Beam management of downlink data channel and downlink control channel for 5G next radio systems

Patent metadata

Field	Value
Publication number	US-10148337-B2
Application number	US-201815877185-A
Country	US
Kind code	B2
Filing date	Jan 22, 2018
Priority date	Feb 1, 2017
Publication date	Dec 4, 2018
Grant date	Dec 4, 2018

Abstract

A method of a user equipment (UE) for beam management in a wireless communication system is provided. The method comprises receiving, from a base station (BS), a radio resource control (RRC) signaling and a medium access control channel element (MAC CE) signaling including a beam indicator over a downlink channel for the beam management, identifying the beam indicator based on the RRC signaling and the MAC CE signaling, and determining the beam indicator for a physical downlink control channel (PDCCH), a common physical downlink shared channel (PDSCH), and a fallback unicast PDSCH.

First claim

What is claimed is:

1. A user equipment (UE) for beam management in a wireless communication system, the UE comprising:
a transceiver configured to receive, from a base station (BS), a radio resource control (RRC) signaling and a medium access control channel element (MAC CE) signaling including a beam indicator over a downlink channel for the beam management; and
a processor configured to:
identify the beam indicator based on the RRC signaling and the MAC CE signaling; and
determine the beam indicator for a physical downlink control channel (PDCCH), a common physical downlink shared channel (PDSCH), and a fallback unicast PDSCH.

2. The UE of claim 1 , wherein:
the transceiver is further configure to receive, from the BS, the RRC signaling, the MAC CE signaling, and downlink control information (DCI) signaling over the downlink channel for the beam management, and
the processor is further configured to:
identify the beam indicator based on the RRC signaling, the MAC CE signaling, and the DCI signaling; and
determine the beam indicator for a non-fallback unicast PDSCH.

3. The UE of claim 1 , wherein:
the processor is further configured to determine a beam management reference signal (RS) for a common PDSCH and common PDCCH based on a synchronization block (SS-block), and
the PDSCH includes at least one of random access responses (RARs), paging, or system information blocks (SIBs).

4. The UE of claim 1 , wherein:
the transceiver is further configure to receive, from the BS, a beam management RS; and
the processor is further configured to determine a beam management RS for a fallback unicast PDSCH and a fallback unicast PDCCH based on at least one of an SS-block or a UE-specific persistent/semi-persistent channel state information-reference signal (P/SP CSI-RS); and the transceiver is further configured to transmit, to the BS, an uplink signal including a measurement result of the beam management RS.

5. The UE of claim 1 , wherein:
the processor is further configured to identify a set of reference signal (RS) resources in the RRC signaling, and
the set of RS references includes at least one resource and port that are a quasi co-location (QCL) reference for receiving at least one of a data or control channel.

6. The UE of claim 5 , wherein the set of RS references is down-selected by a MAC CE signaling transmitted by the BS.

7. The UE of claim 1 , wherein:
the MAC CE signaling is used to indicate an identifier, and
the identifier indicates whether a beam management RS is activated or deactivated.

8. A base station (BS) for beam management in a wireless communication system, the BS comprising:
a processor configured to:
determine a beam indicator for a physical downlink control channel (PDCCH), a common physical downlink shared channel (PDSCH), and a fallback unicast PDSCH; and
configure the beam indicator based on a radio resource control (RRC) signaling and a medium access control channel element (MAC CE) signaling; and

a transceiver configured to transmit, to a user equipment (UE), the RRC signaling and the MAC CE signaling including the beam indicator over a downlink channel for the beam management.

9. The BS of claim 8 , wherein:
the processor is further configured to:
determine the beam indicator for a non-fallback unicast PDSCH; and
configure the beam indicator based on the RRC signaling, the MAC CE signaling, and a downlink control information (DCI) signaling; and

the transceiver is further configure to transmit, to the UE, the RRC signaling, the MAC CE signaling, and the DCI signaling over the downlink channel for the beam management.

