadarwa. Masu samar da sabis na wayar hannu na iya bayar da QoS ta wayar hannu ga abokan ciniki kamar yadda masu samar da sabis na PSTN da masu samar da sabis na intanet za su iya bayar da QoS. Ana samar da hanyoyin QoS koyaushe don ayyukan da aka canza da'ira, kuma suna da mahimmanci ga ayyukan da ba su da sassauƙa, misali watsa shirye-shiryen multimedia. Hakanan yana da mahimmanci a cikin hanyoyin sadarwa da irin waɗannan ayyuka ke mamaye, wanda hakan ke faruwa a cikin hanyoyin sadarwar wayar hannu na yau.

• Ana iya katse kiran waya ko wani zaman bayan mikawa, idan sabon tashar tashar ta cika. Bayar da ba za a iya hangowa ba ya ba da cikakkiyar tabbacin QoS a lokacin farawa.
• Tsarin farashi sau da yawa ya dogara ne akan kuɗin minti daya ko na megabyte maimakon farashi mai laushi, kuma yana iya zama daban ga sabis na abun ciki daban-daban.
• Wani muhimmin bangare na QoS a cikin sadarwa ta hannu shine Matsayin sabis, wanda ya haɗa da yiwuwar katsewa (haɗarin cewa tashar wayar hannu tana waje da yankin ɗaukar sabis, ko kuma ta shafi tsangwama ta hanyar tashar, watau crosstalk) toshe yiwuwar (haɗayin cewa ba za a iya ba da matakin QoS da ake buƙata ba) da kuma tsara yunwa. Wadannan matakan aiki suna shafar hanyoyin kamar Gudanar da motsi, Gudanar da albarkatun rediyo, kula da shigarwa, tsarawa mai kyau, tsarawa na tashar da sauransu.

Abubuwa da yawa suna shafar ingancin sabis na cibiyar sadarwar hannu.^[1] Yana da kyau a kalli QoS galibi daga ra'ayin abokin ciniki, wato, QoS kamar yadda mai amfani ya yanke hukunci. Akwai ma'auni na QoS ga mai amfani wanda za'a iya auna shi don kimanta QoS. Wadannan ma'auni sune: ɗaukar hoto, Samun dama (ya haɗa da GoS), da Ingancin sauti.^[2] A cikin ɗaukar hoto ana auna ƙarfin siginar ta amfani da kayan aikin gwaji kuma ana iya amfani da wannan don kimanta girman tantanin halitta. Samun dama shine game da ƙayyade ikon cibiyar sadarwa don kula da kiran nasara daga cibiyoyin sadarwar hannu zuwa cibiyoyin sadarwa na hannu zuwa wayar hannu. Ingancin sauti yana la'akari da saka idanu kan kiran nasara na wani lokaci don bayyana tashar sadarwa. Duk waɗannan alamun masana'antar sadarwa suna amfani da su don kimanta ingancin sabis na cibiyar sadarwa.^[2]

Ana kuma auna QoS a masana'antu daga mahangar ƙwararre (misali injiniyan zirga-zirgar ababen hawa). Wannan ya ƙunshi tantance hanyar sadarwa don ganin ko tana samar da ingancin da ake buƙata don tsara hanyar sadarwa. Ana amfani da wasu kayan aiki da hanyoyi (masu nazarin tsari, gwaje-gwajen tuƙi da ma'aunin aiki da kulawa), don wannan ma'aunin QoS:

• Ana haɗa masu nazarin yarjejeniya zuwa BTSs, BSCs, da MSCs na wani lokaci don bincika matsalolin da ke cikin hanyar sadarwar salula. Lokacin da aka gano matsala ma'aikatan zasu iya yin rikodin shi kuma ana iya nazarin shi.
• Gwaje-gwaje na motsa jiki suna ba da damar gwada cibiyar sadarwar hannu ta hanyar amfani da ƙungiyar mutane waɗanda ke ɗaukar matsayin masu amfani kuma suna ɗaukar matakan QoS da aka tattauna a sama don kimanta QoS na cibiyar sadarwa. Wannan gwajin ba ya aiki ga dukan hanyar sadarwa, don haka koyaushe samfurin kididdiga ne.
• A cikin Cibiyoyin Ayyuka da Kulawa (OMCs), ana amfani da masu lissafi a cikin tsarin don abubuwan da suka faru daban-daban waɗanda ke ba da mai ba da hanyar sadarwa bayanai game da jihar da ingancin hanyar sadarwa.
• A ƙarshe, korafe-korafen abokan ciniki sune mahimman tushen ra'ayoyi akan QoS, kuma kada a yi watsi da su.

Gabaɗaya, ana auna darajar sabis (GoS) ta hanyar kallon zirga-zirgar da aka ɗauka, zirga-zane da aka bayar da lissafin zirga-zarge da aka toshe da kuma rasa.^[1] Adadin kiran da aka rasa shine ma'auni na GoS. Ga ƙungiyoyin kewayawar salula GoS mai karɓa shine 0.02. Wannan yana nufin cewa masu amfani biyu na ƙungiyar da'irar daga cikin ɗari za su fuskanci ƙin kira a lokacin aiki a ƙarshen lokacin tsarawa. Matsayin ma'auni na sabis shine matakin da aka yarda da shi na zirga-zirga wanda cibiyar sadarwa zata iya rasa. Ana lissafin GoS daga Tsarin Erlang-B, a matsayin aikin yawan tashoshin da ake buƙata don ƙarfin zirga-zirgar da aka bayar.

Ingancin sauti na cibiyar sadarwar salula ya dogara da, a tsakanin sauran dalilai, tsarin gyare-gyare (misali, FSK, QPSK) a cikin amfani, daidaitawa da halaye na tashar da kuma aiwatar da siginar da aka karɓa a mai karɓa ta amfani da DSPs.

1. 1 2 Empty citation (help)
2. 1 2 "Quality of Service Indicators". GSM Mobile Networks - Quality of Service Survey (July 2002). Autoridade Nacional de Comunicações. October 2002. Archived from the original on 2005-11-20. Retrieved October 14, 2011.