Method of enhanced interference measurements for channel state information (CSI) feedback

• US 9,781,638 B2
• Filed: 09/16/2013
• Issued: 10/03/2017
• Est. Priority Date: 09/28/2012
• Status: Active Grant

• Current Assignee: Apple Inc.
• Original Assignee: Intel Corporation
• Inventors: Davydov, Alexei, Morozov, Gregory, Han, Seunghee, Chatterjee, Debdeep, Bolotin, Ilya
• Primary Examiner(s): Jiang, Charles C
• Assistant Examiner(s): Lin, Will
• Application Number:
  US14/027,401
• Publication Number:
  US 20140092878A1
• Time in Patent Office: 1,478 Days
• Field of Search: 370252, 370336, 370329
• CPC Class Codes: H04B 17/318 Received signal strength
• CPC Class Codes: H04J 11/00 Orthogonal multiplex systems, e.g. using WALSH codesH04J13/00 takes precedence
• CPC Class Codes: H04J 11/0086 Search parameters, e.g. search strategy, accumulation length, range of search, thresholds code acquisition in DSSS H04B1/7075
• CPC Class Codes: H04J 3/1694 Allocation of channels in TDM/TDMA networks, e.g. distributed multiplexers Passive Optical Networks H04Q11/0062
• CPC Class Codes: H04L 1/1812 Hybrid protocols; Hybrid automatic repeat request [HARQ]
• CPC Class Codes: H04L 1/1861 Physical mapping arrangements for ACK signaling see also H04L5/0053
• CPC Class Codes: H04L 1/1864 ARQ related signaling H04L1/1607 takes precedence
• CPC Class Codes: H04L 1/1893 Physical mapping arrangements physical resource mapping in general H04L5/00
• CPC Class Codes: H04L 41/069 using logs of notifications; Post-processing of notifications
• CPC Class Codes: H04L 41/5032 Generating service level reports
• CPC Class Codes: H04L 43/16 Threshold monitoring
• CPC Class Codes: H04L 5/001 the frequencies being arranged in component carriers
• CPC Class Codes: H04L 5/0035 Resource allocation in a cooperative multipoint environment
• 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 5/0057 Physical resource allocation for CQI
• CPC Class Codes: H04L 5/0073 Allocation arrangements that take into account other cell interferences for intercell interference mitigation or co-ordination in orthogonal multiplex systems H04J11/005
• CPC Class Codes: H04L 5/0091 Signaling for the administration of the divided path
• CPC Class Codes: H04L 5/14 Two-way operation using the same type of signal, i.e. duplex
• CPC Class Codes: H04L 65/60 Network streaming of media packets
• CPC Class Codes: H04L 65/612 for unicast
• 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: H04L 65/762 : at the source reformatting of additional data in video distribution servers H04N21/2355
• CPC Class Codes: H04L 67/10 : in which an application is distributed across nodes in the network software deployment G06F8/60; multiprogramming arrangements G06F9/46
• CPC Class Codes: H04W 24/02 : Arrangements for optimising operational condition
• CPC Class Codes: H04W 24/08 : Testing, supervising or monitoring using real traffic
• CPC Class Codes: H04W 24/10 : Scheduling measurement reports ; Arrangements for measurement reports
• CPC Class Codes: H04W 28/0205 : at the air interface dynamic wireless traffic scheduling H04W72/12
• CPC Class Codes: H04W 28/0215 : based on user or device properties, e.g. MTC-capable devices services for machine-to-machine communication [M2M] or machine type communication [MTC] H04W4/70; wireless resource selection or allocation plan definition based on terminal or device properties H04W72/51
• CPC Class Codes: H04W 28/0221 : power availability or consumption
• CPC Class Codes: H04W 28/0252 : per individual bearer or channel dynamic wireless traffic scheduling H04W72/12
• CPC Class Codes: H04W 28/0268 : using specific QoS parameters for wireless networks, e.g. QoS class identifier [QCI] or guaranteed bit rate [GBR] negotiating SLA or negotiating QoS H04W28/24
• CPC Class Codes: H04W 28/16 : Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
• CPC Class Codes: H04W 36/0061 : of neighbour cell information
