# US 2018/0027442 A1 · Periodic channel state information reporting for time division duplex (tdd) carrier aggregation systems

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- Number: US 2018/0027442 A1
- Document ID: US20180027442A1
- Status: Published application
- Kind: A1
- Application number: 15/722,869
- Filed: 2017-10-02
- Published: 2018-01-25
- Earliest claimed: 2012-09-28
- Assignees: Intel Corporation
- Applicants: Intel Corporation
- Inventors: Seunghee Han; Hong He; Jong-Kae Fwu; Alexei Davydov; Ilya Bolotin
- Web page: https://patentgrep.com/patent/US20180027442A1

## CPC

- H04W 28/0221: {power availability or consumption}
- H04W 48/14: using user query {or user detection}
- H04B 17/318: Received signal strength
- H04J 3/1694: {Allocation of channels in TDM/TDMA networks, e.g. distributed multiplexers (Passive Optical Networks H04Q11/0062)}
- H04J 11/00: Orthogonal multiplex systems, {e.g. using WALSH codes}(H04J13/00 takes precedence)
- H04J 11/0086: {Search parameters, e.g. search strategy, accumulation length, range of search, thresholds (code acquisition in DSSS H04B1/7075)}
- H04L 1/1812: Hybrid protocols; Hybrid automatic repeat request [HARQ]
- H04L 1/1861: {Physical mapping arrangements (for ACK signaling see also H04L5/0053)}
- H04L 1/1864: {ARQ related signaling (H04L1/1607 takes precedence)}
- H04L 1/1893: {Physical mapping arrangements (physical resource mapping in general H04L5/00)}
- H04L 5/0035: {Resource allocation in a cooperative multipoint environment}
- H04L 5/0055: {Physical resource allocation for ACK/NACK (for physical mapping arrangements in ARQ protocols H04L1/1861)}
- H04L 5/0057: {Physical resource allocation for CQI}
- H04L 5/0073: {Allocation arrangements that take into account other cell interferences}
- H04L 5/0091: {Signalling for the administration of the divided path, e.g. signalling of configuration information}
- H04L 5/14: Two-way operation using the same type of signal, i.e. duplex
- H04L 41/069: using logs of notifications; Post-processing of notifications
- H04L 41/5032: {Generating service level reports}
- H04L 43/16: Threshold monitoring
- H04L 65/60: Network streaming of media packets
- H04L 65/612: for unicast
- H04L 65/65: Network streaming protocols, e.g. real-time transport protocol [RTP] or real-time control protocol [RTCP]
- H04L 65/762: {at the source (reformatting of additional data in video distribution servers H04N21/2355)}
- H04L 67/10: in which an application is distributed across nodes in the network (software deployment G06F8/60; multiprogramming arrangements G06F9/46)
- H04W 8/08: Mobility data transfer
- H04W 24/02: Arrangements for optimising operational condition
- H04W 24/08: Testing, {supervising or monitoring} using real traffic
- H04W 24/10: Scheduling measurement reports {; Arrangements for measurement reports}
- H04W 28/0205: {at the air interface (dynamic wireless traffic scheduling H04W72/12)}
- 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)}
- H04W 28/0252: {per individual bearer or channel (dynamic wireless traffic scheduling H04W72/12)}
- 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)}
- H04W 28/16: Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
- H04W 36/0061: {of neighbour cell information}
- H04W 36/0066: {of control information between different types of networks in order to establish a new radio link in the target network}
- H04W 36/0085: {Hand-off measurements}
- H04W 36/0088: {Scheduling hand-off measurements}
- H04W 36/22: for handling the traffic
- H04W 40/005: {Routing actions in the presence of nodes in sleep or doze mode}
- H04W 40/246: {Connectivity information discovery}
- H04W 48/16: Discovering, processing access restriction or access information
- H04W 48/20: Selecting an access point
- H04W 52/0209: {in terminal devices}
- H04W 52/0212: {managed by the network, e.g. network or access point is leader and terminal is follower}
- H04W 52/0225: {using monitoring of external events, e.g. the presence of a signal}
- H04W 52/0235: {where the received signal is a power saving command}
- H04W 52/0258: {controlling an operation mode according to history or models of usage information, e.g. activity schedule or time of day}
- H04W 52/04: Transmission power control [TPC]
- H04W 52/14: Separate analysis of uplink or downlink
- H04W 72/02: Selection of wireless resources by user or terminal
- H04W 72/044: based on the type of the allocated resource
- H04W 72/0453: Resources in frequency domain, e.g. a carrier in FDMA
- H04W 72/20: Control channels or signalling for resource management
- H04W 72/21: in the uplink direction of a wireless link, i.e. towards the network
- H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal
- H04W 72/52: based on load
- H04W 72/541: using the level of interference
- H04W 74/002: {Transmission of channel access control information}
- H04W 74/004: {in the uplink, i.e. towards network}
- H04W 76/12: Setup of transport tunnels
- H04W 76/15: Setup of multiple wireless link connections
- H04W 76/16: Involving different core network technologies, e.g. a packet-switched [PS] bearer in combination with a circuit-switched [CS] bearer
- H04W 76/23: Manipulation of direct-mode connections
- H04W 76/27: Transitions between radio resource control [RRC] states
- H04W 76/28: Discontinuous transmission [DTX]; Discontinuous reception [DRX]
- H04W 76/30: Connection release
- H04W 88/02: Terminal devices
- H04L 5/001: {the frequencies being arranged in component carriers}
- H04W 4/70: Services for machine-to-machine communication [M2M] or machine type communication [MTC]
- H04W 48/18: Selecting a network or a communication service
- H04W 52/0261: {managing power supply demand, e.g. depending on battery level}
- H04W 72/30: Resource management for broadcast services
- H04W 80/10: adapted for {application} session management, e.g. SIP [Session Initiation Protocol] {(connection management H04W76/00; arrangements for session management H04L67/14)}
- H04W 84/042: {Public Land Mobile systems, e.g. cellular systems}
- H04W 84/12: WLAN [Wireless Local Area Networks]
- H04W 88/06: adapted for operation in multiple networks {or having at least two operational modes}, e.g. multi-mode terminals
- H04W 88/08: Access point devices
- H04W 88/12: Access point controller devices
- H04W 88/14: Backbone network devices
- H04W 88/16: Gateway arrangements
- H04W 88/18: Service support devices; Network management devices
- Y02D 30/70: in wireless communication networks
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)
- H04B: TRANSMISSION
- H04J: MULTIPLEX COMMUNICATION (transmission in general H04B; peculiar to transmission of digital information H04L5/00; systems for the simultaneous or sequential transmission of more than one television signal H04N7/08; in exchanges H04Q11/00; stereophonic systems H04S)
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)
- Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE

