Dynamic configuration of uplink (UL) and downlink (DL) frame resources for a time division duplex (TDD) transmission

• US 9,282,571 B2
• Filed: 10/08/2013
• Issued: 03/08/2016
• Est. Priority Date: 01/17/2013
• Status: Active Grant

• Current Assignee: Intel Corporation
• Original Assignee: Intel IP Corporation (Intel Corporation)
• Inventors: Khoryaev, Alexey, Chervyakov, Andrey, Shilov, Mikhail, Fwu, Jong-Kae, He, Hong
• Primary Examiner(s): SHIVERS, ASHLEY L
• Application Number:
  US14/125,605
• Publication Number:
  US 20150188690A1
• Time in Patent Office: 882 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: H04B 7/0417 Feedback systems
• CPC Class Codes: H04B 7/0456 Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
• CPC Class Codes: H04J 3/00 Time-division multiplex systems H04J14/00 takes precedence; relay systems H04B7/14; selecting techniques H04Q
• CPC Class Codes: H04L 1/18 Automatic repetition systems, e.g. Van Duuren systems
• CPC Class Codes: H04L 1/1812 Hybrid protocols; Hybrid automatic repeat request [HARQ]
• CPC Class Codes: H04L 1/1887 Scheduling and prioritising arrangements
• CPC Class Codes: H04L 2209/24 Key scheduling, i.e. generating round keys or sub-keys for block encryption
• CPC Class Codes: H04L 2209/80 Wireless
• CPC Class Codes: H04L 43/08 Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
• CPC Class Codes: H04L 5/0035 Resource allocation in a cooperative multipoint environment
• CPC Class Codes: H04L 5/0051 of dedicated pilots, i.e. pilots destined for a single user or terminal
• 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 5/0062 Avoidance of ingress interference, e.g. ham radio channels
• CPC Class Codes: H04L 5/0076 Allocation utility-based
• CPC Class Codes: H04L 5/0092 Indication of how the channel is divided
• CPC Class Codes: H04L 5/0094 Indication of how sub-channels of the path are allocated
• CPC Class Codes: H04L 5/0096 Indication of changes in allocation
• CPC Class Codes: H04L 5/14 Two-way operation using the same type of signal, i.e. duplex
• CPC Class Codes: H04L 5/1469 using time-sharing
• CPC Class Codes: H04L 5/22 : using time-division multiplexing
• CPC Class Codes: H04L 63/0428 : wherein the data content is protected, e.g. by encrypting or encapsulating the payload
• CPC Class Codes: H04L 63/30 : for supporting lawful interception, monitoring or retaining of communications or communication related information circuit switched telephony call monitoring H04M3/2281
• CPC Class Codes: H04L 65/1104 : Session initiation protocol [SIP]
• 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: H04L 65/762 : at the source reformatting of additional data in video distribution servers H04N21/2355
• CPC Class Codes: H04L 65/80 : Responding to QoS
• CPC Class Codes: H04L 67/02 : based on web technology, e.g. hypertext transfer protocol [HTTP]
• CPC Class Codes: H04L 9/14 : using a plurality of keys or algorithms
• CPC Class Codes: H04W 12/02 : Protecting privacy or anonymity, e.g. protecting personally identifiable information [PII]
• CPC Class Codes: H04W 12/0431 : Key distribution or pre-distribution; Key agreement
• CPC Class Codes: H04W 12/50 : Secure pairing of devices
• CPC Class Codes: H04W 16/32 : Hierarchical cell structures
• CPC Class Codes: H04W 24/02 : Arrangements for optimising operational condition
• CPC Class Codes: H04W 24/10 : Scheduling measurement reports ; Arrangements for measurement reports
• CPC Class Codes: H04W 28/0231 : based on communication conditions dynamic wireless traffic scheduling definition based on channel quality criteria H04W72/54
• 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 36/0069 : in case of dual connectivity, e.g. decoupled uplink/downlink
• CPC Class Codes: H04W 36/00692 : using simultaneous multiple data streams, e.g. cooperative multipoint [CoMP], carrier aggregation [CA] or multiple input multiple output [MIMO] allocation of physical resources in CoMP or in CA H04L5/0035
• CPC Class Codes: H04W 36/22 : for handling the traffic
• 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 48/08 : Access restriction or access information delivery, e.g. discovery data delivery signalling during connection H04W76/00
• CPC Class Codes: H04W 48/10 : using broadcasted information
• CPC Class Codes: H04W 48/16 : Discovering, processing access restriction or access information
• CPC Class Codes: H04W 48/20 : Selecting an access point
• CPC Class Codes: H04W 52/0251 : using monitoring of local events, e.g. events related to user activity
• CPC Class Codes: H04W 56/001 : Synchronization between nodes
• CPC Class Codes: H04W 68/02 : Arrangements for increasing efficiency of notification or paging channel
• CPC Class Codes: H04W 72/00 : Local resource management
• 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 72/046 : the resource being in the space domain, e.g. beams
• CPC Class Codes: H04W 72/12 : Wireless traffic scheduling
• CPC Class Codes: H04W 72/1263 : Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
• 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 74/00 : Wireless channel access
• 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 76/27 : Transitions between radio resource control [RRC] states
• CPC Class Codes: H04W 76/28 : Discontinuous transmission [DTX]; Discontinuous reception [DRX]
• CPC Class Codes: H04W 8/005 : Discovery of network devices, e.g. terminals
• CPC Class Codes: H04W 84/045 : using private Base Stations, e.g. femto Base Stations, home Node B
• CPC Class Codes: H04W 84/12 : WLAN [Wireless Local Area Networks]
• 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: Y02B 70/30 : Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
• CPC Class Codes: Y02D 30/70 : in wireless communication networks