• CPC Class Codes: H04W 36/0066 : of control information between different types of networks in order to establish a new radio link in the target network
• CPC Class Codes: H04W 36/0083 : Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
• CPC Class Codes: H04W 36/0085 : Hand-off measurements
• CPC Class Codes: H04W 36/0088 : Scheduling hand-off measurements
• CPC Class Codes: H04W 36/08 : Reselecting an access point
• CPC Class Codes: H04W 36/14 : Reselecting a network or an air interface
• CPC Class Codes: H04W 36/22 : for handling the traffic
• CPC Class Codes: H04W 4/70 : Services for machine-to-machine communication [M2M] or machine type communication [MTC]
• CPC Class Codes: H04W 40/005 : Routing actions in the presence of nodes in sleep or doze mode
• CPC Class Codes: H04W 40/246 : Connectivity information discovery
• CPC Class Codes: H04W 48/14 : using user query or user detection
• CPC Class Codes: H04W 48/16 : Discovering, processing access restriction or access information
• CPC Class Codes: H04W 48/18 : Selecting a network or a communication service
• CPC Class Codes: H04W 48/20 : Selecting an access point
• CPC Class Codes: H04W 52/0209 : in terminal devices terminal devices per se H04W88/02
• CPC Class Codes: H04W 52/0212 : managed by the network, e.g. network or access point is master and terminal is slave
• CPC Class Codes: H04W 52/0225 : using monitoring of external events, e.g. the presence of a signal
• CPC Class Codes: H04W 52/0235 : where the received signal is a power saving command
• CPC Class Codes: H04W 52/0258 : controlling an operation mode according to history or models of usage information, e.g. activity schedule or time of day
• CPC Class Codes: H04W 52/0261 : managing power supply demand, e.g. depending on battery level
• CPC Class Codes: H04W 52/04 : TPC
• CPC Class Codes: H04W 52/14 : Separate analysis of uplink or downlink
• CPC Class Codes: H04W 72/02 : Selection of wireless resources by user or terminal
• CPC Class Codes: H04W 72/044 : based on the type of the allocated resource
• CPC Class Codes: H04W 72/0453 : Resources in frequency domain, e.g. a carrier in FDMA
• CPC Class Codes: H04W 72/20 : Control channels or signalling for resource management
• 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 72/30 : Resource management for broadcast services
• CPC Class Codes: H04W 72/52 : based on load
• CPC Class Codes: H04W 72/541 : using the level of interference
• CPC Class Codes: H04W 74/002 : Transmission of channel access control information
• CPC Class Codes: H04W 74/004 : in the uplink, i.e. towards network
• CPC Class Codes: H04W 76/12 : Setup of transport tunnels
• CPC Class Codes: H04W 76/15 : Setup of multiple wireless link connections
• CPC Class Codes: H04W 76/16 : Involving different core network technologies, e.g. a packet-switched [PS] bearer in combination with a circuit-switched [CS] bearer
• CPC Class Codes: H04W 76/23 : Manipulation of direct-mode connections
• 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: H04W 76/30 : Connection release
• CPC Class Codes: H04W 8/08 : Mobility data transfer
• CPC Class Codes: H04W 80/10 : adapted for application session management, e.g. SIP [Session Initiation Protocol] connection management H04W76/00; arrangements for session management H04L67/14
• CPC Class Codes: H04W 84/042 : Public Land Mobile systems, e.g. cellular systems
• CPC Class Codes: H04W 84/12 : WLAN [Wireless Local Area Networks]
• CPC Class Codes: H04W 88/02 : Terminal devices
• CPC Class Codes: H04W 88/06 : adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
• CPC Class Codes: H04W 88/08 : Access point devices
• CPC Class Codes: H04W 88/12 : Access point controller devices
• CPC Class Codes: H04W 88/14 : Backbone network devices
• CPC Class Codes: H04W 88/16 : Gateway arrangements
• CPC Class Codes: H04W 88/18 : Service support devices; Network management devices
• CPC Class Codes: Y02D 30/70 : in wireless communication networks

