ENHANCED PHYSICAL DOWNLINK CONTROL CHANNEL (ePDCCH) INTER-CELL INTERFERENCE COORDINATION (ICIC)

• US 20130242885A1
• Filed: 08/22/2012
• Published: 09/19/2013
• Est. Priority Date: 03/16/2012
• Status: Active Grant

• Current Assignee: Apple Inc.
• Original Assignee: Intel Corporation
• Inventors: Zhu, Yuan, Chen, Xiaogang, Li, Qinghua, Etemad, Kamran, Han, Seunghee
• Granted Patent: US 9,398,572 B2
• Time in Patent Office: Days
• US Class Current: 370/329
• 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 for communicating enhanced physical downlink control channels (ePDCCHs) configured for inter-cell interference coordination (ICIC) for a plurality of cells in a physical resource block (PRB) is disclosed. One method can include a node mapping a serving cell control channel element (CCE) in an serving cell ePDCCH in a PRB and a coordination cell CCE in a coordination cell ePDCCH in the PRB. The node can transmit the map of the serving cell CCE and the coordination cell CCE to a wireless device.

Claims

1. A method for communicating enhanced physical downlink control channels (ePDCCHs) configured for inter-cell interference coordination (ICIC) for a plurality of cells in a physical resource block (PRB) from a node, comprising:

mapping a serving cell control channel element (CCE) in a serving cell ePDCCH in a PRB and a coordination cell CCE in a coordination cell ePDCCH in the PRB; and

transmitting the map of the serving cell CCE and the coordination cell CCE to a wireless device.

2. The method of claim 1, further comprising:

transmitting the map of the serving cell CCE or the coordination cell CCE in the PRB to a coordination node, wherein the serving cell CCE is a localized CCE using a localized CCE to resource element (RE) common cell mapping pattern.

3. The method of claim 2, wherein transmitting the map of the serving cell CCE or coordination cell CCE in the PRB to the coordination node uses an X2 application protocol (X2AP), and the serving cell ePDCCH is a localized ePDCCH or a distributed ePDCCH.

4. The method of claim 2, wherein transmitting the map of the serving cell CCE or the coordination cell CCE in the PRB to the coordination node includes a relative narrowband transmitter power (RNTP) per enhanced CCE (E-CCE) in an ePDCCH information element (IE) with a bitmap, wherein each position in the bitmap represents a E-CCE index n_E-CCE value, for which a bit value represents RNTP (n_E-CCE), where an index is associated with a set of E-CCE, numbered from 0 to N_E-CCE,k−

1, wherein N_E-CCE,k is a total number of E-CCE for a subframe k, and RNTP ( ) is a function of the E-CCE index n_E-CCE.

5. The method of claim 2, wherein the serving cell CCE and the coordination cell CCE are mapped in a PRB pair, wherein the PRB pair within a same subframe is configured to carry a plurality of ePDCCHs.

6. The method of claim 5, wherein transmitting the map of the serving cell CCE or the coordination cell CCE in the PRB pair to the coordination node includes an ePDCCH PRB pair allocation information element (IE) with a bitmap, wherein each position in the bitmap represents whether one PRB pair is allocated as an ePDCCH.

7. The method of claim 5, wherein transmitting the map of the serving cell CCE or the coordination cell CCE in the PRB pair to the coordination node includes a number of enhanced CCE (E-CCE) in one PRB pair information element (IE) with an enumerated type, wherein the enumerated type represents a number of localized E-CCE in one PRB pair.

8. The method of claim 2, wherein transmitting the map of the serving cell CCE or the coordination cell CCE in the PRB to the coordination node includes an enhanced CCE (E-CCE) type information element (IE) with a bitmap, wherein each position in the bitmap represents whether an E-CCE is localized or not localized.

9. The method of claim 1, further comprising:

transmitting the serving cell ePDCCH in a downlink to the wireless device, wherein resource elements (REs) associated with the coordination cell ePDCCH are blanked.

10. 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.

11. A node device of a node configured to communicate enhanced physical downlink control channels (ePDCCHs) configured for inter-cell interference coordination (ICIC) for a plurality of cells in a physical resource block (PRB), comprising:

a transceiver module configured to communicate with a wireless device and to send a map of a serving cell control channel element (CCE) associated with a serving cell ePDCCH in a PRB and a coordination cell CCE in a coordination cell ePDCCH in the PRB.

12. The node device of claim 11, wherein transceiver module is further configured to communicate with a coordination node and to transmit or receive the map of the serving cell CCE or the coordination cell CCE.

