Patent ID: 9313758
Filing Date: 2016-04-12
CPC Classification: H04W

Claim Text:
1. A radio communication method for communicating between locally fixed base stations and terminals, where an available radio resource is divided into a grid of radio resource units, comprising the steps of: allocating at a base station a plurality of at least two blocks of radio resource units, each block of allocated radio resource units comprising at least two radio resource units consecutive in time; and at the base station, receiving a plurality of scheduled messages in the allocated plurality of at least two blocks of radio resource units, each message transmitted asynchronously in time or in frequency by one of a corresponding plurality of terminals; measuring at least one of a timing offset from the beginning of the block of allocated radio resource units or a frequency offset of each of the messages; determining a subset of at least two terminals having one of the timing offset within one predefined range or the frequency offset within one predefined range, the predefined range of timing offset exceeding the duration of one radio resource unit and the predefined range of frequency offset exceeding the frequency bandwidth of one radio resource unit; and transmitting a multicast message from the base station to the determined subset of at least two terminals.