## Abstract

Technology for a user equipment (UE) operable to report periodic channel state information (CSI) to an eNodeB is disclosed. The UE can determine a reporting period (Npd) of a serving cell of the UE. The UE can determine a Time-Division Duplex (TDD) uplink-downlink (UL-DL) configuration of a primary cell of the UE. The UE can encode multiple periodic CSI reports for transmission to the eNodeB using a physical uplink control channel (PUCCH) on the primary cell according to the reporting period Npd.

## Claims

### Claim 1

An apparatus of an eNodeB operable to receive periodic channel state information (CSI) from a user equipment (UE), the apparatus comprising:
memory; and
one or more processors configured to:
encode, at the eNodeB, a reporting period (Npd) for transmission to the UE, wherein the reporting period Npd is for a serving cell of the UE;
encode, at the eNodeB, a Time-Division Duplex (TDD) uplink-downlink (UL-DL) configuration for transmission to the UE, wherein the TDD UL-DL configuration is associated with a primary cell of the UE; and
decode, at the eNodeB, multiple periodic CSI reports received from the UE using a physical uplink control channel (PUCCH) on the primary cell according to the reporting period Npd, wherein:
the reporting period Npd=1 is selected for the serving cell when the TDD UL-DL configuration of the primary cell is 0, 1, 3, 4, or 6 and all UL subframes of the primary cell in a radio frame are used for periodic CSI reporting; or
the reporting period Npd=5 is selected for the serving cell when the TDD UL-DL configuration of the primary cell is 0, 1, 2, or 6; or
the reporting period Npd=10, 20, 40, 80, or 160 is selected for the serving cell for all TDD UL-DL configurations of the primary cell.

### Claim 2 (depends on 1)

The apparatus of claim 1, further comprising a transceiver configured to:
send the reporting period Npd to the UE;
send the TDD UL-DL configuration to the UE; and
receive the multiple CSI reports from the UE.

### Claim 3 (depends on 1)

The apparatus of claim 1, wherein each periodic CSI report corresponds to one or more CSI processes of the serving cell and each CSI process has a CSI process index.

### Claim 4 (depends on 1)

The apparatus of claim 1, wherein the one or more processors are further configured to encode the reporting period Npd for transmission to the UE using a channel quality indicator-precoding matrix indicator (CQI-PMI) configuration index (cqi-pmi-ConfigIndex) parameter.

### Claim 5 (depends on 1)

The apparatus of claim 1, wherein the one or more processors are further configured to encode the reporting period Npd for transmission to the UE via radio resource control (RRC) signaling.

### Claim 6 (depends on 1)

The apparatus of claim 1, wherein the reporting period Npd is defined as a number of subframes after which the UE is configured to transmit the multiple periodic CSI reports to the eNodeB.

### Claim 7 (depends on 1)

The apparatus of claim 1, wherein the multiple periodic CSI reports received from the UE include one or more of: a channel quality indicator (CQI), a precoding matrix indicator (PMI), a precoding type indicator (PTI) or a rank indicator (RI).

### Claim 8 (depends on 1)

The apparatus of claim 1, wherein the multiple periodic CSI reports received from the UE include periodic channel quality indicator-precoding matrix indicator (CQI-PMI) reports.