Abstract

Embodiments of providing enhanced interference measurements for CSI feedback are generally described herein. In some embodiments, CSI-IM resources are used by UE to perform interference measurements. The serving cell determines a hopping pattern for varying a position of the determined CSI-IM resources in subframes transmitted to the served UE. The determined CSI-IM resources and the determined CSI-IM resources hopping pattern are transmitted to the served UE. The serving node transmits a zero-power (ZP) CSI-RS. The serving node receives an interference measurement from the served UE based on CSI-IM and ZP CSI-RS provided to the served LE from the serving cell. Collisions between the CSI-IM of the serving node and CSI-IM of the non-serving nodes are minimized by the determined CSI-IM resources hopping pattern.

Claims

1. A method for providing enhanced Interference Measurements (IM) for Channel State Information (CSI) feedback comprising:

generating a pseudo-random sequence;

determining Channel State Information-Interference Measurement (CSI-IM) resources for a served User Equipment (UE) to perform interference measurements by defining a position value of the CSI-IM resources to cause the position of the CSI-IM resources in subframes to vary in a time domain according to the pseudo-random sequence;

transmitting the determined CSI-IM resources to the served UE;

transmitting a Zero Power (ZP) CSI-RS according to the determined CSI-IM resources to the served UE;

receiving CSI feedback corresponding to the interference measurements performed by the served UE using the CSI-IM transmitted to the served UE and the ZP CSI-RS transmitted to the served UE;

providing a plurality of CSI-IM resources in a subframe;

wherein the determining the CSI-IM resources to provide in subframes further comprises selecting a subframe periodicity and an offset for the subframes;

determining a hopping pattern for varying a position of the determined CSI-IM resources in subframes transmitted to the served UE using at least two CSI-RS resourceConfig messages;

transmitting the determined CSI-IM resources hopping pattern to the served UE;

wherein the determining the hopping pattern comprises selecting a hopping pattern to minimize collisions between CSI-IM resources of different serving cells; and

wherein the selecting a subframe periodicity and an offset for the subframes further comprises defining the periodicity and offset using at least two CSI-RS subframeConfig messages, wherein the determining the hopping pattern further comprises;

defining a pseudo-random sequence hopping function according to

2. The method of claim 1, wherein the determining CSI-IM resources for the served user equipment (UE) to perform interference measurements further comprises:

determining a plurality of subframe configurations and a resource configuration residing on different types of subframes, a first subframe configuration and the resource configuration residing on a first type of subframe and a second subframe configuration residing on a second type of subframe.

3. The method of claim 1, wherein the determining CSI-IM resources for the served user equipment (UE) to perform the interference measurements further comprising:

determining a first subframe set comprising a first subframe configuration and a first resource configuration and determining a second subframe set comprising a second subframe configuration; and

wherein the first subframe set and the second subframe set are arranged to provide independent interference measurements for flexible and non-flexible subframes.

4. A method for providing enhanced Interference Measurements (IM) for Channel State Information (CSI) feedback, comprising:

receiving, at a User Equipment (UE), Channel State Information-Interference Measurement (CSI-IM) resources from a serving cell for the UE to perform interference measurements on serving cells including the serving cell;

receiving a Zero Power (ZP) CSI-RS according to the CSI-IM resources from the serving cell;

receiving a CSI-IM resources hopping pattern that causes the position of the CSI-IM resources in subframes to vary in a time domain according to a pseudo-random sequence, wherein the receiving includes receiving at least two CSI-RS resourceConfig messages defining the CSI-IM resources hopping pattern, and receiving at least two subframeConfig messages defining subframe periodicity and offset of the CSI-IM resources hopping pattern;

performing the interference measurements based on the CSI-IM resources and the ZP CSI-RS; and

transmitting Channel State Information (CSI) feedback to the serving cell based on the interference measurements, wherein the receiving the CSI-IM resources hopping pattern further comprises receiving a hopping pattern defined according to;

5. The method of claim 4, wherein the receiving CSI-IM resources from a serving cell further comprises receiving CSI-IM resources that include at least two parameter sets comprising {resourceConfig0, subframeConfig0} and {subframeConfig1}.

6. The method of claim 4, wherein the receiving the CSI-IM resources and the ZP CSI-RS from the serving cell in subframes further comprises receiving CSI-IM resources and the ZP CSI-RS according to a subframe periodicity and an offset for the subframes defined by the serving cell and provided in the CSI-IM resources received from the serving cell.

7. The method of claim 4, wherein the receiving, at the UE CSI-IM resources from a serving cell for the UE to perform interference measurements on serving cells including the serving cell further comprises receiving a plurality of subframe configurations and a resource configuration residing on different types of subframes, a first subframe configuration and the resource configuration residing on a first type of subframe and a second subframe configuration residing on a second type of subframe.

8. The method of claim 4, wherein the receiving, at the UE, CSI-IM resources from a serving cell for the UE to perform interference measurements on serving cells including the serving cell further comprises receiving a first subframe set comprising a first subframe configuration and a first resource configuration and receiving a second subframe set comprising a second subframe configuration, wherein the first subframe set and the second subframe set are arranged to provide independent interference measurements for flexible and non-flexible subframes.

9. The method of claim 8, wherein the performing interference measurements based on the CSI-IM resources further comprises processing the first subframe set and the second subframe set and performing interference measurements based on the processed first subframe set and second subframe set.

