Chadney - PSCR

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Priority – Admission aspects Two configura0ons of sharing under study Configura0on possibili0es • Secondary users can access Band 14 directly or indirectly • Indirect access is when Band 14 is used for overflow traffic from another Band class Public safety usersSecondary usersPublic safety usersSecondary users:direct access barredBAND 14 BAND 14 Direct access by secondary usersSecondary users attemptaccess from commercialband due to high loadOther LTE Band Indirect access by secondary usersJune 5, 2013 For Official Use Only 4
Priority – Admission aspects Direct Access versus Indirect Access Direct access for secondary users • Main considera?on is capacity of Physical Random Access Channel, (PRACH). Ini?al analysis shows LTE access capacity is 6-‐8 ?mes 3G, maybe more. Secondary users can be “throcled back” by up to 95% using Access Class Barring features. • Analysis ongoing of PRACH capacity including considera?on of the higher capacity PRACH configura?ons already in the 3GPP standard Indirect access for secondary users • Priority access to Band 14 for Public Safety is not impacted by overflow traffic acempts to Band 14. Overflow traffic acempts can use different PRACH preambles to those for direct access. No conten?on for PRACH resources between user types. • Further analysis of Direct Access is needed • Indirect Access does not have to experience conten0on between public safety and secondary users for access resources. June 5, 2013 For Official Use Only 5
Page 1 and 2: Traffic Engineering Considera0ons
Page 3: Quality of Service Considera0ons
Page 7 and 8: Traffic Engineering - Capacity I
Page 9: Band 14 LTE holds the promiseof del

Chadney - PSCR

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