Support for asynchronous adaptation to uplink and downlink traffic demands for wireless communication

• US 9,615,378 B2
• Filed: 02/03/2016
• Issued: 04/04/2017
• Est. Priority Date: 03/16/2012
• Status: Active Grant

• Current Assignee: Apple Inc.
• Original Assignee: Intel Corporation
• Inventors: Khoryaev, Alexey, Shilov, Mikhail, Panteleev, Sergey, Chervyakov, Andrey, Lomayev, Artyom
• Primary Examiner(s): Kamara, Mohamed
• Application Number:
  US15/014,770
• Publication Number:
  US 20160164656A1
• Time in Patent Office: 426 Days
• Field of Search: 370310, 370248, 370254, 370329-330, 370312, 370338
• CPC Class Codes: H04J 11/0073 Acquisition of primary synchronisation channel, e.g. detection of cell-ID within cell-ID group
• CPC Class Codes: H04L 1/0033 arrangements specific to the transmitter
• CPC Class Codes: H04L 1/0077 Cooperative coding
• CPC Class Codes: H04L 1/08 by repeating transmission, e.g. Verdan system H04L1/1858 and H04L1/189 take precedence
• CPC Class Codes: H04L 1/1607 Details of the supervisory signal
• CPC Class Codes: H04L 1/1635 Cumulative acknowledgement, i.e. the acknowledgement message applying to all previous messages
• CPC Class Codes: H04L 1/1812 Hybrid protocols; Hybrid automatic repeat request [HARQ]
• CPC Class Codes: H04L 1/1819 with retransmission of additional or different redundancy
• CPC Class Codes: H04L 1/1825 Adaptation of specific ARQ protocol parameters according to transmission conditions
• CPC Class Codes: H04L 1/1854 Scheduling and prioritising arrangements
• 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 1/1877 for semi-reliable protocols, e.g. for less sensitive applications like streaming video buffer level management for video bitstream control arrangements H04N21/44004
• CPC Class Codes: H04L 1/1887 Scheduling and prioritising arrangements
• CPC Class Codes: H04L 1/189 Transmission or retransmission of more than one copy of a message
• CPC Class Codes: H04L 1/1896 ARQ related signaling
• 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 12/2854 Wide area networks, e.g. public data networks
• CPC Class Codes: H04L 47/283 in response to processing delays, e.g. caused by jitter or round trip time [RTT]
• CPC Class Codes: H04L 47/6275 based on priority
• CPC Class Codes: H04L 5/001 : the frequencies being arranged in component carriers
• CPC Class Codes: H04L 5/0053 : Allocation of signaling, i.e. of overhead other than pilot signals
• 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 5/0073 : 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 5/14 : Two-way operation using the same type of signal, i.e. duplex
• CPC Class Codes: H04L 5/1438 : Negotiation of transmission parameters prior to communication modified according to link quality H04L1/0001
• CPC Class Codes: H04L 5/1446 : of transmission speed
• CPC Class Codes: H04L 5/1469 : using time-sharing
• CPC Class Codes: H04L 65/75 : Media network packet handling
• CPC Class Codes: H04L 65/752 : adapting media to network capabilities
• CPC Class Codes: H04L 65/756 : adapting media to device capabilities
• CPC Class Codes: H04L 67/02 : based on web technology, e.g. hypertext transfer protocol [HTTP]
• CPC Class Codes: H04L 67/568 : Storing data temporarily at an intermediate stage, e.g. caching
• CPC Class Codes: H04N 21/25841 : involving the geographical location of the client retrieval from the Internet by querying based on geographical locations G06F16/9537; arrangements for identifying locations of receiving stations in broadcast systems H04H60/51; location of the user terminal in data switching networks H04L67/52; services making use of the location of users or terminals in wireless networks H04W4/02; locating users or terminals in wireless networks H04W64/00
• CPC Class Codes: H04N 21/41407 : embedded in a portable device, e.g. video client on a mobile phone, PDA, laptop constructional details of equipment or arrangements specially adapted for portable computer application G06F1/1626; arrangements specially adapted for mobile receivers in broadcast systems H04H20/57
• CPC Class Codes: H04N 21/6405 : Multicasting data broadcast and multicast in packet switching networks H04L12/18
• CPC Class Codes: H04N 21/6408 : Unicasting
• CPC Class Codes: H04W 16/04 : Traffic adaptive resource partitioning
• CPC Class Codes: H04W 24/00 : Supervisory, monitoring or testing arrangements
• CPC Class Codes: H04W 24/02 : Arrangements for optimising operational condition
• CPC Class Codes: H04W 28/0236 : radio quality, e.g. interference, losses or delay
• 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 28/0278 : using buffer status reports dynamic wireless traffic scheduling definition H04W72/12
• 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 52/02 : Power saving arrangements in wired systems H04L12/12; signaling of mobile application services, e.g. low battery notifications H04W4/20
• CPC Class Codes: H04W 52/0206 : in access points, e.g. base stations access point devices per se H04W88/08
• CPC Class Codes: H04W 52/0209 : in terminal devices terminal devices per se H04W88/02
• CPC Class Codes: H04W 52/0229 : where the received signal is a wanted signal
• CPC Class Codes: H04W 52/0235 : where the received signal is a power saving command
• CPC Class Codes: H04W 52/143 : Downlink power control
• CPC Class Codes: H04W 52/243 : taking into account interferences
• CPC Class Codes: H04W 72/04 : Wireless resource allocation
• CPC Class Codes: H04W 72/0446 : Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/12 : Wireless traffic scheduling
• CPC Class Codes: H04W 72/1268 : of uplink data flows
• CPC Class Codes: H04W 72/1273 : of downlink data 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 72/27 : between access points
• CPC Class Codes: H04W 72/51 : based on terminal or device properties
• CPC Class Codes: H04W 72/541 : using the level of interference
• CPC Class Codes: H04W 72/569 : of the traffic information
• CPC Class Codes: H04W 74/085 : collision avoidance
• 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: Y02D 30/70 : in wireless communication networks

