Apparatus and method for transmitting/receiving downlink data channel signal transmission information in cellular radio communication system using cooperative multi-point scheme

• US 10,631,286 B2
• Filed: 11/08/2019
• Issued: 04/21/2020
• Est. Priority Date: 01/11/2012
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Lee, Hyo-Jin, Kim, Youn-Sun, Kim, Ki-Il, Ji, Hyoung-Ju, Cho, Joon-Young, Lee, Ju-Ho
• Primary Examiner(s): Brandt, Christopher M
• Application Number:
  US16/678,426
• Publication Number:
  US 20200077372A1
• Time in Patent Office: 165 Days
• CPC Class Codes: H04L 5/0007 the frequencies being orthogonal, e.g. OFDM(A), DMT
• CPC Class Codes: H04L 5/003 Arrangements for allocating sub-channels of the transmission path
• CPC Class Codes: H04L 5/0035 Resource allocation in a cooperative multipoint environment
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• CPC Class Codes: H04L 5/0073 Allocation arrangements that take into account other cell interferences for intercell interference mitigation or co-ordination in orthogonal multiplex systems H04J11/005
• CPC Class Codes: H04W 72/04 Wireless resource allocation
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal

Abstract

An apparatus and a method for transmitting/receiving downlink data channel signal transmission information in a cellular radio communication system using a Cooperative Multi-Point (CoMP) scheme are provided. In the downlink data channel signal transmission information transmission method, a Base Station (BS) transmits downlink data channel signal transmission information including information related to Resource Elements (REs) scheduled for a downlink data channel signal transmission to a User Equipment (UE), and transmits downlink data channel signal non-transmission information including information related to REs through which a downlink data channel signal is not transmitted among the REs scheduled for the downlink data channel signal transmission to the UE.

Claims

1. A method performed by a terminal in a wireless communication system, the method comprising:

receiving, from a base station, configuration information including first information related to resources not available for a physical downlink shared channel (PDSCH) in a serving cell and second information related to one or more starting symbols associated with transmissions on the PDSCH, using radio resource control (RRC) signaling;

receiving, from the base station, control information for scheduling transmission on the PDSCH through a physical downlink control channel (PDCCH), the control information including third information for identifying a starting symbol among the one or more starting symbols; and

receiving, from the base station, downlink data on resources associated with the PDSCH based on the first information and the starting symbol.

2. The method of claim 1,

wherein the configuration information further includes fourth information on at least two scrambling identities for a demodulation reference signal (DMRS) related to the PDSCH, and

wherein the control information further includes fifth information for identifying a scrambling identity from among the at least two scrambling identities.

3. The method of claim 2, further comprising:

identifying the scrambling identity from among the at least two scrambling identities based on the fifth information; and

identifying a sequence of the DMRS based on the scrambling identity.

4. The method of claim 1, wherein the first information includes information on a multimedia broadcast multicast service single frequency network (MBSFN) sub-frame configuration, a number of a cell-specific reference signal (CRS) ports, and information on CRS resource position.

5. The method of claim 1, wherein the configuration information further includes information on co-location between at least one downlink reference signal and a demodulation reference signal (DMRS) of the PDSCH, and information on resources of at least one channel state information reference signal (CSI-RS).

6. A method performed by a base station in a wireless communication system, the method comprising:

transmitting, to a terminal, configuration information including first information related to resources not available for a physical downlink shared channel (PDSCH) in a serving cell and second information related to one or more starting symbols associated with transmissions on the PDSCH, using radio resource control (RRC) signaling;

transmitting, to the terminal, control information for scheduling transmission on the PDSCH through a physical downlink control channel (PDCCH), the control information including third information for identifying a starting symbol among the one or more starting symbols; and

transmitting, to the terminal, downlink data on resources associated with the PDSCH based on the first information and the third information.

