On-line distributed TDMA/FDMA/CDMA link assignment in mobile radio networks with flexible directivity
US5742593A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 29, 1995 |
| Grant date | Apr 21, 1998 |
| Priority date | — |
| Expiry date | Aug 29, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W72/0466
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
When establishing a link (i-j) between two nodes i, j in a mobile radio communications network, transmission parameters are assigned such that conflicts and interference with nodes that neighbor the nodes i and j are avoided. A time-slot and a frequency-code value are assigned to the link (i-j) from a defined set of time-slots T, and from a defined set of frequency-code values FC. Set T contains time slots (t) during which links in the network can be activated, and set FC contains frequency-code values (f, c) each of which specifies a frequency or a frequency-code pair for association with the links. A time slot t.sub.k is first chosen from set T which slot is not in use for links between node i and nodes neighboring node i, or for links between node j and nodes neighboring node j. A frequency-code value (f, c).sub.1 is next chosen from set FC which value is not in use by any node that neighbors node i or by any node that neighbors node j, during the chosen time slot t.sub.k. If no frequency-code value (f, c).sub.1 is available during the chosen time-slot t.sub.k, t.sub.k is removed from the set T of available time slots and another available time slot is chosen until a frequency-c…
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