Assuming your cellphone has access to the internet and the ability for it to be used as a hotspot, you don't need a "d-link" or any other device.
Tethering can be by hard-wire or wireless, same thing.
The main thing you will need to do, if the phone is capabble, is to enable the tethering (aka hotspot) function. Phones with stock firmware typically lock this function in order to make you pay for it. Although, a rooted phone with a custom ROM will allow you to connect to the phones hotspot feature without the need of any further work on your part.
Again, this is under the assumption your phone even has these capabilities.