A data communication for a handoff mobile unit is maintained by data forwarding through neighboring mobile units in indoor wireless cellular communication networks operates such that, when the master unit has no available channels, the mobile unit switches over to master status to create an ad hoc cell....http://www.google.co.uk/patents/US6377805?utm_source=gb-gplus-sharePatent US6377805 - Maintaining data communication through neighboring mobile units during handoff
