Method and apparatus for transmitting downlink control information for resource allocation in a wireless communication system
AssigneeSamsung Electronics Co., Ltd.
InventorsCheng Shan, Jin Kyu Han, Youn Sun Kim
Life of this patent
Estimating the term…
Abstract
A method and apparatus are provided for transmitting and receiving Downlink Control Information (DCI) in a wireless communication system. A method includes generating downlink control information including an antenna port indicator comprising antenna port information and scrambling identity information; and transmitting, to a terminal, the downlink control information and data associated with the downlink control information. The scrambling identity information indicates one of two scrambling sequences, if a number of antenna ports indicated by the antenna port information is one and one transport block is enabled.
Claims16
A method for wireless communication, the method comprising:
- generating downlink control information including an antenna port indicator indicating antenna port information, rank information, and scrambling identity information;
- and
- transmitting, to a terminal, the downlink control information, data associated with the downlink control information, and a demodulation reference signal (DMRS) used to process the data,
- wherein the scrambling identity information indicates one of two scrambling sequences of the DMRS for the terminal, when a number of antenna ports of the DMRS indicated by the antenna port information is one and one transport block is enabled,
- wherein the rank information indicates up to 4 layers when the one transport block is enabled, and the rank information indicates up to 8 layers when two transport blocks are enabled, and
- wherein the antenna port indicator is 3 bits.
A method for wireless communication, the method comprising:
- receiving downlink control information, data associated with the downlink control information, and a demodulation reference signal (DMRS) used to process the data, the downlink control information including an antenna port indicator indicating antenna port information, rank information, and scrambling identity information;
- identifying a scrambling sequence of the DMRS based on the scrambling identity information;
- and
- processing the data based on a channel estimation determined using the identified scrambling sequence,
- wherein the scrambling identity information indicates one of two scrambling sequences for the DMRS, when a number of antenna ports of the DMRS indicated by the antenna port information is one and one transport block is enabled,
- wherein the rank information indicates up to 4 layers when the one transport block is enabled, and the rank information indicates up to 8 layers when two transport blocks are enabled, and
- wherein the antenna port indicator is 3 bits.
An apparatus for a wireless communication system, the apparatus comprising:
- a transceiver configured to transmit and receive a signal;
- and
- a controller configured to:
- control to generate downlink control information including an antenna port indicator indicating antenna port information, rank information, and scrambling identity information, and
- transmit, to a terminal, the downlink control information, data associated with the downlink control information, and a demodulation reference signal (DMRS) used to process the data,
- wherein the scrambling identity information indicates one of two scrambling sequences of the DMRS for the terminal, if a number of antenna ports of the DMRS indicated by the antenna port information is one and one transport block is enabled,
- wherein the rank information indicates up to 4 layers when the one transport block is enabled, and the rank information indicates up to 8 layers when two transport blocks are enabled, and
- wherein the antenna port indicator is 3 bits.
An apparatus for a wireless communication system, the apparatus comprising:
- a transceiver configured to transmit and receive a signal;
- and
- a controller configured to:
- control to receive downlink control information, data associated with the downlink control information, and a demodulation reference signal (DMRS) used to process the data, the downlink control information including an antenna port indicator indicating antenna port information, rank information, and scrambling identity information,
- identify a scrambling sequence of the DMRS based on the scrambling identity information, and
- process the data based on a channel estimation determined using the identified scrambling sequence,
- wherein the scrambling identity information indicates one of two scrambling sequences of the DMRS, if a number of antenna ports of the DMRS indicated by the antenna port information is one and one transport block is enabled,
- wherein the rank information indicates up to 4 layers when the one transport block is enabled, and the rank information indicates up to 8 layers when two transport blocks are enabled, and
- wherein the antenna port indicator is 3 bits.
Dependencies are inferred from the claim text.