Transmission point indication in coordinated multi-point system

• US 9,320,015 B2
• Filed: 03/29/2012
• Issued: 04/19/2016
• 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:
  US13/997,588
• Publication Number:
  US 20140003324A1
• Time in Patent Office: 1,482 Days
• Field of Search: None
• 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 7/0456 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. An apparatus to be employed by a user equipment (UE), the apparatus comprising:

communications circuitry to;

receive, via radio resource control (RRC) signaling, common reference signal (CRS) parameters associated with individual evolved Node Bs (eNBs) of a coordinated multipoint (CoMP) measurement set including a plurality of eNBs, wherein the CRS parameters include a number of CRS antenna ports, a CRS frequency shift, and a transmission point index of the individual eNBs; and

receive a downlink control information (DCI) message including a transmission point index corresponding to a first eNB of the CoMP measurement set; and

mapping circuitry coupled with the communications circuitry, the mapping circuitry to produce a physical downlink shared channel (PDSCH) mapping pattern based on the received CRS parameters associated with the first eNB;

wherein the CRS parameters are received from a second eNB of the CoMP measurement set, and wherein the DCI message is received from the first or second eNB.

2. The apparatus of claim 1, wherein the communications circuitry is further to use the CRS parameters associated with the first eNB for subsequent communications with the first eNB.

3. The apparatus of claim 1, wherein the CRS parameters further include information related to orthogonal frequency division multiplexing (OFDM) resource elements dedicated to control information for the individual eNBs.

4. The apparatus of claim 1, wherein the CRS parameters further include multicast/broadcast single frequency network (MBSFN) information for the individual eNBs of the CoMP measurement set.

5. The apparatus of claim 1, wherein the communications circuitry is further to receive a transmission from the first eNB, the transmission including an orthogonal frequency division multiplexing (OFDM) frame having a plurality of CRSs, wherein the CRSs are arranged within the frame according to the PDSCH mapping pattern.

6. The apparatus of claim 1, wherein the CRS parameters are received as part of a configuration protocol for the CoMP measurement set, wherein the configuration protocol further includes configuring channel state information reference signal (CSI-RS) parameters and uplink control channel parameters for communications between the apparatus and one or more eNBs of the CoMP measurement set.

7. The apparatus of claim 1, further comprising memory configured to store the received CRS parameters.

8. An apparatus to be employed by a serving evolved Node B (eNB), the apparatus including:

communications circuitry; and

coordinated multipoint (CoMP) management circuitry coupled to the communications circuitry, the CoMP management circuitry to;

transmit, to a user equipment (UE) via the communications circuitry using radio resource control (RRC) signaling, common reference signal (CRS) parameters associated with individual eNBs of a CoMP measurement set including a plurality of eNBs, wherein the plurality of eNBs in the CoMP measurement set include the serving eNB and a first eNB, wherein the eNBs of the CoMP measurement set are associated with respective transmission point indexes, and wherein the CRS parameters include a number of CRS antenna ports, a CRS frequency shift of the individual eNBs and a transmission point index of the individual eNBs; and

transmit, to the UE via the communications circuitry, a downlink control information (DCI) message to indicate, based on a first transmission point index associated with the first eNB of the CoMP measurement set, that the first eNB is selected to communicate with the UE.

9. The apparatus of claim 8, wherein the serving eNB is to manage communications between the UE and the plurality of eNBs of the CoMP measurement set.

10. The apparatus of claim 8, wherein the CRS parameters are transmitted as part of a configuration protocol for the CoMP measurement set, wherein the configuration protocol further includes configuring channel state information reference signal (CSI-RS) parameters and uplink control channel parameters for communications between the UE and one or more eNBs of the CoMP measurement set.

11. A method, comprising:

receiving, by a user equipment (UE) via radio resource control (RRC) signaling, common reference signal (CRS) parameters associated with individual transmission points of a coordinated multipoint (CoMP) measurement set including a plurality of transmission points, wherein the CRS parameters include a number of CRS antenna ports, a CRS frequency shift, and a transmission point index of the individual transmission points;

receiving, by the UE via a downlink control information (DCI) transmission, a transmission point index corresponding to a first transmission point of the coordinated multipoint measurement set, wherein the CRS parameters are received from a second transmission point and the DCI transmission is received from the first transmission point or the second transmission point; and

determining a physical downlink shared channel (PDSCH) mapping pattern based on the CRS parameters associated with the first transmission point.

12. The method of claim 11, further comprising receiving, by the UE, a transmission from the first transmission point, wherein the transmission includes an orthogonal frequency division multiplexing (OFDM) frame having a plurality of CRSs, wherein the CRSs are arranged within the frame according to the PDSCH mapping pattern.

13. One or more non-transitory computer-readable media having instructions, stored thereon, that, when executed case a user equipment to:

obtain, via radio resource control (RRC) signaling, common reference signal (CRS) parameters associated with individual transmission points of a coordinated multipoint (CoMP) measurement set including a plurality of transmission points, the CRS parameters including a number of CRS antenna ports, a CRS frequency shift, and a transmission point index of the individual transmission points;

obtain, via a downlink control information (DCI) message, a transmission point index corresponding to a first transmission point of the coordinated multipoint measurement set, wherein the CRS parameters are obtained from a second transmission point and the DCI message is obtained from the first transmission point or the second transmission point; and

determine a physical downlink shared channel (PDSCH) mapping pattern based on the CRS parameters associated with the first transmission point.

14. The one or more non-transitory computer-readable media of claim 13, wherein the instructions, when executed, further cause the user equipment to:

receive a transmission from the first transmission point, wherein the transmission includes an orthogonal frequency division multiplexing (OFDM) frame having a plurality of CRSs, wherein the CRSs are arranged within the frame according to the PDSCH mapping pattern.