Coordinated dynamic point selection (DPS) with cell range expansion in a coordinated multipoint (CoMP) system

• US 9,231,723 B2
• Filed: 12/21/2012
• Issued: 01/05/2016
• Est. Priority Date: 05/11/2012
• Status: Active Grant

• Current Assignee: Apple Inc.
• Original Assignee: Intel Corporation
• Inventors: Zhu, Yuan, Davydov, Alexei, Morozov, Gregory V., Chatterjee, Debdeep, Chen, Xiaogang, Li, Qinghua, Niu, Huaning, Fwu, Jong-Kae
• Primary Examiner(s): Miah, Liton
• Application Number:
  US13/725,370
• Publication Number:
  US 20130303167A1
• Time in Patent Office: 1,110 Days
• US Class Current: 1/1
• CPC Class Codes: H04B 1/56 with provision for simultaneous communication in two directions
• CPC Class Codes: H04B 15/00 Suppression or limitation of noise or interference by means associated with receiver H04B1/10
• CPC Class Codes: H04B 7/024 Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
• 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: H04B 7/0473 taking constraints in layer or codeword to antenna mapping into account
• CPC Class Codes: H04B 7/0486 taking channel rank into account
• CPC Class Codes: H04B 7/0626 Channel coefficients, e.g. channel state information [CSI]
• CPC Class Codes: H04B 7/063 Parameters other than those covered in groups H04B7/0623 - H04B7/0634, e.g. channel matrix rank or transmit mode selection
• CPC Class Codes: H04B 7/0632 Channel quality parameters, e.g. channel quality indicator [CQI]
• CPC Class Codes: H04B 7/0639 Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam selection
• CPC Class Codes: H04B 7/0647 Variable feedback rate
• CPC Class Codes: H04B 7/065 Variable contents, e.g. long-term or short-short
• CPC Class Codes: H04B 7/26 at least one of which is mobile
• CPC Class Codes: H04J 3/00 Time-division multiplex systems H04J14/00 takes precedence; relay systems H04B7/14; selecting techniques H04Q
• CPC Class Codes: H04J 3/1694 Allocation of channels in TDM/TDMA networks, e.g. distributed multiplexers Passive Optical Networks H04Q11/0062
• CPC Class Codes: H04J 3/26 in which the information and the address are simultaneously transmitted
• CPC Class Codes: H04L 1/0026 Transmission of channel quality indication
• CPC Class Codes: H04L 1/1803 Stop-and-wait protocols
• CPC Class Codes: H04L 1/1822 involving configuration of automatic repeat request [ARQ] with parallel processes
• CPC Class Codes: H04L 27/2627 : Modulators
• CPC Class Codes: H04L 5/0007 : the frequencies being orthogonal, e.g. OFDM(A), DMT
• CPC Class Codes: H04L 5/001 : the frequencies being arranged in component carriers
• CPC Class Codes: H04L 5/0035 : Resource allocation in a cooperative multipoint environment
• CPC Class Codes: H04L 5/0053 : Allocation of signaling, i.e. of overhead other than pilot signals
• 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 5/0096 : 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 65/00 : Network arrangements, protocols or services for supporting real-time applications in data packet communication real-time or near real-time messaging, e.g. instant messaging [IM] H04L51/04; selective video distribution H04N21/00
• CPC Class Codes: H04L 69/22 : Parsing or analysis of headers
• CPC Class Codes: H04L 69/324 : in the data link layer [OSI layer 2], e.g. HDLC
• CPC Class Codes: H04W 16/14 : Spectrum sharing arrangements between different networks
• 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 36/00 : Hand-off or reselection arrangements
• CPC Class Codes: H04W 36/0055 : Transmission or use of information for re-establishing the radio link
• CPC Class Codes: H04W 36/0061 : of neighbour cell information
• CPC Class Codes: H04W 36/0088 : Scheduling hand-off measurements
• CPC Class Codes: H04W 36/0094 : Definition of hand-off measurement parameters
• CPC Class Codes: H04W 36/04 : Reselecting a cell layer in multi-layered cells
• CPC Class Codes: H04W 36/16 : Performing reselection for specific purposes
• CPC Class Codes: H04W 36/18 : for allowing seamless reselection, e.g. soft reselection
• CPC Class Codes: H04W 36/22 : for handling the traffic
• CPC Class Codes: H04W 36/30 : by measured or perceived connection quality data
• CPC Class Codes: H04W 36/32 : by location or mobility data, e.g. speed data
• CPC Class Codes: H04W 4/02 : Services making use of location information
• CPC Class Codes: H04W 4/023 : using mutual or relative location information between multiple location based services [LBS] targets or of distance thresholds
• 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 4/16 : Communication-related supplementary services, e.g. call-transfer or call-hold
• CPC Class Codes: H04W 4/70 : Services for machine-to-machine communication [M2M] or machine type communication [MTC]
• CPC Class Codes: H04W 4/90 : Services for handling of emergency or hazardous situations, e.g. earthquake and tsunami warning systems [ETWS]
• CPC Class Codes: H04W 48/20 : Selecting an access point
• 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 52/0225 : using monitoring of external events, e.g. the presence of a signal
• 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 52/0251 : using monitoring of local events, e.g. events related to user activity
• CPC Class Codes: H04W 56/00 : Synchronisation arrangements
• CPC Class Codes: H04W 56/001 : Synchronization between nodes
• CPC Class Codes: H04W 72/02 : Selection of wireless resources by user or terminal
• CPC Class Codes: H04W 72/044 : based on the type of the allocated resource
• CPC Class Codes: H04W 72/12 : Wireless traffic scheduling
• CPC Class Codes: H04W 72/1215 : for collaboration of different radio technologies
• 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 72/30 : Resource management for broadcast services
• CPC Class Codes: H04W 72/51 : based on terminal or device properties
• CPC Class Codes: H04W 72/54 : based on quality criteria
• CPC Class Codes: H04W 72/541 : using the level of interference
• CPC Class Codes: H04W 72/542 : using measured or perceived quality
• CPC Class Codes: H04W 72/56 : based on priority criteria
• CPC Class Codes: H04W 76/14 : Direct-mode setup
• CPC Class Codes: H04W 76/18 : Management of setup rejection or failure
• 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 88/02 : Terminal devices
• 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: H04W 88/08 : Access point devices
• CPC Class Codes: Y02D 30/70 : in wireless communication networks

