Appeal 2007-0834
Application 09/757,913
invention is based on the idea that the context updating of the compressor
and decompressor is stopped in both the mobile terminal and the old
network entity, which ensures that both the mobile terminal and the old
network entity use the same context, after which a snapshot of the
compression and decompression context information is taken in the old
network entity and transmitted to the new network entity to be stored
therein. The mobile compressor compresses at least one header of at least
one packet with the said context information and transmits the compressed at
least one header of at least one packet to the new network entity. Then the
new network entity decompresses the received at least one packet of the at
least one header with the stored decompression context information.
Because the context information has not changed during the relocation
process, the compressor of the mobile terminal and the decompressor of the
new network entity are automatically in synchronism and the data transfer
can be continued (Specification 1 and 4).
Representative claim 1 is illustrative:
1. A method of relocating the header compression context in a
packet network which transmits packets having compressed headers,
said method comprising:
establishing a connection between a mobile terminal and a
first network entity including storing context information used with
compression and decompression of the headers of the packets at
the mobile terminal and the first network entity;
stopping the context information updating in the mobile terminal and
in the first network entity;
2
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Last modified: September 9, 2013