Periodic channel state information reporting for coordinated multipoint (CoMP) systems

• US 9,369,922 B2
• Filed: 05/03/2013
• Issued: 06/14/2016
• Est. Priority Date: 08/03/2012
• Status: Active Grant

• Current Assignee: Apple Inc.
• Original Assignee: Intel Corporation
• Inventors: Han, Seunghee, Davydov, Alexei, Fwu, Jong-Kae, Etemad, Kamran
• Primary Examiner(s): VU, HOANG-CHUONG Q
• Application Number:
  US13/886,619
• Publication Number:
  US 20140036704A1
• Time in Patent Office: 1,138 Days
• Field of Search: 370/328, 370/329, 370/336, 370/535
• US Class Current: 1/1
• CPC Class Codes: H04B 17/27 for locating or positioning the transmitter
• CPC Class Codes: H04L 1/0013 Rate matching, e.g. puncturing or repetition of code symbols
• CPC Class Codes: H04L 1/0026 Transmission of channel quality indication
• CPC Class Codes: H04L 1/0031 Multiple signaling transmission H04L1/1664, F15 take precedence
• CPC Class Codes: H04L 1/1671 the supervisory signal being transmitted together with control information
• CPC Class Codes: H04L 1/1812 Hybrid protocols; Hybrid automatic repeat request [HARQ]
• CPC Class Codes: H04L 41/0659 by isolating or reconfiguring faulty entities
• CPC Class Codes: H04L 41/082 the condition being updates or upgrades of network functionality
• CPC Class Codes: H04L 41/0836 to enhance reliability, e.g. reduce downtime
• CPC Class Codes: H04L 43/0811 by checking connectivity
• CPC Class Codes: H04L 45/306 Route determination based on the nature of the carried application
• 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 65/1016 IP multimedia subsystem [IMS]
• CPC Class Codes: H04L 65/1104 Session initiation protocol [SIP]
• CPC Class Codes: H04L 65/613 for the control of the source by the destination control signals issued by the client directed to the server or network components specially adapted for selective content distribution H04N21/637
• CPC Class Codes: H04L 65/80 Responding to QoS
• CPC Class Codes: H04L 67/51 Discovery or management thereof, e.g. service location protocol [SLP] or web services
• CPC Class Codes: H04L 67/75 Indicating network or usage conditions on the user display
• CPC Class Codes: H04N 21/23439 : for generating different versions
• CPC Class Codes: H04N 21/25825 : involving client display capabilities, e.g. screen resolution of a mobile phone optimising the visualisation of content during browsing in the Internet G06F16/9577; processing of terminal status or physical abilities in wireless networks H04W8/22; authentication in wireless network security H04W12/06
• CPC Class Codes: H04W 12/06 : Authentication
• CPC Class Codes: H04W 16/18 : Network planning tools
• CPC Class Codes: H04W 16/28 : using beam steering
• CPC Class Codes: H04W 24/02 : Arrangements for optimising operational condition
• CPC Class Codes: H04W 24/04 : Arrangements for maintaining operational condition
• CPC Class Codes: H04W 28/0205 : at the air interface dynamic wireless traffic scheduling H04W72/12
• CPC Class Codes: H04W 28/0236 : radio quality, e.g. interference, losses or delay
• CPC Class Codes: H04W 28/065 : using assembly or disassembly of packets
• CPC Class Codes: H04W 28/12 : using signalling between network elements
• CPC Class Codes: H04W 36/14 : Reselecting a network or an air interface
• CPC Class Codes: H04W 4/02 : Services making use of location information
• CPC Class Codes: H04W 4/70 : Services for machine-to-machine communication [M2M] or machine type communication [MTC]
• CPC Class Codes: H04W 40/20 : based on geographic position or location
• 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 48/18 : Selecting a network or a communication service
• CPC Class Codes: H04W 52/00 : Power management, e.g. TPC [Transmission Power Control], power saving or power classes gain control in transmitters or power amplifiers H03G3/3042
• 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 52/0216 : using a pre-established activity schedule, e.g. traffic indication frame
• CPC Class Codes: H04W 52/0229 : where the received signal is a wanted signal
• 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 72/21 : in the uplink direction of a wireless link, i.e. towards the network
• CPC Class Codes: H04W 76/10 : Connection setup
• CPC Class Codes: H04W 76/11 : Allocation or use of connection identifiers
• CPC Class Codes: H04W 76/14 : Direct-mode setup
• 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 76/28 : Discontinuous transmission [DTX]; Discontinuous reception [DRX]
• 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: Y02D 30/70 : in wireless communication networks

