Enhanced physical downlink control channel (ePDCCH) with physical resource block (PRB) bundling

• US 9,655,086 B2
• Filed: 08/22/2012
• Issued: 05/16/2017
• Est. Priority Date: 03/16/2012
• Status: Active Grant

• Current Assignee: Apple Inc.
• Original Assignee: Intel Corporation
• Inventors: Chen, Xiaogang, Zhu, Yuan, Li, Qinghua
• Primary Examiner(s): Pham, Chi H
• Assistant Examiner(s): Ajid, Abdeltif
• Application Number:
  US13/591,865
• Publication Number:
  US 20130242886A1
• Time in Patent Office: 1,728 Days
• Field of Search: 370329
• 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 physical resource block (PRB) bundling an enhanced physical downlink control channel (ePDCCH) with a physical downlink shared channel (PDSCH) is disclosed. One method can include a wireless device receiving from a node the ePDCCH in an ePDCCH PRB contiguous in frequency with a PDSCH PRB carrying the PDSCH. The wireless device can PRB bundle the ePDCCH PRB with the PDSCH PRB.

Claims

1. A method for physical resource block (PRB) bundling an enhanced physical downlink control channel (ePDCCH) with a physical downlink shared channel (PDSCH) at a wireless device, comprising:

receiving from a node at the wireless device the ePDCCH in an ePDCCH PRB contiguous in frequency with a PDSCH PRB carrying the PDSCH;

receiving an indication from the node that the wireless device is to apply PRB bundling, wherein the node transmits the indication to the wireless device via radio resource control (RRC) signaling, wherein the indication excludes the ePDCCH PRB from PRB bundling when an ePDCCH precoder vector differs from a PDSCH precoder vector; and

PRB bundling the ePDCCH PRB with the PDSCH PRB.

2. The method of claim 1, further comprising:

channel estimating or demodulating the PRB bundle using a PDSCH user equipment-specific reference signal (UERS) port and an ePDCCH UERS port, wherein the PDSCH UERS port differs from the ePDCCH UERS port and no single port is used as both a PDSCH UERS port and an ePDCCH UERS port.

3. The method of claim 1, further comprising:

channel estimating or demodulating the PRB bundle using a lowest rank user equipment-specific reference signal (UERS) port, wherein the ePDCCH and the PDSCH are transmitted with different ranks, and a rank of the ePDCCH or a rank of the PDSCH is a lowest rank.

4. The method of claim 1, further comprising:

channel estimating or demodulating the PRB bundle using a PDSCH user equipment-specific reference signal (UERS) port and an ePDCCH UERS port, wherein the PDSCH UERS port and the ePDCCH UERS port use a same port and the PDSCH and the ePDCCH is transmitted with a same rank.

5. The method of claim 1, wherein the ePDCCH is a localized ePDCCH or a distributed ePDCCH.

6. The method of claim 1, wherein receiving the ePDCCH and the PDSCH further comprises receiving the ePDCCH from the node using transmit diversity when PDSCH is transmitted with rank 1, 2, or 4, wherein the ePDCCH is transmitted with precoding matrix [w1 orth(w1)] when PDSCH is transmitted with rank 1, precoding matrix [w1, w2] when PDSCH is transmitted with rank 2, or precoding matrix [w1, w2, w3, w4] when PDSCH is transmitted with rank 4, where w1 is a precoding vector for spatial multiplexing for a first antenna port in a set of antenna ports, w2 is a precoding vector for spatial multiplexing for a second antenna port in the set of antenna ports, w3 is a precoding vector for spatial multiplexing for a third antenna port in the set of antenna ports, w4 is a precoding vector for spatial multiplexing for a fourth antenna port in the set of antenna ports, orth(w1) is a precoding vector that is orthogonal to w1;

and w1, orth(w1), w2, w3, and w4 are each an N_t×

1 vector, where N_t indicates the number of node transmit antennas.

7. 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.