Abstract

Technology for mitigating edge effect interference in a Coordinated MultiPoint (CoMP) system having multiple CoMP clusters is disclosed. In an example, a method can include a macro node transmitting a cell range expansion request to user equipments (UEs) within a cell. A CoMP cluster for nodes within the cell that includes UEs operating with the cell range expansion can be generated. Blanked resources between a plurality of macro nodes for the CoMP clusters in the CoMP system can be coordinated using a muting preference including a blanked resource.

Claims

1. A method for mitigating edge effect interference in a Coordinated MultiPoint (CoMP) system having multiple CoMP clusters, comprising:

transmitting from a macro node a cell range expansion request to user equipments (UEs) within a cell to enable the UEs to apply a cell range expansion bias;

generating a CoMP cluster, from at least one of the macro node or a neighboring macro node, for nodes within the cell to include the UEs operating with the cell range expansion bias; and

coordinating blanked resources, from at least one of the macro node or the neighboring macro node, between a plurality of macro nodes for the CoMP clusters in the CoMP system using a muting preference including a blanked resource.

2. The method of claim 1, wherein transmitting the cell range expansion request further comprises:

sending the cell range expansion request for the UE to apply the cell range expansion bias, wherein the UE is adjacent to a receptor cell low power node (LPN) in a neighboring cell; and

coordinating, at the macro node, an handover of the UE from macro node to the receptor cell LPN based on the cell range expansion applied by the UE.

3. The method of claim 2, wherein the cell range expansion bias uses a specified reference signal (RS) biasing having a range greater than 0 decibel (dB) to about 16 dB;

and the UE measures an LPN RS to generate an LPN RS measurement selected from the group consisting of a reference signal received power (RSRP), a reference signal received quality (RSRQ), and combinations thereof.

4. The method of claim 1, wherein coordinating the blanked resources further comprises:

sending, from the macro node to a neighboring macro node in a neighboring CoMP cluster, a muting preference including the blanked resource of the macro node, to enable the neighboring macro node to reschedule the blanked resource for the neighboring CoMP cluster based on the muting preference of the macro node to align the blanked resource of the neighboring CoMP cluster to the CoMP cluster including the macro node, to enable the blanked resource to have a same frequency-domain index and a same time-domain index for both the neighboring CoMP cluster and the CoMP cluster.