Abstract

Technology for periodic channel state information (CSI) reporting from a user equipment (UE) configured for carrier aggregation is disclosed. One method can include the UE generating a plurality of periodic CSI reports for transmission in a subframe for a plurality of CSI processes, wherein each periodic CSI report corresponds to a CSI process with a CSI process index. A single periodic CSI report from the plurality of periodic CSI reports may be selected to multiplex with a hybrid automatic repeat request-acknowledgement (HARQ-ACK) feedback. The periodic CSI report multiplex with the HARQ-ACK feedback and any scheduling request (SR) may be determined to have a bit size less than or equal to a physical uplink control channel (PUCCH) format 3 maximum payload bit size. The periodic CSI report multiplexed with the HARQ-ACK feedback and any SR may be transmitted to a serving cell.

Claims

1. A user equipment (UE) operable to report periodic channel state information (CSI), the UE having one or more processors configured to:

identify a periodic CSI report that is prioritized for transmission to an evolved node B (eNB) when the UE operates in a coordinated multipoint (CoMP) and carrier aggregation (CA) configuration, the periodic CSI report being selected from a plurality of CSI reports, wherein the CSI reports are prioritized based on a physical uplink control channel (PUCCH) reporting type according to a first priority level, wherein the CSI reports are prioritized based on a CSI process index according to a second priority level when PUCCH reporting types for the CSI reports are the same, wherein the CSI reports are prioritized based on a serving cell index according to a third priority level when the PUCCH reporting types and CSI process indexes for the CSI reports are the same;

generate hybrid automatic repeat request-acknowledgement (HARQ-ACK) feedback for transmission to the eNB;

combine the HARQ-ACK feedback with the periodic CSI report when the transmission of the periodic CSI report coincides with the transmission of the HARQ-ACK feedback; and

send the periodic CSI report combined with the HARQ-ACK feedback for transmission to the eNB, wherein the periodic CSI report for CoMP and CA in combination with the HARQ-ACK feedback is transmitted from the UE using a physical uplink control channel (PUCCH) format 3.

2. The UE of claim 1, wherein a selected subframe for transmitting the periodic CSI report to the eNB is configured by higher layers.

3. The UE of claim 1, wherein the HARQ-ACK feedback includes a scheduling request (SR).

4. The UE of claim 1, wherein CSI bits for the periodic CSI report are combined with a sequence of HARQ-ACK bits and a scheduling request (SR) bit.

5. The UE of claim 1, wherein the one or more processors are further configured to select the periodic CSI report among a plurality of periodic CSI reports based on a physical uplink control channel (PUCCH) reporting type of the periodic CSI report, wherein PUCCH reporting types 3, 5, 6, and 2a have a priority higher than PUCCH reporting types 1, 1a, 2, 2b, 2c, and 4, and PUCCH reporting types 2, 2b, 2c, and 4 have a priority higher than PUCCH reporting types 1 and 1 a.

6. The UE of claim 5, wherein the one or more processors are further configured to select the periodic CSI report based on the periodic CSI report having the lowest CSI process index among the plurality of periodic CSI reports, wherein each of the plurality of periodic CSI reports have a same PUCCH reporting type.

7. The UE of claim 6, wherein the one or more processors are further configured to select the periodic CSI report based on the periodic CSI report having the lowest serving cell index among the plurality of periodic CSI reports, wherein each of the plurality of periodic CSI reports have the same PUCCH reporting type and a same CSI process index.

8. The UE of claim 1, wherein the UE includes an antenna, a touch sensitive display screen, a speaker, a microphone, a graphics processor, an application processor, an internal memory, or a non-volatile memory port.

9. A non-transitory machine readable storage medium having instructions embodied thereon, the instructions being executed by one or more processors to perform the following operations:

identifying, at a user equipment (UE), a periodic channel state information (CSI) report that is prioritized for transmission to an evolved node B (eNB) when the UE operates in a coordinated multipoint (CoMP) and carrier aggregation (CA) configuration, the periodic CSI report being selected from a plurality of CSI reports, wherein the CSI reports are prioritized based on a physical uplink control channel (PUCCH) reporting type according to a first priority level, wherein the CSI reports are prioritized based on a CSI process index according to a second priority level when PUCCH reporting types for the CSI reports are the same, wherein the CSI reports are prioritized based on a serving cell index according to a third priority level when the PUCCH reporting types and CSI process indexes for the CSI reports are the same;

generating, at the UE, hybrid automatic repeat request-acknowledgement (HARQ-ACK) feedback for transmission to the eNB;

combining the HARQ-ACK feedback with the periodic CSI report when the transmission of the periodic CSI report coincides with the transmission of the HARQ-ACK feedback; and

sending the periodic CSI report combined with the HARQ-ACK feedback for transmission from the UE to the eNB, wherein the periodic CSI report for CoMP and CA in combination with the HARQ-ACK feedback is transmitted from the UE using a physical uplink control channel (PUCCH) format 3.

