Apparatus and method for communicating two stage dci
AssigneeHuawei Technologies Co., Ltd.
InventorsHAO TANG, JIANGLEI MA, XIAOYAN BI, PEIYING ZHU
Life of this patent
Estimating the term…
Abstract
A two-stage DCI framework is provided in which the first stage DCI is carried by PDCCH, second stage DCI is carried by PDSCH. The first stage DCI is blind decoded. The second stage DCI is indicated by the first stage DCI and therefor no blind decoding is necessary. The size of the second stage DCI can be very flexible, can indicate scheduling information for one carrier, multiple carriers, multi transmission for one carrier. The first stage DCI can be compact in size to enhance reliability.
Claims20
A method in an apparatus for receiving downlink control information (DCI), the method comprising:
- receiving, by the apparatus, a first stage DCI in a physical downlink control channel (PDCCH), the first stage DCI explicitly indicating a presence or absence of a second stage DCI;
- and
- when the first stage DCI indicates presence of the second stage DCI, the first stage DCI explicitly indicating a scheduling information of the second stage DCI, and receiving, by the apparatus, the second stage DCI in a first physical downlink shared channel (PDSCH), wherein the first PDSCH is a physical channel without data transmission.
A method in a network device for transmitting downlink control information (DCI), the method comprising:
- transmitting, by the network device, a first stage DCI in a physical downlink control channel (PDCCH), the first stage DCI explicitly indicating a presence or absence of a second stage DCI;
- and
- when the first stage DCI indicates presence of the second stage DCI, the first stage DCI explicitly indicating a scheduling information of the second stage DCI, and transmitting, by the network device, the second stage DCI in a first physical downlink shared channel (PDSCH), wherein the first PDSCH is a physical channel without data transmission.
An apparatus comprising:
- at least one processor;
- and
- a memory storing processor-executable instructions that, when executed, cause the processor to:
- receive a first stage DCI in a physical downlink control channel (PDCCH), the first stage DCI explicitly indicating a presence or absence of a second stage DCI;
- and
- when the first stage DCI indicates presence of the second stage DCI, the first stage DCI explicitly indicating a scheduling information of the second stage DCI, and receive the second stage DCI in a first physical downlink shared channel (PDSCH), wherein the first PDSCH is a physical channel without data transmission.
A network device comprising:
- at least one processor;
- and
- a memory storing processor-executable instructions that, when executed, cause the processor to:
- transmit a first stage DCI in a physical downlink control channel (PDCCH), the first stage DCI explicitly indicating a presence or absence of a second stage DCI;
- and
- when the first stage DCI indicates presence of the second stage DCI, the first stage DCI explicitly indicating a scheduling information of the second stage DCI, and transmit the second stage DCI in a first physical downlink shared channel (PDSCH), wherein the first PDSCH is a physical channel without data transmission.
Dependencies are inferred from the claim text.