Dynamic point selection via a coordinating set of base stations

• US 9,432,093 B2
• Filed: 03/09/2015
• Issued: 08/30/2016
• Est. Priority Date: 11/04/2011
• Status: Active Grant

• Current Assignee: Apple Inc.
• Original Assignee: Intel Corporation
• Inventors: Sirotkin, Alexander, Davydov, Alexei
• Primary Examiner(s): Abelson, Ronald B
• Application Number:
  US14/642,235
• Publication Number:
  US 20150180555A1
• Time in Patent Office: 540 Days
• Field of Search: 370230-231, 370/235, 370/236, 370/328, 370/329
• US Class Current: 1/1
• CPC Class Codes: H04B 7/024 Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
• CPC Class Codes: H04B 7/0626 Channel coefficients, e.g. channel state information [CSI]
• CPC Class Codes: H04B 7/063 Parameters other than those covered in groups H04B7/0623 - H04B7/0634, e.g. channel matrix rank or transmit mode selection
• CPC Class Codes: H04B 7/0639 Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam selection
• CPC Class Codes: H04L 1/0026 Transmission of channel quality indication
• CPC Class Codes: H04L 1/1812 Hybrid protocols; Hybrid automatic repeat request [HARQ]
• CPC Class Codes: H04L 69/324 in the data link layer [OSI layer 2], e.g. HDLC
• CPC Class Codes: H04W 72/12 Wireless traffic scheduling
• CPC Class Codes: H04W 72/27 between access points

Abstract

Examples are disclosed for coordinating transmission of one or more protocol data units to a wireless device from a coordinating set of base stations. In some examples, coordinating may include exchanging information via a backhaul communication channel coupling or interconnecting the base stations included in the coordinating set of base stations. For these examples, one or more protocol data units may be transmitted to the wireless device from the coordinating set of base stations via a plurality of separate communication links based on the exchanged information. Other examples are described and claimed.

Claims

1. An evolved node B (eNB), comprising:

logic, at least a portion of which is in hardware, the logic to receive measurement information indicating an ability of a user equipment (UE) to receive protocol data units (PDUs) via coordinated transmissions of multiple eNBs and send an X2 message over an X2 communication channel to coordinate transmission of a plurality of PDUs comprising data for the UE according to a coordinated multipoint (CoMP) scheme, the X2 message to comprise CoMP scheduling information to indicate a schedule for transmission of a first set of one or more of the plurality of PDUs according to the CoMP scheme, the logic to receive hybrid automatic repeat request (HARQ) information for the plurality of PDUs and send HARQ coordination information over the X2 communication channel based on the received HARQ information; and

a transmitter to transmit a second set of one or more of the plurality of PDUs according to the CoMP scheme.

2. The eNB of claim 1, the HARQ coordination information to indicate a respective acknowledgment (ACK) or negative acknowledgement (NACK) for each of the first set of PDUs.

3. The eNB of claim 1, the HARQ coordination information to identify one or more PDUs to be retransmitted from among the first set of PDUs.

4. The eNB of claim 1, the HARQ coordination information to comprise a HARQ process identification (ID).

5. The eNB of claim 1, the logic to retransmit one or more of the first set of PDUs in response to receipt of the HARQ information.

6. The eNB of claim 1, the X2 message to comprise one or more General Packet Radio Service (GPRS) tunneling protocol user-plane (GTP-u) sequence numbers.

7. The eNB of claim 1, the X2 message to comprise a precoding matrix indicator (PMI) for use in conjunction with transmission of the first set of PDUs.

8. The eNB of claim 1, comprising at least one processor circuit and at least one memory.

9. An evolved node B (eNB), comprising:

at least one radio frequency (RF) transceiver; and

logic, at least a portion of which is in hardware, the logic to receive a first X2 message via an X2 interface, the first X2 message to indicate a schedule for transmission of a set of one or more protocol data units (PDUs) according to a coordinated multipoint (CoMP) scheme, the logic to cause transmission of the set of PDUs according to the indicated schedule and receive a second X2 message via the X2 interface, the second X2 message to comprise hybrid automatic repeat request (HARQ) information for the set of PDUs, the logic to determine whether to retransmit one or more of the set of PDUs based on the HARQ information.

10. The eNB of claim 9, the first X2 message to comprise one or more General Packet Radio Service (GPRS) tunneling protocol user-plane (GTP-u) sequence numbers.

11. The eNB of claim 9, the logic to cause transmission of the set of PDUs using a precoding matrix indicator (PMI) comprised in the first X2 message.

12. The eNB of claim 9, the logic to cause transmission of at least one of the set of PDUs during a subframe identified by a subframe index comprise in the first X2 message.

13. The eNB of claim 9, the HARQ information to indicate a respective acknowledgment (ACK) or negative acknowledgement (NACK) for each of the set of PDUs.

14. The eNB of claim 13, the logic to determine to retransmit one or more of the set of PDUs in response to a determination that the HARQ information indicates a respective NACK for each of the one or more PDUs.

15. The eNB of claim 9, the HARQ information to comprise a HARQ process identification (ID).

16. The eNB of claim 9, the CoMP scheme to comprise a dynamic point selection (DPS) CoMP scheme.

17. At least one non-transitory computer-readable storage medium comprising a set of instructions that, in response to being executed at an evolved node B (eNB), cause the eNB to:

send a first X2 interface message, the first X2 message to comprise CoMP scheduling information to indicate a schedule for transmission of a first set of one or more protocol data units (PDUs) according to a dynamic point selection (DPS) coordinated multipoint (CoMP) scheme;

transmit a second set of one or more PDUs according to the DPS CoMP scheme;

receive hybrid automatic repeat request (HARQ) information for the first set of PDUs and the second set of PDUs; and

send a second X2 interface message comprising HARQ coordination information based on the HARQ information for the first set of PDUs.

18. The at least one non-transitory computer-readable storage medium of claim 17, comprising instructions that, in response to being executed at the eNB, cause the eNB to transmit the second set of PDUs over a physical downlink shared channel (PDSCH).

19. The at least one non-transitory computer-readable storage medium of claim 17, the first X2 interface message to comprise a precoding matrix indicator (PMI) for use in conjunction with transmission of the first set of PDUs.

20. The at least one non-transitory computer-readable storage medium of claim 17, the first X2 interface message to comprise one or more General Packet Radio Service (GPRS) tunneling protocol user-plane (GTP-u) sequence numbers.

21. The at least one non-transitory computer-readable storage medium of claim 17, the HARQ coordination information to indicate a respective acknowledgment (ACK) or negative acknowledgement (NACK) for each of the first set of PDUs.

22. The at least one non-transitory computer-readable storage medium of claim 17, the HARQ coordination information to identify one or more PDUs to be retransmitted from among the first set of PDUs.

23. The at least one non-transitory computer-readable storage medium of claim 17, the HARQ coordination information to comprise a HARQ process identification (ID).

24. The at least one non-transitory computer-readable storage medium of claim 17, comprising instructions that, in response to being executed at the eNB, cause the eNB to retransmit one or more of the first set of PDUs based on the HARQ information for the first set of PDUs.