10. The non-transitory machine readable storage medium of claim 9, wherein the HARQ-ACK feedback and the periodic CSI report are jointly coded using up to 22 aggregated information bits.

11. The non-transitory machine readable storage medium of claim 9, wherein the HARQ-ACK feedback includes a scheduling request (SR).

12. The non-transitory machine readable storage medium of claim 9, wherein a payload bit size of the PUCCH format 3 has a maximum payload bit size of 22 aggregated information bits.

13. The non-transitory machine readable storage medium of claim 9, further comprising instructions which when executed by the one or more processors perform the following operation:

transmitting the HARQ-ACK feedback without the periodic CSI report from the UE to the eNB when the periodic CSI report combined with the HARQ-ACK feedback are jointly coded using more than 22 aggregated information bits.

14. The non-transitory machine readable storage medium of claim 9, wherein a selected subframe for transmitting the periodic CSI report from the UE to the eNB is configured by higher layers.

15. An evolved node B (eNB) configured to support periodic channel state information (CSI) reporting, the eNB comprising one or more processors configured to:

receive, from a user equipment (UE) configured for coordinated multipoint (CoMP) and carrier aggregation (CA), a periodic CSI report combined with hybrid automatic repeat request-acknowledgement (HARQ-ACK) feedback using a physical uplink control channel (PUCCH) format 3, wherein the periodic CSI report is for CoMP and CA, wherein;

the periodic CSI report is combined with the HARQ-ACK feedback when a transmission of the periodic CSI report coincides with a transmission of the HARQ-ACK feedback, and

the periodic CSI report is selected from a plurality of CSI reports, and the CSI reports are prioritized based on a physical uplink control channel (PUCCH) reporting type according to a first priority level, and the CSI reports are prioritized based on a CSI process index according to a second priority level when PUCCH reporting types for the CSI reports are the same, and the CSI reports are prioritized based on a serving cell index according to a third priority level when the PUCCH reporting types and CSI process indexes for the CSI reports are the same.

16. The eNB of claim 15, wherein the HARQ-ACK feedback includes with a scheduling request (SR).

17. The eNB of claim 15, wherein a selected subframe for receiving the periodic CSI report from the UE is configured by higher layers.

18. The eNB of claim 15, wherein CSI bits for the periodic CSI report are combined with a sequence of HARQ-ACK bits and a scheduling request (SR) bit.

19. A non-transitory machine readable storage medium having instructions embodied thereon, the instructions being executed by one or more processors to perform the following operation:

receiving, at an evolved node B (eNB) from a user equipment (UE) configured for coordinated multipoint (CoMP) and carrier aggregation (CA), a periodic CSI report combined with hybrid automatic repeat request-acknowledgement (HARQ-ACK) feedback using a physical uplink control channel (PUCCH) format 3, wherein the periodic CSI report is for CoMP and CA, wherein;

the periodic CSI report is combined with the HARQ-ACK feedback when a transmission of the periodic CSI report coincides with a transmission of the HARQ-ACK feedback, the HARQ-ACK feedback including a scheduling request (SR), and

the periodic CSI report is selected from a plurality of CSI reports, and the CSI reports are prioritized based on a physical uplink control channel (PUCCH) reporting type according to a first priority level, and the CSI reports are prioritized based on a CSI process index according to a second priority level when PUCCH reporting types for the CSI reports are the same, and the CSI reports are prioritized based on a serving cell index according to a third priority level when the PUCCH reporting types and CSI process indexes for the CSI reports are the same.

20. The non-transitory machine readable storage medium of claim 19, wherein a selected subframe for receiving the periodic CSI report from the UE is configured by higher layers.

21. The non-transitory machine readable storage medium of claim 19, wherein CSI bits for the periodic CSI report are combined with a sequence of HARQ-ACK bits and a scheduling request (SR) bit.