Transmission point indication in coordinated multi-point system

• US 10,164,755 B2
• Filed: 07/10/2017
• Issued: 12/25/2018
• Est. Priority Date: 11/04/2011
• Status: Active Grant

• Current Assignee: Apple Inc.
• Original Assignee: Intel Corporation
• Inventors: Davydov, Alexei Vladimirovich, Morozov, Gregory Vladimirovich, Maltsev, Alexander Alexandrovich, Bolotin, Ilya Alexandrovich, Sergeyev, Vadim Sergeyevich
• Primary Examiner(s): Acolatse, Kodzovi
• Application Number:
  US15/645,888
• Publication Number:
  US 20170310524A1
• Time in Patent Office: 533 Days
• Field of Search: None
• 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 7/0456 Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
• CPC Class Codes: H04B 7/0626 Channel coefficients, e.g. channel state information [CSI]
• CPC Class Codes: H04J 11/00 Orthogonal multiplex systems, e.g. using WALSH codesH04J13/00 takes precedence
• CPC Class Codes: H04J 3/12 Arrangements providing for calling or supervisory signals
• CPC Class Codes: H04L 1/0026 Transmission of channel quality indication
• CPC Class Codes: H04L 1/0077 Cooperative coding
• CPC Class Codes: H04L 1/1812 Hybrid protocols; Hybrid automatic repeat request [HARQ]
• CPC Class Codes: H04L 27/2646 using feedback from receiver for adjusting OFDM transmission parameters, e.g. transmission timing or guard interval length
• CPC Class Codes: H04L 27/2662 Symbol synchronisation
• CPC Class Codes: H04L 27/2675 Pilot or known symbols
• CPC Class Codes: H04L 5/0035 Resource allocation in a cooperative multipoint environment
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/0055 Physical resource allocation for ACK/NACK for physical mapping arrangements in ARQ protocols H04L1/1861
• CPC Class Codes: H04L 5/0078 Timing of allocation
• CPC Class Codes: H04L 5/14 Two-way operation using the same type of signal, i.e. duplex
• CPC Class Codes: H04W 24/02 Arrangements for optimising operational condition
• CPC Class Codes: H04W 4/06 Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
• CPC Class Codes: H04W 4/70 Services for machine-to-machine communication [M2M] or machine type communication [MTC]
• CPC Class Codes: H04W 52/0206 in access points, e.g. base stations access point devices per se H04W88/08
• CPC Class Codes: H04W 52/146 : Uplink power control
• CPC Class Codes: H04W 52/242 : taking into account path loss
• CPC Class Codes: H04W 52/244 : Interferences in heterogeneous networks, e.g. among macro and femto or pico cells or other sector / system interference [OSI]
• CPC Class Codes: H04W 52/34 : TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading
• CPC Class Codes: H04W 56/0015 : one node acting as a reference for the others
• CPC Class Codes: H04W 68/02 : Arrangements for increasing efficiency of notification or paging channel
• CPC Class Codes: H04W 72/02 : Selection of wireless resources by user or terminal
• CPC Class Codes: H04W 72/0446 : Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/12 : Wireless traffic scheduling
• CPC Class Codes: H04W 72/21 : in the uplink direction of a wireless link, i.e. towards the network
• CPC Class Codes: H04W 72/23 : in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 72/542 : using measured or perceived quality
• CPC Class Codes: H04W 76/11 : Allocation or use of connection identifiers
• CPC Class Codes: H04W 76/40 : for selective distribution or broadcast
• CPC Class Codes: H04W 84/14 : WLL [Wireless Local Loop]; RLL [Radio Local Loop]
• CPC Class Codes: H04W 88/02 : Terminal devices
• CPC Class Codes: H04W 88/08 : Access point devices
• CPC Class Codes: Y02D 30/70 : in wireless communication networks

Abstract

Embodiments of the present disclosure describe devices, methods, computer-readable media and systems configurations for transmission point indication in a coordinated multipoint (CoMP) system. A user equipment (UE) may receive common reference signal (CRS) parameters associated with individual base stations of a CoMP measurement set. The UE may also receive a transmission point index corresponding to a first base station of the CoMP measurement set that is scheduled for communications with the UE. A mapping module of the UE may produce a physical downlink shared channel (PDSCH) mapping pattern based on the CRS parameters associated with the scheduled base station.

Claims

1. A user equipment (UE) comprising:

communications circuitry to;

receive, via radio resource control (RRC) signaling from a first transmission point, a plurality of individual common reference signal (CRS) parameter sets;

receive a physical downlink control channel (PDCCH) that includes a 2-bit value to indicate one of the individual CRS parameter sets that is to be used by the UE to decode a physical downlink shared channel (PDSCH), wherein the PDCCH is received from a second transmission point that is different from the first transmission point, and wherein the PDSCH is to be transmitted by the second transmission point; and

mapping circuitry coupled to the communications circuitry, the mapping circuitry to;

identify the indicated individual CRS parameter set, from the plurality of individual CRS parameter sets, based on the 2-bit value; and

decode the PDSCH transmitted by the second transmission point based on the identified individual CRS parameter set.

2. The UE of claim 1, wherein the mapping circuitry is further to determine a PDSCH resource element (RE) mapping pattern based on the identified individual parameter set, and wherein the PDSCH is decoded based on the PDSCH RE mapping pattern.

3. The UE of claim 1, wherein the individual CRS parameter sets of the plurality of CRS parameter sets include a number of CRS antenna ports and a CRS frequency shift.