Abstract

Technology for dynamically reconfiguring an uplink-downlink (UL-DL) time-division duplexing (TDD) configuration is disclosed. In an example, a user equipment (UE) can have computer circuitry configured to: Receive a UL-DL reconfiguration indicator from a node to dynamically reconfigure a flexible subframe (FlexSF) to a different UL-DL transmission direction from a semi-static UL-DL configuration; apply a DL channel timing based on a DL favored UL-DL configuration; and apply a UL channel timing based on a UL favored UL-DL configuration. The FlexSF can be capable of changing an UL-DL transmission direction. The DL favored UL-DL configuration can include more DL subframes than a semi-static UL-DL TDD configuration for the UE, and the UL favored UL-DL configuration includes more UL subframes than a semi-static UL-DL TDD configuration for the UE.

Claims

1. A user equipment (UE) for dynamically reconfiguring an uplink-downlink (UL-DL) time-division duplexing (TDD) configuration, having computer circuitry configured to:

receive a UL-DL reconfiguration indicator from a node to dynamically reconfigure a flexible subframe (FlexSF) to a different UL-DL transmission direction from a semi-static UL-DL configuration, wherein the FlexSF is capable of changing an UL-DL transmission direction;

apply a DL channel timing based on a DL favored UL-DL configuration, wherein the DL favored UL-DL configuration includes more DL subframes than a semi-static UL-DL TDD configuration for the UE; and

apply a UL channel timing based on a UL favored UL-DL configuration, wherein the UL favored UL-DL configuration includes more UL subframes than a semi-static UL-DL TDD configuration for the UE.

2. The computer circuitry of claim 1, wherein the computer circuitry is further configured to:

communicate a HARQ feedback for subframes in a frame using the DL channel timing or the UL channel timing.

3. The computer circuitry of claim 1, wherein:

the DL channel timing includes a physical downlink shared channel (PDSCH) scheduling grant transmission timing, a PDSCH transmission timing, or a PDSCH hybrid automatic repeat request (HARQ) feedback timing for subframes of a frame when the FlexSF is configured as a DL subframe, and

the UL channel timing includes a physical uplink shared channel (PUSCH) scheduling grant timing, a PUSCH transmission timing, a PUSCH HARQ feedback timing, or a PUSCH HARQ retransmission timing for the subframes of the frame when the FlexSF is configured as a UL subframe.

4. The computer circuitry of claim 1, wherein the computer circuitry is further configured to:

configure the DL favored UL-DL configuration via radio resource control (RRC) signaling; and

configure the UL favored UL-DL configuration via radio resource control (RRC) signaling, or

set the UL favored UL-DL configuration to a legacy UL-DL TDD configuration transmitted in a system information block type 1 (SIB1).

5. The computer circuitry of claim 1, wherein the computer circuitry is further configured to:

monitor a downlink control information (DCI) grant subframe for a DL DCI grant or an UL DCI grant which provides a grant for the FlexSF, wherein the UL-DL reconfiguration indicator is indicated by the grant or a DCI message;

configure the FlexSF as the UL subframe when the DCI grant subframe includes the UL DCI grant for the FlexSF; and

configure the FlexSF as the DL subframe when the DCI grant subframe includes the DL DCI grant for the FlexSF.

