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On-line distributed TDMA/FDMA/CDMA link assignment in mobile radio networks with flexible directivity

  • US 5,742,593 A
  • Filed: 08/29/1995
  • Issued: 04/21/1998
  • Est. Priority Date: 08/29/1995
  • Status: Expired due to Term
First Claim
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1. A method of assigning transmission parameters when establishing a link (i-j) between two nodes i, j in a communications network, whereby potential conflicts and interference with other nodes of the network that neighbor the nodes i, j are avoided, the method comprising the steps of:

  • assigning a time slot tk, and a frequency-code value (f, c)1 to a link (i-j) between a pair of nodes i, j, in a communications network, byfirst choosing from a set T an available time slot tk which is not in use for links established between node i and nodes neighboring node i, or for links established between node j and nodes neighboring node j, wherein k connotes a currently chosen time-slot;

    second choosing from a set FC an available frequency-code value (f, c)1 which is not, during the chosen available time slot tk, in use by a node that neighbors node i, or by a node that neighbors node j, wherein 1 connotes a currently chosen frequency-code value; and

    returning, if no frequency-code value (f, c)1 is available during a chosen time slot tk, to said first choosing step after removing tk from the set T of available time slots;

    whereinT is a defined set of available time slots (t) during which links in the communications network can be activated; and

    FC is a defined set of frequency-code values (f, c) each of which defines a frequency or a frequency-code pair for association with the links in the communications network.

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