Communications methods and infrastructure equipment for providing an indication of data transmission without a radio connection
摘要
說明書
Similar paging messages (not shown) may be transmitted in other cells in order to ensure that the communications device 104 responds if it is not in the cell 103.
In response to receiving the downlink control information 402, the communications device 104 decodes the paging message 404 and determines that the infrastructure equipment 101 is attempting to communicate with (e.g. has downlink data to be transmitted to) the communications device 104. This determination may be based on the presence of an identity within the paging message 404 corresponding to an identity of the communications device 104.
In response to this determination the communications device 104, because the communications device 104 supports the downlink early data transmission feature, and has been configured with a device specific preamble, transmits a random access request 916 comprising the device specific preamble on a physical random access channel (PRACH).
In response to receiving the random access request 916 comprising the device specific preamble allocated to the communications device 104, the infrastructure equipment 101 determines that the communications device 104 is located within the cell 103 and refrains from transmitting any further paging messages in other cells, directed to the communications device 104.