### Claim 9

An apparatus of a user equipment (UE) operable to report periodic channel state information (CSI) to an eNodeB, the UE comprising:
memory; and
one or more processors configured to:
determine, at the UE, a reporting period (Npd) of a serving cell of the UE;
determine, at the UE, a Time-Division Duplex (TDD) uplink-downlink (UL-DL) configuration of a primary cell of the UE; and
encode, at the UE, multiple periodic CSI reports for transmission to the eNodeB using a physical uplink control channel (PUCCH) on the primary cell according to the reporting period Npd, wherein:
the reporting period Npd=1 is selected for the serving cell when the TDD UL-DL configuration of the primary cell is 0, 1, 3, 4, or 6 and all UL subframes of the primary cell in a radio frame are used for periodic CSI reporting; or
the reporting period Npd=5 is selected for the serving cell when the TDD UL-DL configuration of the primary cell is 0, 1, 2, or 6; or
the reporting period Npd=10, 20, 40, 80, or 160 is selected for the serving cell for all TDD UL-DL configurations of the primary cell.

### Claim 10 (depends on 9)

The apparatus of claim 9, further comprising a transceiver configured to transmit the multiple periodic CSI reports to the eNodeB.

### Claim 11 (depends on 9)

The apparatus of claim 9, wherein each periodic CSI report corresponds to one or more CSI processes of the serving cell and each CSI process has a CSI process index, wherein colliding periodic CSI reports of the serving cell are dropped at the UE except a periodic CSI report corresponding to a CSI process with a lowest CSI process index.

### Claim 12 (depends on 9)

The apparatus of claim 9, wherein the one or more processors are configured to encode the multiple periodic CSI reports for transmission to the eNodeB using transmission mode (TM) 10.

### Claim 13 (depends on 9)

The apparatus of claim 9, wherein the multiple periodic CSI reports include periodic channel quality indicator-precoding matrix indicator (CQI-PMI) reports.

### Claim 14 (depends on 9)

The apparatus of claim 9, wherein the multiple periodic CSI reports include one or more of: a channel quality indicator (CQI), a precoding matrix indicator (PMI), a precoding type indicator (PTI) or a rank indicator (RI).

### Claim 15 (depends on 9)

The apparatus of claim 9, wherein the reporting period Npd is determined based on a channel quality indicator-precoding matrix indicator (CQI-PMI) configuration index (cqi-pmi-ConfigIndex) parameter received from the eNodeB via radio resource control (RRC) signaling.

### Claim 16 (depends on 9)

The apparatus of claim 9, wherein the reporting period Npd is defined as a number of subframes after which the UE is configured to transmit the multiple periodic CSI reports to the eNodeB.

### Claim 17

At least one non-transitory computer readable medium having instructions embodied thereon for reporting periodic channel state information (CSI) from a user equipment (UE) to an eNodeB, the instructions when executed using one or more processors perform the following:
determining, at the UE, a reporting period (Npd) of a serving cell of the UE;
determining, at the UE, a Time-Division Duplex (TDD) uplink-downlink (UL-DL) configuration of a primary cell of the UE; and
encoding, at the UE, multiple periodic CSI reports for transmission to the eNodeB using a physical uplink control channel (PUCCH) on the primary cell according to the reporting period Npd, wherein:
the reporting period Npd=1 is selected for the serving cell when the TDD UL-DL configuration of the primary cell is 0, 1, 3, 4, or 6 and all UL subframes of the primary cell in a radio frame are used for periodic CSI reporting; or
the reporting period Npd=5 is selected for the serving cell when the TDD UL-DL configuration of the primary cell is 0, 1, 2, or 6; or
the reporting period Npd=10, 20, 40, 80, or 160 is selected for the serving cell for all TDD UL-DL configurations of the primary cell.

### Claim 18 (depends on 17)

The at least one non-transitory computer readable medium of claim 17, wherein each periodic CSI report corresponds to one or more CSI processes of the serving cell and each CSI process has a CSI process index, wherein colliding periodic CSI reports of the serving cell are dropped at the UE except a periodic CSI report corresponding to a CSI process with a lowest CSI process index.

### Claim 19 (depends on 17)

The at least one non-transitory computer readable medium of claim 17, further comprising instructions which when executed perform the following: encoding the multiple periodic CSI reports for transmission to the eNodeB using transmission mode (TM) 10.

### Claim 20 (depends on 17)

The at least one non-transitory computer readable medium of claim 17, wherein the multiple periodic CSI reports include periodic channel quality indicator-precoding matrix indicator (CQI-PMI) reports.

### Claim 21 (depends on 17)

The at least one non-transitory computer readable medium of claim 17, wherein the multiple periodic CSI reports include one or more of: a channel quality indicator (CQI), a precoding matrix indicator (PMI), a precoding type indicator (PTI) or a rank indicator (RI).

### Claim 22 (depends on 17)

The at least one non-transitory computer readable medium of claim 17, wherein the reporting period Npd is determined based on a channel quality indicator-precoding matrix indicator (CQI-PMI) configuration index (cqi-pmi-ConfigIndex) parameter received from the eNodeB via radio resource control (RRC) signaling.

### Claim 23 (depends on 17)

The at least one non-transitory computer readable medium of claim 17, wherein the reporting period Npd is defined as a number of subframes after which the UE is configured to transmit the multiple periodic CSI reports to the eNodeB. ting period Npd.