10. The BS of claim 8 , wherein:
the processor is further configured to determine a beam management reference signal (RS) for a common PDSCH and common PDCCH based on a synchronization block (SS-block), and
the PDSCH includes at least one of random access responses (RARs), paging, or system information blocks (SIBs).

11. The BS of claim 8 , wherein:
the processor is further configured to determine a beam management RS for a fallback unicast PDSCH and a fallback unicast PDCCH based on at least one of an SS-block or a UE-specific persistent/semi-persistent channel state information-reference signal (P/SP CSI-RS); and
the transceiver is further configured to:
transmit, to the UE, the beam management RS; and
receive, from the UE, an uplink signal including a measurement result of the beam management RS.

12. The BS of claim 8 , wherein:
the processor is further configured to configure a set of reference signal (RS) resources in the RRC signaling, and
the set of RS references includes at least one resource and port that are a quasi co-location (QCL) reference for receiving at least one of a data or control channel.

13. The BS of claim 12 , wherein the set of RS references is down-selected by a MAC CE signaling transmitted by the BS.

14. The BS of claim 8 , wherein:
the MAC CE signaling is used to indicate an identifier, and
the identifier indicates whether a beam management RS is activated or deactivated.

15. A method of a user equipment (UE) for beam management in a wireless communication system, the method comprising:
receiving, from a base station (BS), a radio resource control (RRC) signaling and a medium access control channel element (MAC CE) signaling including a beam indicator over a downlink channel for the beam management;
identifying the beam indicator based on the RRC signaling and the MAC CE signaling; and
determining the beam indicator for a physical downlink control channel (PDCCH), a common physical downlink shared channel (PDSCH), and a fallback unicast PDSCH.

16. The method of claim 15 , further comprising:
receiving, from the BS, the RRC signaling, the MAC CE signaling, and downlink control information (DCI) signaling over the downlink channel for the beam management;
identifying the beam indicator based on the RRC signaling, the MAC CE signaling, and the DCI signaling; and
determining the beam indicator for a non-fallback unicast PDSCH.

17. The method of claim 15 , further comprising:
determining a beam management reference signal (RS) for a common PDSCH and common PDCCH based on a synchronization block (SS-block), wherein the PDSCH includes at least one of random access responses (RARs), paging, or system information blocks (SIBs).

18. The method of claim 15 , further comprising:
receiving, from the BS, a beam management RS; and
determining a beam management RS for a fallback unicast PDSCH and a fallback unicast PDCCH based on at least one of an SS-block or a UE-specific persistent/semi-persistent channel state information-reference signal (P/SP CSI-RS); and
transmitting, to the BS, an uplink signal including a measurement result of the beam management RS.

19. The method of claim 15 , further comprising:
identifying a set of reference signal (RS) resources in the RRC signaling, wherein the set of RS references includes at least one resource and port that are a quasi co-location (QCL) reference for receiving at least one of a data or control channel, and wherein the set of RS references is down-selected by a MAC CE signaling transmitted by the BS.

20. The method of claim 15 , wherein the MAC CE signaling is used to indicate an identifier, and wherein the identifier indicates whether a beam management RS is activated or deactivated.

Assignees

• Samsung Electronics Co Ltd

Inventors

• Ng Boon Loong
• Chandrasekhar Vikram
• Nam Young-Han
• Kim Jaewon

Classifications

• H04W72/23

  in the downlink direction of a wireless link, i.e. towards a terminal · CPC title

• H04L1/06

  using space diversity · CPC title

• H04L5/0053

  Allocation of signalling, i.e. of overhead other than pilot signals · CPC title

• H04L5/0048

  Allocation of pilot signals, i.e. of signals known to the receiver (allocation of control signalling H04L5/0053; use of control signalling H04L5/0091) · CPC title

• H04L1/0026

  Transmission of channel quality indication · CPC title