Abstract

Technology is discussed to allow transmission points within a Wireless Wide Area Network (WWAN) to adapt to Up Link (UL) and Down Link (DL) traffic demands independently. To mitigate potential interference arising from transmission points scheduled for conflicting UL and DL transmissions, measurements between transmission points can be made to indicate a level of coupling. Based on the various levels of coupling between transmission points, clusters can be formed. Where a high level of coupling is present, transmission points can be included in a common cluster. Where a low level of coupling is present, they can be isolated. Transmission points within the same cluster are scheduled with a common pattern of UL and DL transmissions to avoid interference. Transmission points in different clusters can have different patterns of UL and DL transmission to independently adapt to the relative demands for UL and DL transmissions experienced within these different clusters.

Claims

1. An apparatus of an eNodeB operable to perform cell clustering interference mitigation, the network eNodeB comprising one or more processors and memory configured to:

identify, at the eNodeB, one or more metrics for a plurality of cells formed by eNodeBs in a network, wherein the one or more metrics include a coupling loss or interference level between the plurality of cells in the network;

compare, at the eNodeB, the one or more metrics for the plurality of cells to a defined threshold; and

divide, at the eNodeB, the plurality of cells into a plurality of isolated cell clusters based on the one or more metrics for the cells in relation to the defined threshold and divide the plurality of cells into the plurality of isolated cell clusters such that a downlink and uplink performance of cells in each isolated cell cluster are substantially not affected by a transmission direction of cells in neighboring isolated cell clusters, wherein a Time Division Duplex (TDD) configuration is independently and dynamically adapted for cells included in each isolated cell cluster based on traffic conditions, thereby causing a reduction in eNodeB-to-eNodeB interference between cells in different isolated cell clusters.