7. The method of claim 6,

wherein the configuration information further includes fourth information on at least two scrambling identities for a demodulation reference signal (DMRS) related to the PDSCH, and

wherein the control information further includes fifth information for identifying a scrambling identity from among the at least two scrambling identities.

8. The method of claim 7, further comprising:

identifying the scrambling identity from among the at least two scrambling identities based on the fifth information; and

identifying a sequence of the DMRS based on the scrambling identity.

9. The method of claim 6, wherein the first information includes information on a multimedia broadcast multicast service single frequency network (MBSFN) sub-frame configuration, a number of a cell-specific reference signal (CRS) ports, and information on CRS resource position.

10. The method of claim 6, wherein the configuration information further includes information on co-location between at least one downlink reference signal and a demodulation reference signal (DMRS) of the PDSCH, and information on resources of at least one channel state information reference signal (CSI-RS).

11. A terminal in a wireless communication system, the terminal comprising:

a transceiver; and

at least one processor configured to;

receive, from a base station via the transceiver, configuration information including first information related to resources not available for a physical downlink shared channel (PDSCH) in a serving cell and second information related to one or more starting symbols associated with transmissions on the PDSCH, using radio resource control (RRC) signaling,

receive, from the base station via the transceiver, control information for scheduling transmission on the PDSCH through a physical downlink control channel (PDCCH), the control information including third information for identifying a starting symbol among the one or more starting symbols, and

receive, from the base station via the transceiver, downlink data on resources associated with the PDSCH based on the first information and the starting symbol.

12. The terminal of claim 11,

wherein the configuration information further includes fourth information on at least two scrambling identities for a demodulation reference signal (DMRS) related to the PDSCH, and

wherein the control information further includes fifth information for identifying a scrambling identity from among the at least two scrambling identities.

13. The terminal of claim 12, wherein the at least one processor is further configured to:

identify the scrambling identity from among the at least two scrambling identities based on the fifth information, and

identify a sequence of the DMRS based on the scrambling identity.

14. The terminal of claim 11, wherein the first information includes information on a multimedia broadcast multicast service single frequency network (MBSFN) sub-frame configuration, a number of a cell-specific reference signal (CRS) ports, and information on CRS resource position.

15. The terminal of claim 11, wherein the configuration information further includes information on co-location between at least one downlink reference signal and a demodulation reference signal (DMRS) of the PDSCH, and information on resources of at least one channel state information reference signal (CSI-RS).

16. A base station in a wireless communication system, the base station comprising:

a transceiver; and

at least one processor configured to;

transmit, to a terminal via the transceiver, configuration information including first information related to resources not available for a physical downlink shared channel (PDSCH) in a serving cell and second information related to one or more starting symbols associated with transmissions on the PDSCH, using radio resource control (RRC) signaling,

transmit, to the terminal via the transceiver, control information for scheduling transmission on the PDSCH through a physical downlink control channel (PDCCH), the control information including third information for identifying a starting symbol among the one or more starting symbols, and

transmit, to the terminal via the transceiver, downlink data on resources associated with the PDSCH based on the first information and the third information.

17. The base station of claim 16,

wherein the configuration information further includes fourth information on at least two scrambling identities for a demodulation reference signal (DMRS) related to the PDSCH, and

wherein the control information further includes fifth information for identifying a scrambling identity from among the at least two scrambling identities.

18. The base station of claim 17, wherein the at least one processor is further configured to:

identify the scrambling identity from among the at least two scrambling identities based on the fifth information, and

identify a sequence of the DMRS based on the scrambling identity.

19. The base station of claim 16, wherein the first information includes information on a multimedia broadcast multicast service single frequency network (MBSFN) sub-frame configuration, a number of a cell-specific reference signal (CRS) ports, and information on CRS resource position.

20. The base station of 16, wherein the configuration information further includes information on co-location between at least one downlink reference signal and a demodulation reference signal (DMRS) of the PDSCH, and information on resources of at least one channel state information reference signal (CSI-RS).