6. The computer circuitry of claim 5, wherein:

the DCI grant subframe with the DL DCI grant comprises the FlexSF and a physical downlink shared channel (PDSCH) is received in the FlexSF; and

the DCI grant subframe with the UL DCI grant comprises a DL subframe that precedes the FlexSF, and a physical uplink shared channel (PUSCH) is sent in the FlexSF.

7. The computer circuitry of claim 1, wherein:

a third generation partnership project (3GPP) long term evolution (LTE) UL-DL configuration 0 provides the UL favored UL-DL configuration for UL-DL configurations 6, 1, 3, 2, 4, and 5;

an LTE UL-DL configuration 1 provides the DL favored UL-DL configuration for UL-DL configurations 6 and 0 and the UL favored UL-DL configuration for UL-DL configurations 3, 2, 4, and 5;

an LTE UL-DL configuration 2 provides the DL favored UL-DL configuration for UL-DL configurations 3, 1, 6, and 0 and the UL favored UL-DL configuration for UL-DL configuration 5;

an LTE UL-DL configuration 3 provides the DL favored UL-DL configuration for UL-DL configurations 1, 6, and 0 and the UL favored UL-DL configuration for UL-DL configuration 2, 4, and 5;

an LTE UL-DL configuration 4 provides the DL favored UL-DL configuration for UL-DL configurations 3, 1, 6, and 0 and the UL favored UL-DL configuration for UL-DL configuration 5;

an LTE UL-DL configuration 5 provides the DL favored UL-DL configuration for UL-DL configurations 4, 2, 3, 1, 6, and 0; and

an LTE UL-DL configuration 6 provides the DL favored UL-DL configuration for UL-DL configuration 0 and the UL favored UL-DL configuration for UL-DL configuration 1, 3, 2, 4, and 5.

8. The computer circuitry of claim 1, wherein the computer circuitry is further configured to:

receive a dynamic UL-DL reconfiguration mode activation indicator from a node to activate a dynamic UL-DL reconfiguration, wherein the dynamic UL-DL reconfiguration mode activation indicator is received via a DCI or radio resource control (RRC) signaling;

activate the dynamic UL-DL reconfiguration mode; and

transmit an acknowledgement (ACK) of the dynamic UL-DL reconfiguration mode.

9. The computer circuitry of claim 1, wherein the computer circuitry is further configured to:

receive a dynamic UL-DL reconfiguration mode deactivation indicator from a node, wherein the deactivation indicator is received via a DCI or radio resource control (RRC) signaling;

deactivate the dynamic UL-DL reconfiguration mode; and

transmit an acknowledgement (ACK) of the deactivation of the dynamic UL-DL reconfiguration mode.

10. The computer circuitry of claim 1, wherein the computer circuitry is further configured to:

receive a semi-static UL-DL TDD configuration belonging to a set of legacy UL-DL TDD configurations via a system information block type 1 (SIB1) prior to receiving the UL-DL reconfiguration indicator.

11. The computer circuitry of claim 1, wherein the computer circuitry dynamically reconfigures the UL-DL TDD configuration to another legacy UL-DL TDD configuration within a duration of approximately one radio frame or approximately 10 milliseconds (ms);

the legacy UL-DL TDD configuration includes third generation partnership project (3GPP) long term evolution (LTE) UL-DL configurations 0-6;

or the FlexSF includes subframes 3, 4, 7, 8, or 9.

12. The computer circuitry of claim 1, wherein the computer circuitry is further configured to:

convert a frame of a semi-static UL-DL TDD configuration to another legacy UL-DL TDD configuration based on the received UL-DL reconfiguration indicator;

reconfigure a DL channel timing based on the DL favored UL-DL TDD configuration, wherein the DL channel timing includes a physical downlink shared channel (PDSCH) scheduling grant transmission timing, a PDSCH transmission timing, or a PDSCH hybrid automatic repeat request (HARQ) feedback timing; and

reconfigure a UL channel timing based on the UL favored UL-DL TDD configuration, wherein the UL channel timing includes a physical uplink shared channel (PUSCH) scheduling grant timing, a PUSCH transmission timing, a PUSCH HARQ feedback timing, or a PUSCH HARQ retransmission timing.

