User equipment and base station using dynamic TDD configuration mechanism

摘要

The present disclosure is directed to a user equipment and a base station which use a dynamic time division duplex (TDD) configuration mechanism. The present disclosure proposes implementing the dynamic TDD mechanism by imposing a restriction to the dynamic TDD configurations to adhere to a set of allowable dynamic TDD configurations. The uplink and downlink HARQ timing reference configurations could be derived from the set of allowable dynamic TDD configurations. The set of allowable TDD configurations, the uplink HARQ timing reference configuration and the downlink HARQ timing reference configuration could be derived based on specific rules. The maximum number of downlink HARQ processes for TDD would follow the downlink HARQ timing reference configuration.

主权项

1. A base station comprising:
a transmitter which transmits data; a receiver which receives data; a processor coupled to the transmitter and the receiver and is configured for:
selecting a current time division duplex (TDD) configuration from a predetermined TDD configurations set;selecting a dynamic TDD configuration based on the current TDD configuration after transmitting the current TDD configuration via the transmitter;determining a downlink hybrid automatic request (DL-HARQ) timing reference configuration from the predetermined TDD configuration set, wherein
downlink subframes of the DL-HARQ timing reference configuration are a superset of each TDD configuration of an allowable set of dynamic TDD configurations, wherein
the allowable set of dynamic TDD configurations comprises one or more possible TDD configurations by which each downlink subframe of the current TDD configuration is not re-configured to a uplink subframe by the dynamic TDD configuration selected from the allowable set;determining an uplink hybrid automatic request, UL-HARQ, timing reference configuration from the predetermined TDD configuration set, whereinuplink subframes of the UL-HARQ timing reference configuration are a superset of each TDD configuration of the allowable set of dynamic TDD configurations; andimplementing a DL HARQ process by following a reference timing of the DL-HARQ timing reference configuration and a UL HARQ process by following a reference timing of the UL-HARQ timing reference configuration.