Back to results
US 2003/0200499 A1Published application
Method for multicast over wireless networks
AssigneeTelefonaktiebolaget LM Ericsson
InventorAli S. Khayrallah
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeTelefonaktiebolaget LM Ericsson
InventorAli S. Khayrallah
Estimating the term…
Multicast data in a wireless network is encoded with FEC codes where K information symbols are encoded into N transmission symbols, N>K, where K−N represents redundancy, such that reception and decoding of any K+A transmission symbols is sufficient to recover the K information symbols, where A is small relative to K. The level of redundancy may be selected to provide adequate performance to a mobile terminal at the edge of a cell, or to the mobile terminal reporting the lowest quality link. Upon handoff, a mobile terminal may be directed to an ongoing multicast in the new cell of the same information, or alternatively the new cell may transmit only the multicast packets the mobile terminal has not received. Different time segments of the information may be separately encoded, or the same information encoded with different level of redundancy, and the encoded data transmitted on different wireless channels.
A method of multicasting data over a wireless cellular communication network including at least one base station, comprising:
A method of receiving data transmitted over a wireless cellular communication network by at least one base station, said data comprising K information symbols coded into a codeword of N transmission symbols, where N>K, comprising:
A method of handing off a mobile terminal from a first base station to a second base station in a wireless cellular communication network, said mobile terminal receiving data multicast from said first terminal, comprising:
Dependencies are inferred from the claim text.