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

14. A method for dynamically reconfiguring an uplink-downlink (UL-DL) time-division duplexing (TDD) configuration by an evolved Node B (eNB), comprising:

configuring a user equipment (UE) using a semi-static UL-DL TDD configuration belonging to a set of legacy UL-DL TDD configurations;

activating a dynamic UL-DL reconfiguration mode when additional DL or UL resources are needed for data traffic; and

dynamically reconfiguring the semi-static UL-DL TDD configuration to another legacy UL-DL TDD configuration using a UL-DL reconfiguration indicator to change an UL-DL transmission direction of a flexible subframe (FlexSF), wherein the flexible subframe is capable of changing an uplink-downlink transmission direction for a set of legacy UL-DL TDD configurations.

15. The method of claim 14, wherein dynamically reconfiguring the semi-static UL-DL TDD configuration to the other legacy UL-DL TDD configuration further comprises:

reconfiguring a DL channel timing based on a DL favored UL-DL configuration, wherein the DL favored UL-DL configuration includes more DL subframes than a semi-static UL-DL TDD configuration for the UE, and the DL channel timing includes a physical downlink shared channel (PDSCH) scheduling grant transmission timing, a PDSCH transmission timing, and a PDSCH hybrid automatic repeat request (HARQ) feedback timing;

reconfiguring an UL channel timing based on a UL favored UL-DL configuration, wherein the UL favored UL-DL configuration includes more UL subframes than a semi-static UL-DL TDD configuration for the UE, and the UL channel timing includes a physical uplink shared channel (PUSCH) scheduling grant timing, a PUSCH transmission timing, a PUSCH HARQ feedback timing, and a PUSCH HARQ retransmission timing; and

communicating a HARQ feedback for subframes in a frame using the DL channel timing or the UL channel timing.

16. The method of claim 15, wherein:

a third generation partnership project (3GPP) long term evolution (LTE) UL-DL configuration 0 provides the UL favored UL-DL configuration for UL-DL configurations 6, 1, 3, 2, 4, and 5;

an LTE UL-DL configuration 1 provides the DL favored UL-DL configuration for UL-DL configurations 6 and 0 and the UL favored UL-DL configuration for UL-DL configurations 3, 2, 4, and 5;

an LTE UL-DL configuration 2 provides the DL favored UL-DL configuration for UL-DL configurations 3, 1, 6, and 0 and the UL favored UL-DL configuration for UL-DL configuration 5;

an LTE UL-DL configuration 3 provides the DL favored UL-DL configuration for UL-DL configurations 1, 6, and 0 and the UL favored UL-DL configuration for UL-DL configuration 2, 4, and 5;

an LTE UL-DL configuration 4 provides the DL favored UL-DL configuration for UL-DL configurations 3, 1, 6, and 0 and the UL favored UL-DL configuration for UL-DL configuration 5;

an LTE UL-DL configuration 5 provides the DL favored UL-DL configuration for UL-DL configurations 4, 2, 3, 1, 6, and 0; and

an LTE UL-DL configuration 6 provides the DL favored UL-DL configuration for UL-DL configuration 0 and the UL favored UL-DL configuration for UL-DL configuration 1, 3, 2, 4, and 5.

17. The method of claim 14, wherein configuring the UE using the semi-static UL-DL TDD configuration further comprises:

broadcasting the semi-static UL-DL TDD configuration to the UE via a system information block type 1 (SIB1).

18. The method of claim 14, wherein the UL-DL reconfiguration indicator is indicated using a DL downlink control information (DCI) grant or an UL DCI grant in a DCI grant subframe, wherein the DL DCI grant or the UL DCI grant provides a grant for the FlexSF.

19. The method of claim 14, further comprising:

deactivating the dynamic UL-DL reconfiguration mode when the semi-static UL-DL TDD configuration is balanced for the data traffic.

20. The method of claim 19, wherein:

activating the dynamic UL-DL reconfiguration mode further comprises;

transmitting a dynamic UL-DL reconfiguration mode activation indicator to the UE to activate a dynamic UL-DL reconfiguration mode, wherein the dynamic UL-DL reconfiguration mode activation indicator is transmitted via a DCI or radio resource control (RRC) signaling, and

receiving an acknowledgement (ACK) from the UE indicating that the UE is in the dynamic UL-DL reconfiguration mode;

or

deactivating the dynamic UL-DL reconfiguration mode further comprises;

transmitting a dynamic UL-DL reconfiguration mode deactivation indicator to the UE to deactivate the dynamic UL-DL reconfiguration mode, wherein the deactivation indicator is transmitted via a DCI or radio resource control (RRC) signaling; and

receiving an acknowledgement (ACK) from the UE indicating the deactivation of the dynamic UL-DL reconfiguration mode by the UE.