4. The UE of claim 3, wherein the individual CRS parameter sets further include information related to a quantity or location of REs that are dedicated to multicast/broadcast single frequency network (MBSFN) information.

5. The UE of claim 4, wherein the individual CRS parameter sets further include one or more channel state information reference signal (CSI-RS) parameters.

6. The UE of claim 3, wherein the individual CRS parameter sets further include a transmission point index, and wherein the 2-bit value corresponds to the transmission point index of the indicated individual parameter set.

7. The UE of claim 1, wherein the individual CRS parameter sets are associated with different transmission points of a Long Term Evolution (LTE) network that are included in a coordinated multipoint (CoMP) measurement set.

8. The UE of claim 1, wherein the 2-bit value is included in downlink control information (DCI) of the PDCCH, and wherein the PDCCH is detected after the receipt of the plurality of parameter sets via the RRC signaling.

9. One or more non-transitory computer-readable media having instructions, stored thereon, that when executed cause an evolved Node B (eNB) to:

transmit, to a user equipment (UE), a physical downlink control channel (PDCCH) that includes a 2-bit value to indicate an individual common resource signal (CRS) parameter set from among a plurality of parameter sets that were transmitted to the UE by another eNB, wherein the indicated individual CRS parameter set is to be used by the UE to decode a physical downlink shared channel (PDSCH); and

transmit, to the UE, the PDSCH based on the indicated individual parameter set.

10. The one or more computer-readable media of claim 9, wherein, to transmit the PDSCH based on the indicated individual parameter set, the eNB is to provide the PDSCH with a PDSCH resource element (RE) mapping pattern according to the indicated individual parameter set.

11. The one or more computer-readable media of claim 9, wherein the individual parameter sets include a number of CRS antenna ports and a CRS frequency shift.

12. The one or more computer-readable media of claim 11, wherein the individual parameter sets further include information related to a quantity or location of REs that are dedicated to multicast/broadcast single frequency network (MBSFN) information.

13. The one or more computer-readable media of claim 11, wherein the individual parameter sets further include one or more channel state information reference signal (CSI-RS) parameters.

14. The one or more computer-readable media of claim 11, wherein the individual CRS parameter sets further include a transmission point index, and wherein the 2-bit value corresponds to the transmission point index of the indicated individual parameter set.

15. The one or more computer-readable media of claim 9, wherein the CRS parameter sets are associated with different transmission points of a Long Term Evolution (LTE) network.

16. The one or more computer-readable media of claim 9, wherein the 2-bit value is transmitted after the transmission of the plurality of CRS parameter sets.

17. An apparatus to be employed by a user equipment (UE), the apparatus comprising:

means for receiving, via radio resource control (RRC) signaling, a plurality of parameter sets, wherein individual parameter sets of the plurality of parameter sets include a number of common reference signal (CRS) antenna ports and a CRS frequency shift;

means for receiving, after the plurality of parameter sets are received, downlink control information (DCI) that includes a 2-bit value to indicate one of the individual parameter sets that is to be used by the UE to decode a physical downlink shared channel (PDSCH);

means for identifying the individual parameter set indicated by the 2-bit value; and

means for decoding the PDSCH based on the identified individual parameter set.

18. The apparatus of claim 17, further comprising means for determining a PDSCH resource element (RE) mapping pattern based on the identified individual parameter set, and wherein the means for decoding the PDSCH is to decode the PDSCH based further on the PDSCH RE mapping pattern.

19. The apparatus of claim 17, wherein the individual parameter sets further include:

information related to a quantity or location of REs that are dedicated to multicast/broadcast single frequency network (MBSFN) information; and

one or more channel state information reference signal (CSI-RS) parameters.

20. The apparatus of claim 17, wherein the individual parameter sets further include a transmission point index, and wherein the 2-bit value corresponds to the transmission point index of the indicated individual parameter set.

21. The apparatus of claim 17, wherein the means for receiving the plurality of parameter sets is to receive the plurality of parameter sets from a first transmission point and wherein the means for receiving the DCI is to receive the DCI from a second transmission point that is different from the first transmission point.

22. An apparatus to be employed by an evolved Node B (eNB), the apparatus comprising:

means for transmitting, to a user equipment (UE) via radio resource control (RRC) signaling, a plurality of parameter sets, wherein individual parameter sets of the plurality of parameter sets include a number of common reference signal (CRS) antenna ports, a CRS frequency shift, and a transmission point index;

means for transmitting, after the plurality of parameter sets are transmitted, downlink control information (DCI) that includes a 2-bit value that corresponds to the transmission point index of one of the individual parameter sets to indicate that the individual parameter set is to be used by the UE to decode a physical downlink shared channel (PDSCH); and

means for modulating the PDSCH based on the indicated individual parameter set.

23. The apparatus of claim 22, further comprising means for determining a PDSCH resource element (RE) mapping pattern based on the indicated individual parameter set, and wherein the means for modulating the PDSCH is to modulate the PDSCH based further on the PDSCH RE mapping pattern.

24. The apparatus of claim 22, wherein the individual parameter sets further include:

information related to a quantity or location of REs that are dedicated to multicast/broadcast single frequency network (MBSFN) information; and

one or more channel state information reference signal (CSI-RS) parameters.

25. The apparatus of claim 22, wherein the parameter sets are associated with different transmission points of a Long Term Evolution (LTE) network.