The patent is about how packets could be structured and sent on a wireless network, so not necessarily a "software patent".
https://worldwide.espacenet.com/patent/search/family/0581867...
https://worldwide.espacenet.com/patent/search/family/0581867...
That seems more to me like a mere protocol convention, exactly the kind of stuff that should be in a standard communication protocol just so everyone agrees on the same fields.
How is that a new "invention"?