COORDINATED MULTIPOINT CONFIGURATION BASED ON CHANNEL STATE INFORMATION REFERENCE SIGNALS

• US 20130196699A1
• Filed: 06/27/2012
• Published: 08/01/2013
• Est. Priority Date: 01/27/2012
• Status: Active Grant

• Current Assignee: Apple Inc.
• Original Assignee: Intel Corporation
• Inventors: Davydov, Alexei, Sergeyev, Vadim, Morozov, Gregory, Maltsev, Alexander, Bolotin, Ilya
• Granted Patent: US 8,843,100 B2
• Time in Patent Office: Days
• US Class Current: 455/500
• CPC Class Codes: H04B 1/69 Spread spectrum techniques
• 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 7/0413 MIMO systems
• CPC Class Codes: H04B 7/0456 Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
• CPC Class Codes: H04B 7/0617 for beam forming
• CPC Class Codes: H04B 7/0623 Auxiliary parameters, e.g. power control [PCB] or not acknowledged commands [NACK], used as feedback information
• CPC Class Codes: H04B 7/0626 Channel coefficients, e.g. channel state information [CSI]
• 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 1/0027 Scheduling of signalling, e.g. occurrence thereof
• CPC Class Codes: H04L 1/0031 Multiple signaling transmission H04L1/1664, F15 take precedence
• CPC Class Codes: H04L 1/1864 ARQ related signaling H04L1/1607 takes precedence
• CPC Class Codes: H04L 1/1887 Scheduling and prioritising arrangements
• CPC Class Codes: H04L 1/1896 ARQ related signaling
• CPC Class Codes: H04L 12/189 in combination with wireless systems selective distribution or broadcast in wireless communication networks H04W4/06
• CPC Class Codes: H04L 27/2607 Cyclic extensions
• 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 5/005 of common pilots, i.e. pilots destined for multiple users or terminals
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/1469 : using time-sharing
• CPC Class Codes: H04L 65/611 : for multicast or broadcast systems for broadcast or conference H04L12/18; arrangements for broadcast or distribution combined with broadcast H04H20/00; arrangements for broadcast applications with a direct linkage to broadcast information or to broadcast space-time H04H60/00; selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS], H04W4/06
• CPC Class Codes: H04L 65/65 : Network streaming protocols, e.g. real-time transport protocol [RTP] or real-time control protocol [RTCP]
• CPC Class Codes: H04W 36/0094 : Definition of hand-off measurement parameters
• CPC Class Codes: H04W 36/04 : Reselecting a cell layer in multi-layered cells
• CPC Class Codes: H04W 4/08 : User group management
• CPC Class Codes: H04W 4/70 : Services for machine-to-machine communication [M2M] or machine type communication [MTC]
• CPC Class Codes: H04W 48/16 : Discovering, processing access restriction or access information
• CPC Class Codes: H04W 52/0216 : using a pre-established activity schedule, e.g. traffic indication frame
• CPC Class Codes: H04W 72/04 : Wireless resource allocation
• CPC Class Codes: H04W 72/044 : based on the type of the allocated resource
• CPC Class Codes: H04W 72/20 : Control channels or signalling for resource management
• CPC Class Codes: H04W 72/23 : in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 72/53 : based on regulatory allocation policies
• CPC Class Codes: H04W 72/541 : using the level of interference
• CPC Class Codes: H04W 72/542 : using measured or perceived quality
• CPC Class Codes: H04W 76/27 : Transitions between radio resource control [RRC] states
• CPC Class Codes: H04W 76/28 : Discontinuous transmission [DTX]; Discontinuous reception [DRX]
• 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 configuring coordinated multipoint (CoMP) for network devices. In various embodiments, configuration of the CoMP may be based on channel state information reference signals. Other embodiments may be described and/or claimed.

Claims

1. An apparatus comprising:

measurement feedback circuitry configured to receive a boundary metric from a user equipment (UE), wherein the boundary metric is based on UE measurements of one or more channel state information—

reference signals (CSI-RSs) and indicates a proximity of the UE to a boundary of a coordinated multipoint (CoMP) cluster; and

CoMP control circuitry configured to determine a CoMP configuration for the UE based on the boundary metric.

2. The apparatus of claim 1, wherein the CoMP control circuitry is configured to determine the CoMP configuration for the UE by being further configured to:

select, from a plurality of nodes of a CoMP management set, at least one node to be included in a CoMP measurement set.

3. The apparatus of claim 2, wherein the CoMP control circuitry is further configured to transmit an indication of the CoMP measurement set to the UE.

4. The apparatus of claim 1, wherein the CoMP control circuitry is further configured to select individual CoMP measurement sets for individual UEs communicatively associated with the apparatus.

5. The apparatus of claim 1, wherein the boundary metric comprises a reference signal received quality (RSRQ) value.

6. The apparatus of claim 5, wherein the RSRQ is a ratio of a reference signal received power (RSRP) value to a receive strength signal indicator (RSSI) value.

