Adaptive UL-DL TDD configurations in a heterogneous network

• US 9,736,861 B2
• Filed: 08/11/2015
• Issued: 08/15/2017
• Est. Priority Date: 04/13/2012
• Status: Active Grant

• Current Assignee: Apple Inc.
• Original Assignee: Intel Corporation
• Inventors: Fwu, Jong-Kae, Khoryaev, Alexey, He, Hong, Panteleev, Sergey, Chervyakov, Andrey, Shilov, Mikhail A., Chatterjee, Debdeep
• Primary Examiner(s): WILSON, ROBERT W
• Application Number:
  US14/823,818
• Publication Number:
  US 20150349942A1
• Time in Patent Office: 735 Days
• 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 5/0001 Arrangements for dividing the transmission path duplexing H04L5/14; multiplexing of different sources on one path H04J
• CPC Class Codes: H04L 5/0023 Time-frequency-space
• CPC Class Codes: H04L 5/0037 Inter-user or inter-terminal allocation
• CPC Class Codes: H04L 5/0044 allocation of payload
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/0064 Rate requirement of the data, e.g. scalable bandwidth, data priority
• CPC Class Codes: H04L 5/0094 Indication of how sub-channels of the path are allocated
• CPC Class Codes: H04L 5/14 Two-way operation using the same type of signal, i.e. duplex
• 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 28/02 Traffic management, e.g. flow control or congestion control
• CPC Class Codes: H04W 28/0226 based on location or mobility handoff or reselection H04W36/00; mobile application services making use of the location of users or terminals H04W4/02
• 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 36/0016 Hand-off preparation specially adapted for end-to-end data sessions
• CPC Class Codes: H04W 36/08 Reselecting an access point
• 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 4/70 Services for machine-to-machine communication [M2M] or machine type communication [MTC]
• CPC Class Codes: H04W 72/04 Wireless resource allocation
• 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 72/542 : using measured or perceived quality
• CPC Class Codes: H04W 74/0808 : using carrier sensing, e.g. carrier sense multiple access [CSMA]
• CPC Class Codes: H04W 74/0833 : Random access procedures, e.g. with 4-step access
• CPC Class Codes: H04W 76/10 : Connection setup
• CPC Class Codes: H04W 76/19 : Connection re-establishment
• CPC Class Codes: Y02D 30/70 : in wireless communication networks

Abstract

Technology for adapting uplink-downlink (UL-DL) time-division duplexing (TDD) subframe configurations in a heterogeneous network (HetNet) is disclosed. One method can include a reference enhanced Node B (eNB) determining a preferred adaptive UL-DL configuration. The eNB can receive node configuration information for at least one neighboring node. The eNB can reconfigure an adaptive UL-DL configuration for at least one of the reference eNB and the at least one neighboring node based on the node configuration information and sounding reference signal (SRS) subframe scheduling of the reference eNB and the at least one neighboring eNB.

Claims

1. An apparatus of a first eNodeB, the apparatus comprising:

memory storing instructions; and

one or more processors configured to implement the instructions to;

decode interference coordination information that is received at the first eNodeB from a second eNodeB, wherein the interference coordination information includes an uplink-downlink (UL-DL) time-division duplexing (TDD) subframe reconfiguration for the first eNodeB, and the first eNodeB is a neighboring node of the second eNodeB; and

generate UL-DL TDD subframe reconfiguration for transmission from the first eNodeB to a plurality of user equipments (UEs), and the UL-DL TDD subframe reconfiguration is used to perform scheduling of data at the first eNodeB for the UEs with reduced interference.

2. The apparatus of claim 1, wherein the one or more processors and memory are configured to process the UL-DL TDD subframe reconfiguration for transmission to the UEs using a physical downlink control channel (PDCCH) and in accordance with a defined downlink control information (DCI) format.

3. The apparatus of claim 1, wherein the one or more processors and memory are configured to process the UL-DL TDD subframe reconfiguration for transmission to the UEs using a physical downlink control channel (PDCCH) and in accordance with downlink control information (DCI) format 1c.

4. The apparatus of claim 1, wherein the one or more processors and memory are configured to process the UL-DL TDD subframe reconfiguration received from the second eNodeB via an X2 interface between the first eNodeB and the second eNodeB.

5. The apparatus of claim 1, wherein the one or more processors and memory are configured to:

control intra-frequency neighboring cells; and

control inter-frequency neighboring cells.

6. At least one non-transitory machine readable storage medium having instructions that when executed by at least one processor performs the following:

identifying interference coordination information that is received from a reference node, wherein the interference coordination information includes an uplink-downlink (UL-DL) time-division duplexing (TDD) subframe reconfiguration for the neighboring node; and

transmitting the UL-DL TDD subframe reconfiguration to a plurality of user equipments (UEs) and the UL-DL TDD subframe reconfiguration is used to perform scheduling of data at the neighboring node for the UEs.

7. The at least one non-transitory machine readable storage medium of claim 6, further comprising instructions that when executed by the at least one processor performs the following:

transmitting the UL-DL TDD subframe reconfiguration to the UEs using a physical downlink control channel (PDCCH) and in accordance with a defined downlink control information (DCI) format.

8. The at least one non-transitory machine readable storage medium of claim 6, further comprising instructions that when executed by the at least one processor performs the following:

transmitting the UL-DL TDD subframe reconfiguration to the UEs using a physical downlink control channel (PDCCH) and in accordance with downlink control information (DCI) format 1c.

9. The at least one non-transitory machine readable storage medium of claim 6, further comprising instructions that when executed by the at least one processor performs the following:

receiving the UL-DL TDD subframe reconfiguration from the reference node using a backhaul link via a wired connection between the neighboring node and the reference node.

10. An apparatus of a first eNodeB, the apparatus comprising:

memory storing instructions; and

one or more processors configured to implement the instructions to;

identify an uplink-downlink (UL-DL) time-division duplexing (TDD) subframe reconfiguration for a second eNodeB, and the first eNodeB is a neighboring node of the second eNodeB; and

process the interference coordination information that includes the UL-DL TDD subframe reconfiguration for transmission to the second eNodeB, the second eNodeB being configured to perform data scheduling with reduced interference using the UL-DL TDD subframe reconfiguration received from the first eNodeB.

11. The apparatus of claim 10, wherein the one or more processors and memory are configured to process the UL-DL TDD subframe reconfiguration for transmission to the second eNodeB via an X2 interface between the first eNodeB and the second eNodeB.

12. The apparatus of claim 10, wherein the one or more processors and memory are configured to:

control intra-frequency neighboring cells; and

control inter-frequency neighboring cells.

13. A reference node operable to communicate interference coordination information with a neighboring node, the reference node comprising:

memory storing instructions; and

one or more processors configured to implement the instructions to;

identify, at the reference node, an uplink-downlink (UL-DL) time-division duplexing (TDD) subframe reconfiguration for the neighboring node; and

communicate, from the reference node to the neighboring node, the interference coordination information that includes the UL-DL TDD subframe reconfiguration, the neighboring node being configured to perform data scheduling with reduced interference using the UL-DL TDD subframe reconfiguration that is received from the reference node.

14. The reference node of claim 13, wherein the one or more processors and memory are configured to communicate the UL-DL TDD subframe reconfiguration to the neighboring node using a backhaul link via a wired connection between the reference node and the neighboring node.

15. The reference node of claim 13, wherein the one or more processors and memory are configured to:

control intra-frequency neighboring cells; and

control inter-frequency neighboring cells.