13. The node device of claim 11, further comprising:

a processing module configured to map the serving cell CCE and the coordination cell CCE in the PRB.

14. The node device of claim 11, wherein the transceiver module is further configured to receive a relative narrowband transmitter power (RNTP) indication RNTP(n_SRB) defined as

15. The node device of claim 11, wherein the transceiver module further configured to communicate with the coordination node via an X2 application protocol (X2AP), the CCEs are localized CCEs, and the ePDCCHs are localized ePDCCHs or distributed ePDCCHs.

16. The node device of claim 11, wherein the transceiver module is further configured to transmit the serving cell ePDCCH in a downlink to the wireless device, wherein resource elements (REs) associated with the coordination cell ePDCCH are blanked.

17. The node device of claim 11, wherein the map of the serving cell CCE or the coordination cell CCE in the PRB includes a relative narrowband transmitter power (RNTP) per enhanced CCE (E-CCE) in ePDCCH information element (IE) with a bitmap, wherein each position in the bitmap represents a E-CCE index n_E-CCE value, for which a bit value represents RNTP (n_E-CCE), where an index is associated with a set of E-CCE, numbered from 0 to N_E-CCE,k−

1, wherein N_E-CCE,k is a total number of E-CCE for a subframe k, and RNTP ( ) is a function of the E-CCE index n_E-CCE.

18. The node device of claim 11, wherein the serving cell CCE and the coordination cell CCE is each mapped in a single PRB pair, wherein the PRB pair is located within a same subframe that is configured to carry a plurality of ePDCCHs.

19. The node device of claim 18, wherein the map of the serving cell CCE or the coordination cell CCE in the PRB pair includes an ePDCCH PRB pair allocation information element (IE) with a bitmap, wherein each position in the bitmap represents whether one PRB pair is allocated as an ePDCCH.

20. The node device of claim 18, wherein the map of the serving cell CCE or the coordination cell CCE in the PRB pair includes a number of enhanced CCE (E-CCE) in one PRB pair information element (IE) with an enumerated type, wherein the enumerated type represents a number of localized E-CCE in one PRB pair.

21. The node device of claim 11, wherein the map of the serving cell CCE or the coordination cell CCE in the PRB includes an enhanced CCE (E-CCE) type information element (IE) with a bitmap, wherein each position in the bitmap represents whether an E-CCE is localized or not localized.

22. The node device of claim 11, wherein the node is selected from the group consisting of an 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.

23. At least one non-transitory machine readable storage medium comprising a plurality of instructions adapted to be executed to implement a method for using enhanced physical downlink control channels (ePDCCHs) configured for inter-cell interference coordination (ICIC) for a plurality of coordination cells in a physical resource block (PRB) at a wireless device, comprising:

receiving from a node at a wireless device a control channel element (CCE) for a cell in an ePDCCH in a PRB, wherein the PRB is configured to carry a plurality of ePDCCHs, and each ePDCCH corresponds to at least one CCE for a separate cell in the plurality of coordination cells; and

generating an interference covariance matrix from ePDCCH configuration information from the PRB, wherein the interference covariance matrix includes coordination cell interference.

24. The at least one non-transitory machine readable storage medium of claim 23, wherein resource elements (REs) associated with ePDCCH for coordination cells are blanked, the CCE is a localized CCE, and the ePDCCH is a localized ePDCCH or a distributed ePDCCH.

25. The at least one non-transitory machine readable storage medium of claim 23, wherein the CCE for a cell in the ePDCCH is mapped in a PRB pair, wherein the PRB pair within a same subframe is configured to carry a plurality of ePDCCHs.

26. A wireless device configured to receive enhanced physical downlink control channels (ePDCCHs) configured for inter-cell interference coordination (ICIC) for a plurality of coordination cells in a physical resource block (PRB), comprising:

a transceiver module configured to receive a control channel element (CCE) for a cell in an ePDCCH in a PRB, wherein the PRB is configured to carry a plurality of ePDCCHs, and each ePDCCH is associated with at least one CCE for a separate cell in the plurality of coordination cells.

27. The wireless device of claim 26, wherein resource elements (REs) associated with ePDCCH for coordination cells are blanked, and the CCE for a cell in the ePDCCH is mapped in a PRB pair, wherein the PRB pair within a same subframe is configured to carry a plurality of ePDCCHs.

28. The wireless device of claim 26, further comprising:

a minimum mean square error with interference rejection combining (MMSE-IRC) receiver configured to generate an interference covariance matrix from ePDCCH configuration information from the PRB pair, wherein the interference covariance matrix includes coordination cell interference.

29. The wireless device of claim 26, wherein 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.