2. The apparatus of claim 1, wherein each isolated cell cluster includes one cell or a group of cells.

3. The apparatus of claim 1, wherein a same transmission direction is configured for cells in each isolated cell cluster to avoid eNodeB-to-eNodeB interference within the isolated cell cluster.

4. The apparatus of claim 1, wherein active transmissions of cells in each isolated cell cluster is uplink or downlink in a subframe or a subset of subframes, such that eNodeB-to-eNodeB interference is mitigated within the isolated cell cluster.

5. The apparatus of claim 1, wherein the isolated cell clusters cause a reduction in user equipment (UE)-to-UE interference between cells in different isolated cell clusters.

6. The apparatus of claim 1, wherein the plurality of cells are neighboring cells in the network.

7. The apparatus of claim 1, wherein Time Division Duplex (TDD) configurations are independently and dynamically adapted for neighboring isolated cell clusters based on respective traffic conditions.

8. The apparatus of claim 1, wherein the one or more metrics for the plurality of cells includes a measured path gain on an eNodeB-to-eNodeB link.

9. At least one non-transitory machine readable storage medium having instructions embodied thereon for performing cell clustering interference mitigation at a network node, the instructions when executed perform the following:

identifying, using at least one processor at the network node, one or more metrics for a plurality of cells in a network, wherein the one or more metrics include a coupling loss or interference level between the plurality of cells in the network;

comparing, using the at least one processor at the network node, the one or more metrics for the plurality of cells to a defined threshold; and

dividing, using the at least one processor at the network node, the plurality of cells into a plurality of isolated cell clusters based on the one or more metrics for the cells in relation to the defined threshold and dividing the plurality of cells into the plurality of isolated cell clusters such that a downlink and uplink performance of cells in each isolated cell cluster are substantially not affected by a transmission direction of cells in neighboring isolated cell clusters, wherein a Time Division Duplex (TDD) configuration is independently and dynamically adapted for cells included in each isolated cell cluster based on traffic conditions, thereby causing a reduction in node-to-node interference between cells in different isolated cell clusters.

10. The at least one non-transitory machine readable storage medium of claim 9, wherein a same transmission direction is configured for cells in each isolated cell cluster to avoid node-to-node interference within the isolated cell cluster.

11. The at least one non-transitory machine readable storage medium of claim 9, wherein active transmissions of cells in each isolated cell cluster is uplink or downlink in a subframe or a subset of subframes, such that node-to-node interference is mitigated within the isolated cell cluster.

12. The at least one non-transitory machine readable storage medium of claim 9, wherein each isolated cell cluster includes one cell or a group of cells.

13. A network node operable to perform cell clustering interference mitigation, the network node comprising one or more processors and memory configured to:

determine, at the network node, one or more metrics for a plurality of cells in a network, wherein the one or more metrics include a coupling loss or interference level between the plurality of cells in the network;

compare, at the network node, the one or more metrics for the plurality of cells to a defined threshold; and

create, at the network node, a plurality of isolated cell clusters from the plurality of cells based on the one or more metrics for the cells in relation to the defined threshold and divide the plurality of cells into the plurality of isolated cell clusters such that a downlink and uplink performance of cells in each isolated cell cluster are substantially not affected by a transmission direction of cells in neighboring isolated cell clusters, wherein the isolated cell clusters cause a reduction in node-to-node interference between cells in different isolated cell clusters.

14. The apparatus of claim 13, wherein a Time Division Duplex (TDD) configuration is independently and dynamically adapted for cells included in each isolated cell cluster based on traffic conditions.

15. The network node of claim 13, wherein the isolated cell clusters cause a reduction in user equipment (UE)-to-UE interference between cells in different isolated cell clusters.

16. The network node of claim 13, wherein the one or more metrics for the plurality of cells includes a measured path gain on a node-to-node link.

17. The network node of claim 13, wherein the plurality of cells are neighboring cells in the network.

18. The network node of claim 13, wherein Time Division Duplex (TDD) configurations are independently and dynamically adapted for neighboring isolated cell clusters based on respective traffic conditions.