Communications methods and infrastructure equipment for providing an indication of data transmission without a radio connection
摘要
說明書
Thus, in some embodiments, the communications device 104 may receive the DL EDT data on the downlink EDT communications resources on the PDSCH. The communications device 104 may indicate, by transmitting positive or negative acknowledgement information on a physical uplink control channel (PUCCH), whether or not the DL EDT data was received and decoded and determined to be free of errors. The positive or negative acknowledgement information may be transmitted in accordance with a hybrid automatic repeat request (HARQ) procedure. The resources for the PUCCH may be indicated in the UL grant 556 of the modified random access response 612 or it may be broadcasted in the SIB (similar to PUCCH resources for Message 4). The timing advance to apply to the PUCCH may be indicated in a timing advance field 554 of the MAC RAR 550.
According to such embodiments, constraints on the maximum amount of DL EDT data which could be transmitted within a single modified random access response 612 (e.g. taking into account a transport block size limitation applicable to certain categories of communications devices) need not be shared by a number of communications devices receiving DL EDT at the same time.
In some embodiments, two or more sets of downlink EDT communications resources may be indicated in two or more respective MAC RARs. As such, resources may be scheduled for DL EDT data destined to multiple communications devices using a single RAR DCI 410 and single modified random access response 612.
