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BFWAtg Guard Bands 28GHz
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BFWAtg-Guard Bands 28GHz. TM4 Work Item DETR/TM04069: ... One guard channel in each assignment, but mutual co-operation and co-ordination ... – PowerPoint PPT presentation
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Title: BFWAtg Guard Bands 28GHz
1
BFWAtg - Guard Bands 28GHz
- Draft 26GHz Recommendation
- Two FDD systems
- At least one 28MHz slot or single polarisation
only in adjacent slots. - Two TDD or TDD/FDD mix
- Two 28MHz slots required.
- Or
- No guard bands but edge slots and mutual
co-operation.
BFWAtg(00)20
2
BFWAtg-Guard Bands 28GHz
- TM4 Work Item DETR/TM04069
- Two TDMA/FDD systems, 28MHz channels
- No guard band with site sharing
- No guard band with near site sharing but better
NFD required. - One 28MHz guard channel required for
unco-ordinated deployment. - Contd.
3
BFWAtg-Guard Bands 28GHz
- TM4 Work Item DETR/TM04069
- One TDMA/FDD and one FDMA system, 28MHz channels
- One guard channel with site sharing.
- One guard channel with near site sharing.
- Two 28MHz guard channels required for
unco-ordinated deployment.
4
BFWAtg-Guard Bands 28GHz
- RA/Aegis Study
- Two systems with similar characteristics
- One guard channel required.
- Two dissimilar systems (i.e.different
channelisation). - One guard channel in each assignment, but mutual
co-operation and co-ordination may allow some use.
5
Summary
- Guard channel 0
- Mutual co-operation reqd including site
sharing/near site sharing, tighter NFDs needed. - Guard Channel 1
- Unco-ordinated deployment, dissimilar multiple
access, similar FDD systems. - Guard channels 2
- Unco-ordinated dissimilar multiple access, TDD or
TDD/FDD mix
6
Summary
- Therefore for maximum protection and greatest
freedom for deployment, 2 guard channels would
seem appropriate. - For greatest spectrum use Edge Bands /
co-operation zones seem appropriate but
co-operation must take place. - Could depend on the size of assignments.
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