Method and apparatus for searching control information by terminal in multinode system
AssigneeLG Electronics Inc.
InventorsJi Won Kang, Bin Chul Ihm, Su Nam Kim, Jin Young Chun, Sung Ho Park, Ki Tae Kim
Life of this patent
Estimating the term…
Abstract
Provided is a method of searching for control information of a user equipment (UE) in a multi-node system including a plurality of nodes and a base station connected to each of the plurality of nodes and capable of controlling the nodes. The method includes: receiving search space indication information from the base station; and searching for the control information in a radio resource region indicated by the search space indication information, wherein the search space indication information indicates any one of a first search space and a second search space.
Claims4
A method for monitoring control information in a wireless communication system, the method performed by an advanced user equipment (UE) and comprising:
- receiving a higher layer signal indicating a subframes in which the advanced UE has to monitor an enhanced physical downlink control channel (EPDCCH);
- in a first subframe which is not indicated by the higher layer signal, monitoring a common search space for the advanced UE and a physical downlink control channel (PDCCH) UE-specific search space,
- wherein the common search space for the advanced UE is same as a common search space for a legacy UE;
- and
- in a second subframe which is indicated by the higher layer signal, monitoring a common search space for the advanced UE and an EPDCCH UE-specific search space,
- wherein, in a time domain, the common search space for the advanced UE and the PDCCH UE-specific search space are located in first N orthogonal frequency division multiplexing (OFDM) symbols, where N indicates a number of OFDM symbols constituting a PDCCH of a subframe, N is a natural number and 1≤N≤4,
- wherein, in the time domain, the EPDCCH UE-specific search space is located in at least one OFDM symbol after the N OFDM symbols in the subframe, and
- wherein the advanced UE receives a signal in the EPDCCH UE-specific search space using a reference signal which is not used by the legacy UE in the PDCCH UE-specific search space.
An advanced user equipment (UE) monitoring control information in a wireless communication system, the advanced UE comprising:
- a radio frequency (RF) unit configured to transmit and receive a radio signal;
- and
- a processor coupled with the RF unit and configured to:
- receive a higher layer signal indicating a subframes in which the advanced UE has to monitor an enhanced physical downlink control channel (EPDCCH),
- in a first subframe which is not indicated by the higher layer signal, monitor a common search space for the advanced UE and a physical downlink control channel (PDCCH) UE-specific search space,
- wherein the common search space for the advanced UE is same as a common search space for a legacy UE, and
- in a second subframe which is indicated by the higher layer signal, monitor a common search space for the advanced UE and an EPDCCH UE-specific search space,
- wherein, in a time domain, the common search space for the advanced UE and the PDCCH UE-specific search space are located in first N orthogonal frequency division multiplexing (OFDM) symbols, where N indicates a number of OFDM symbols constituting a PDCCH of a subframe, N is a natural number and 1≤N≤4,
- wherein, in the time domain, the EPDCCH UE-specific search space is located in at least one OFDM symbol after the N OFDM symbols in the subframe, and
- wherein the advanced UE receives a signal in the EPDCCH UE-specific search space using a reference signal which is not used by the legacy UE in the PDCCH UE-specific search space.
Dependencies are inferred from the claim text.