5. The method of claim 1, wherein coordinating the blanked resources further comprises:

receiving, at the macro node from a neighboring macro node in a neighboring CoMP cluster, a muting preference including the blanked resource for the neighboring macro node; and

rescheduling the blanked resource at the macro node based on the muting preference of the neighboring macro node of a neighboring CoMP cluster to align the blanked resource of the CoMP cluster including the macro node to the neighboring CoMP cluster.

6. The method of claim 1, wherein the blanked resource has a one subframe granularity in a time domain or a one resource block group (RBG) granularity in a frequency domain.

7. The method of claim 1, wherein coordinating the blanked resources uses X2 signaling or backhaul link signaling via a wired connection, a wireless connection, or an optical fiber connection.

8. The method of claim 1, wherein coordinating the blanked resources uses one bit to represent one subframe where the one bit indicates each blanked resource or transmission resource for the subframe;

and the muting preference includes a resource map selected from the group consisting of a bit array, a bitmap, a bitset, a bitstring, a data array, a list, a string, a table, and combinations thereof; and

the muting preference is transmitted with a periodicity of at least 500 milliseconds.

9. The method of claim 1, further comprising:

scheduling resources for data transmission for a low power node (LPN) with the macro node muted or for both the LPN and the macro node using dynamic point selection (DPS) and dynamic point blanking (DPB).

10. The method of claim 1, wherein the nodes in the cell are selected from the group consisting of 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), and combinations thereof.

11. At least one non-transitory machine readable storage medium comprising a plurality of instructions adapted to be executed to implement the method of claim 1.

12. A coordinating device of a node configured for offloading a user equipment (UE) from a Coordinated MultiPoint (CoMP) cluster to a neighboring CoMP cluster, comprising:

a transceiver module to;

send a cell range expansion request to a UE that requests the UE to use a cell range expansion bias;

receive a re-association request from the UE for the UE to associate with a low power node (LPN) in the neighboring CoMP cluster and offload traffic from the node; and

transmit a muting preference including a scheduled blanked resource for the node to a neighboring macro node in the neighboring CoMP cluster to enable the neighboring macro node to align the blanked resource of the neighboring CoMP cluster to the CoMP cluster including the node.

13. The coordinating device of claim 12, wherein the transceiver module is further configured to:

receive, from a neighboring macro node in the neighboring CoMP cluster, a muting preference including a scheduled blanked resource for the neighboring macro node; and

the coordinating device further comprises;

a processing module to;

reschedule the blanked resource at the node based on the muting preference of the neighboring macro node to align the scheduled blanked resource of the CoMP cluster including the node to the neighboring macro node.

14. The coordinating device of claim 13, wherein the blanked resources includes at least one subframe in a time domain or at least one resource block group (RBG) in a frequency domain.

15. The coordinating device of claim 13, wherein the transceiver module is configured to receive the muting preference of blanked resources from the neighboring macro node using X2 signaling or backhaul link signaling via a wired connection, a wireless connection, or an optical fiber connection;

and the blanked resource is selected from the group consisting of a radio subframe, a slot, a frequency carrier, a frequency subcarrier, a physical resource block (PRB), and combinations thereof.

16. The coordinating device of claim 12, further comprising:

a processing module to;

generate the CoMP cluster to include a neighboring UE formerly in the neighboring CoMP cluster, wherein the neighboring UE is associated with the node or the CoMP cluster due to cell range expansion, and

apply dynamic point selection (DPS) or dynamic point blanking (DPB) in scheduling resources for the neighboring UE.

17. The coordinating device of claim 12, further comprising:

a processing module to;

apply an enhanced inter-cell interference coordination (eICIC) in the time domain for semi-statically scheduling resources for the UE.

18. The wireless device of claim 12, wherein the node is selected from the group consisting of a base station (BS), a Node B (NB), an evolved Node B (eNB), a macro node, a low power node (LPN), a baseband unit (BBU), a remote radio head (RRH), a remote radio equipment (RRE), a remote radio unit (RRU), a central processing module (CPM), and combinations thereof;

the macro node includes a macro evolved Node B (macro-eNB) and the LPN includes a micro-eNB, a pico-eNB, a femto-eNB, a home eNB (HeNB), RRH, RRE, or RRU; and

the wireless device is selected from the group consisting of a user equipment (UE) and a mobile station (MS), and the wireless device includes at least one of an antenna, a touch sensitive display screen, a speaker, a microphone, a graphics processor, an application processor, internal memory, a non-volatile memory port, and combinations thereof.