BUNDLING AND HYBRID AUTOMATIC REPEAT REQUEST OPERATION FOR ENHANCED MACHINE-TYPE COMMUNICATION

摘要

Methods, systems, and devices for wireless communication are described. A user equipment (UE), which may be a machine-type communication device and may have a half-duplex capability, may receive grants for uplink resources and downlink resources that overlap in time. The UE may prioritize the grants and either drop the low priority grant or may monitor a non-overlapping portion of resources assigned by the lower priority grant, for example. The UE may determine an acknowledgement mode for the downlink transmission based on one or more grants or on an explicit indication from a base station in some examples. A control format indicator may be interpreted based on the grant or on the bundling size. In some cases, the UE may identify a retuning time (e.g., for switching between transmit and receive modes or for switching frequencies) and may determine uplink and downlink bundling sizes based on the retuning time.

主权项

1. A method of wireless communication, comprising:
communicating using a first set of bundled resources for an uplink data channel; determining that a second set of bundled resources for a downlink control channel comprises an uplink grant with a same hybrid automatic repeat request (HARQ) process identifier as the uplink data channel, an uplink grant with a different hybrid automatic repeat HARQ process identifier than the uplink data channel, or a downlink grant; identifying a time difference between the first set of bundled resources and the second set of bundled resources; and communicating using the second set of bundled resources based at least in part on the determining and the identifying.