10. The method of claim 4, wherein the receiving, at the UE, CSI-IM resources from a serving cell for the UE to perform interference measurements on serving cells including the serving cell further comprises receiving at least two parameter sets, the at least two parameter sets residing on different types of subframes, wherein a first subframe configuration and resource configuration reside on a first type of subframe and a second subframe configuration and resource configuration reside on a second type of subframe, wherein the performing interference measurements based on the CSI-IM resources further comprises performing interference measurements based on the at least two parameter sets residing on different types of subframes.

11. The method of claim 4, further comprising processing a first of at least two parameter sets comprising a first subframe configuration and resource configuration and a second of the at least two parameter sets comprising a second subframe configuration and resource configuration, wherein the performing interference measurements based on the CSI-IM resources further comprises providing independent interference measurements for flexible and non-flexible subframes based on the first subframe set and the second subframe set.

12. A circuit for a serving cell comprising:

a processor configured to process signals associated with communications;

a transceiver configured to transmit and receive signals associated with the communications;

wherein the processor is configured to;

generating a pseudo-random sequence;

determine Channel State Information-Interference Measurement (CSI-IM) resources for a served User Equipment (UE) served by the serving cell to perform interference measurements by defining a position value of the CSI-IM resources to cause the position of the CSI-IM resources in subframes to vary in a time domain according to the pseudo-random sequence;

provide the determined CSI-IM resources to the transceiver for transmission to the served UE;

provide a Zero Power (ZP) CSI-RS according to the determined CSI-IM resources to the transceiver for transmission to the served UE; and

process a received interference measurement from the served UE based on the CSI-IM provided to the served UE from the serving cell and the ZP CSI-RS provided to the served UE from the serving cell, wherein the processor is further configured to select a subframe periodicity and an offset for the subframes, wherein the processor is further configured to determine a hopping pattern for varying a position of the determined CSI-IM resources in subframes transmitted to a served UE and to provide the determined CSI-IM resources and the determined CSI-IM resources hopping pattern to the transceiver for transmission to the served UE using the selected periodicity and offset, wherein collisions between the CSI-IM transmitted by the transceiver and CSI-IM of neighboring cells are minimized by the determined hopping pattern,

wherein the processor is further configured to determine the hopping pattern according to;

13. The circuit of claim 12, wherein the processor is further configured to determine CSI-IM resources by determining at least two parameter sets comprising {resourceConfig0, subframeConfig0} and {subframeConfig1}, the two parameter sets residing on different types of subframes, a first subframe configuration and a first resource configuration residing on a first type of subframe and a second subframe configuration residing on a second type of subframe.

14. The circuit of claim 13, wherein the processor is further configured to provide independent interference measurements for flexible and non-flexible subframes based on the at least two parameter sets residing on different types of subframes.

15. A User Equipment (UE) comprising:

a processor configured to process signals associated with communications;

a transceiver configured to transmit and receive signals associated with the communications;

wherein the processor is further configured to;

receive Channel State Information-Interference Measurement (CSI-IM) resources from a serving cell from the transceiver;

process the received CSI-IM resources to perform interference measurements on cells including the serving cell;

process a Zero Power (ZP) CSI-RS according to the CSI-IM resources received at the transceiver from the serving cell;

receiving a CSI-IM resources hopping pattern including receiving at least two CSI-RS resourceConfig messages defining the hopping pattern, and receiving at least two subframeConfig messages defining subframe periodicity and offset, wherein the hopping pattern is defined according to;

16. The UE of claim 15, wherein the processor is further configured to receive CSI-IM and the ZP CSI-RS from the serving cell in subframes according to a subframe periodicity and an offset for the subframes defined by the serving cell and provided in the CSI-IM resources received from the serving cell.

17. The UE of claim 15, wherein the receiving CSI-IM resources from a serving cell further comprises receiving CSI-IM resources that include at least two parameter sets comprising {resourceConfig0, subframeConfig0} and {subframeConfig1} and wherein the processor is further configured to process the at least two parameter sets, the processor further configured to perform interference measurements associated with cells including the serving cell based on the processed at least two parameter sets.

18. The UE of claim 17, wherein the at least two parameter sets reside on different types of subframes, a first subframe configuration and resource configuration residing on a first type of subframe and a second subframe configuration residing on a second type of subframe, the processor further configured to perform interference measurements based on the processed at least two parameter sets residing on different types of subframes.

19. The UE of claim 17, wherein the at least two parameter sets are configured to provide independent interference measurements for flexible and non-flexible subframes.