21. The method of claim 14, wherein the FlexSF includes subframes 3, 4, 7, 8, or 9 configured as UL or DL subframes by the semi-static UL-DL TDD configuration.

22. The method of claim 14, wherein dynamically reconfiguring the semi-static UL-DL TDD configuration to the other legacy UL-DL TDD configuration occurs within a duration of approximately one radio frame or approximately 10 milliseconds (ms);

the legacy UL-DL TDD configuration includes third generation partnership project (3GPP) long term evolution (LTE) UL-DL configurations 0-6.

23. At least one non-transitory machine readable storage medium comprising a plurality of instructions adapted to be executed to implement the method of claim 14.

24. A configuration device operable in a node that is configured to dynamically reconfigure an uplink-downlink (UL-DL) time-division duplexing (TDD) configuration, comprising:

a processor to dynamically reconfigure a semi-static UL-DL TDD configuration to another legacy UL-DL TDD configuration using a DL DCI grant or an UL DCI grant in a downlink control information (DCI) grant subframe, wherein the DL DCI grant or the UL DCI grant provides a grant for a flexible subframe (FlexSF), wherein the flexible subframe is capable of changing an uplink-downlink transmission direction for a set of legacy UL-DL TDD configurations; and

a transceiver to transmit the DL DCI grant or the UL DCI grant to a user equipment (UE) in the DCI grant subframe.

25. The configuration device of claim 24, wherein:

the processor is further configured to;

apply a DL channel timing based on a DL favored UL-DL configuration, wherein the DL favored UL-DL configuration includes more DL subframes than a semi-static UL-DL TDD configuration for the UE, and the DL channel timing includes a physical downlink shared channel (PDSCH) scheduling grant transmission timing, a PDSCH transmission timing, and a PDSCH hybrid automatic repeat request (HARQ) feedback timing; and

apply an UL channel timing based on a UL favored UL-DL configuration, wherein the UL favored UL-DL configuration includes more UL subframes than a semi-static UL-DL TDD configuration for the UE, and the UL channel timing includes a physical uplink shared channel (PUSCH) scheduling grant timing, a PUSCH transmission timing, a PUSCH HARQ feedback timing, and a PUSCH HARQ retransmission timing; and

the transceiver is further configured to;

communicate a HARQ feedback for subframes in a frame using the DL channel timing or the UL channel timing.

26. The configuration device of claim 24, wherein:

the processor is further configured to;

activate a dynamic UL-DL reconfiguration mode when additional DL resources are needed for data traffic; and

deactivate the dynamic UL-DL reconfiguration mode when the semi-static UL-DL TDD configuration is balanced for the data traffic; and

the transceiver is further configured to;

transmit a dynamic UL-DL reconfiguration mode activation indicator to the UE to activate a dynamic UL-DL reconfiguration mode, wherein the activation indicator is transmitted via a DCI or radio resource control (RRC) signaling;

receive an acknowledgement (ACK) from the UE indicating that the UE activated the dynamic UL-DL reconfiguration mode;

transmit a dynamic UL-DL reconfiguration mode deactivation indicator to the UE to deactivate the dynamic UL-DL reconfiguration mode, wherein the deactivation indicator is transmitted via a DCI or radio resource control (RRC) signaling; and

receive an acknowledgement (ACK) from the UE indicating the deactivation of the dynamic UL-DL reconfiguration mode by the UE.

27. The configuration device of claim 24, wherein:

the node includes a base station (BS), a Node B (NB), an evolved Node B (eNB), a baseband unit (BBU), a remote radio head (RRH), a remote radio equipment (RRE), a remote radio unit (RRU), or a central processing module (CPM).

28. The configuration device of claim 24, wherein processor dynamically reconfigures the semi-static UL-DL TDD configuration to the other legacy UL-DL TDD configuration within a duration of approximately one radio frame or approximately 10 milliseconds (ms);

the legacy UL-DL TDD configuration includes third generation partnership project (3GPP) long term evolution (LTE) UL-DL configurations 0-6;

the FlexSF includes subframes 3, 4, 7, 8, or 9; and

a physical downlink control channel (PDCCH) or an enhanced PDCCH (EPDCCH) is transmitted in the DCI grant subframe.