7. The apparatus of claim 6, wherein the RSRP value and the RSSI value are CSI-RS-based metrics.

8. The apparatus of claim 6, wherein the RSRP value and the RSSI value are based on long-term measurements.

9. The apparatus of claim 1, wherein the boundary metric is a signal to interference plus noise ratio (SINR) value.

10. The apparatus of claim 9, wherein the SINR value is a ratio of a reference signal received power (RSRP) value to a noise value that corresponds to noise generated from communication points external to the CoMP cluster,

wherein the RSRP value is based on the one or more CSI-RSs.

11. The apparatus of claim 1, wherein the CoMP control circuitry is configured to:

compare the boundary metric to a predetermined threshold; and

either enable or disable CoMP service for the UE based on comparison of the boundary metric to the predetermined threshold.

12. The apparatus of claim 1, wherein the CoMP control circuitry is configured to:

compare the boundary metric to a predetermined threshold; and

either enable or disable inter-CoMP-cluster coordination based on comparison of the boundary metric to the predetermined threshold.

25. The apparatus of claim 12, wherein the CoMP control circuitry is disposed in an enhanced node base station.

26. The apparatus of claim 12, wherein the apparatus comprises a user equipment that further comprises:

a touchscreen user interface.

13. An apparatus comprising:

measurement circuitry configured to;

receive one or more one or more channel state information—

reference signals (CSI-RSs); and

determine, based on at least one of the one or more CSI-RSs, a boundary metric to indicate a proximity of an apparatus to a boundary of a coordinated multipoint (CoMP) cluster; and

feedback circuitry coupled with the measurement circuitry and configured to transmit the boundary metric to a CoMP control circuitry.

14. The apparatus of claim 13, wherein the measurement circuitry is further configured to:

determine the boundary metric as a reference signal received quality (RSRQ) value.

15. The apparatus of claim 14, wherein the measurement circuitry is further configured to:

determine a reference signal received power (RSRP) value and a receive strength signal indicator (RSSI) value based on the one or more CSI-RSs; and

determine the RSRQ value as a ratio of the RSRP value to the RSSI value.

16. The apparatus of claim 13, wherein the measurement circuitry is further configured to:

determine the boundary metric as a signal to interference plus noise ratio (SINR) value.

17. The apparatus of claim 16, wherein the measurement circuitry is further configured to:

determine a reference signal received power (RSRP) value based on the one or more CSI-RSs;

determine a noise value corresponding to noise generated from communication points external to the CoMP cluster; and

determine the SINR value as a ratio of the RSRP value to the noise value.

18. The apparatus of claim 17, wherein the measurement circuitry is configured to determine the noise value by being configured to:

measure noise on one or more muted resource elements of a physical downlink shared channel.

19. The apparatus of claim 13, wherein the measurement circuitry is further configured to:

receive CSI-RSs from individual communication points of a CoMP measurement set; and

determine individual boundary metrics that correspond to the CSI-RSs received from the individual communication points.

20. The apparatus of claim 19, wherein the measurement circuitry is further configured to:

determine the boundary metric based on the individual boundary metrics.

21. The apparatus of claim 19, wherein the boundary metric is one of the individual boundary metrics and the feedback circuitry is further configured to:

transmit the individual boundary metrics to the CoMP control circuitry.

22. The apparatus of claim 13, wherein the feedback circuitry is further configured to:

detect an occurrence of an event; and

transmit the boundary metric based on said detection of the occurrence.

23. The apparatus of claim 22, wherein the event includes the boundary metric being greater than a predetermined value.

24. The apparatus of claim 22, wherein the event includes the boundary metric being within a predetermined range from a reference boundary metric.

27. An article of manufacture comprising instructions stored in one or more storage media, wherein the instructions, when executed, cause a user equipment to:

receive one or more one or more channel state information—

reference signals (CSI-RSs);

determine, based on at least one of the one or more CSI-RSs, a boundary metric corresponding to the user equipment;

detect an occurrence of an event; and

transmit the boundary metric to an enhanced node base station based on detection of the occurrence.

28. The article of manufacture of claim 27, wherein the instructions, when executed, further cause the user equipment to:

determine the boundary metric as a reference signal received quality (RSRQ) value.

29. The article of manufacture of claim 28, wherein the instructions, when executed, further cause the user equipment to:

determine a reference signal received power (RSRP) value and a receive strength signal indicator (RSSI) value based on the one or more CSI-RSs; and

determine the RSRQ value as a ratio of the RSRP value to the RSSI value.

30. The article of manufacture of claim 27, wherein the instructions, when executed, further cause the user equipment to:

determine a RSRP value based on the one or more CSI-RSs;

determine a noise value corresponding to noise generated from communication points external to the CoMP cluster; and

determine SINR value as a ratio of the RSRP value to the noise value.