8. A wireless device configured for physical resource block (PRB) bundling of an enhanced physical downlink control channel (ePDCCH) with a physical downlink shared channel (PDSCH), comprising:

a transceiver module configured to receive the ePDCCH in a first PRB contiguous in frequency with a second PRB carrying the PDSCH and to receive an indication from a node via radio resource control (RRC) that the wireless device is to apply PRB bundling, wherein the transceiver module is further configured to receive the indication from a node that the first PRB carrying the ePDCCH is excluded from PRB bundling when at least one of the following occurs;

the ePDCCH is PRB bundled with the PDSCH;

the PDSCH is transmitted with a rank greater than 4;

an ePDCCH precoder vector differs from a PDSCH precoder vector; and

multi-user multiple-input multiple-output (MU-MIMO) is applied; and

a processing module configured to PRB bundle the first PRB with second PRB.

9. The wireless device of claim 8, wherein the processing module is further configured to channel estimate or demodulate the PRB bundle using a specified user equipment-specific reference signal (UERS) port when at least one of the following occurs:

a PDSCH UERS port and an ePDCCH UERS port use a same port and the PDSCH and the ePDCCH is transmitted with a same rank;

the PDSCH UERS port differs from the ePDCCH UERS port;

the ePDCCH and the PDSCH are transmitted with different rank; and

the ePDCCH is transmitted from a node using transmit diversity when PDSCH is transmitted with rank 1, 2, or 4, wherein the ePDCCH is transmitted with precoding matrix [w1 orth(w1)] when PDSCH is transmitted with rank 1, precoding matrix [w1, w2] when PDSCH is transmitted with rank 2, or precoding matrix [w1, w2, w3, w4] when PDSCH is transmitted with rank 4, where w1 is a precoding vector for spatial multiplexing for a first antenna port in a set of antenna ports, w2 is a precoding vector for spatial multiplexing for a second antenna port in the set of antenna ports, w3 is a precoding vector for spatial multiplexing for a third antenna port in the set of antenna ports, w4 is a precoding vector for spatial multiplexing for a fourth antenna port in the set of antenna ports, orth(w1) is a precoding vector that is orthogonal to w1; and

w1, orth(w1), w2, w3, and w4 are each an N_t×

1 vector, where N_t indicates the number of node transmit antennas.

10. The wireless device of claim 8, 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.

11. At least one non-transitory machine readable storage medium comprising a plurality of instructions adapted to be executed to implement a method for excluding an enhanced physical downlink control channel (ePDCCH) in physical resource block (PRB) bundling at a wireless device, comprising:

configuring the wireless device to apply PRB bundling of a plurality of PRBs including at least one PRB associated with an ePDCCH and a plurality of PDSCH PRBs wherein each PDSCH PRB carries a PDSCH;

receiving an indication via radio resource control (RRC) signaling from a node at the wireless device that the at least one ePDCCH PRB is excluded from the PRB bundling, wherein the indication excludes the at least one ePDCCH PRB from the PRB bundling when an ePDCCH precoder vector differs from a PDSCH precoder vector;

receiving at the wireless device the ePDCCH in the ePDCCH PRB contiguous in frequency with the plurality of PDSCH PRBS; and

PRB bundling the plurality of PDSCH PRBs without the ePDCCH PRB.

12. The at least one non-transitory machine readable storage medium of claim 11, further comprising:

channel estimating or demodulating the PRB bundle using a PDSCH user equipment-specific reference signal (VERS) port.

13. The at least one non-transitory machine readable storage medium of claim 11, wherein the indication excludes the ePDCCH PRB from PRB bundling when the PDSCH is transmitted with a rank greater than 4.

14. The at least one non-transitory machine readable storage medium of claim 11, wherein the indication includes that multi-user multiple-input multiple-output (MU-MIMO) is applied, and the indication excludes the ePDCCH PRB from PRB bundling when MU-MIMO is applied.

15. The at least one non-transitory machine readable storage medium of claim 11, wherein the indication includes an instruction to apply PRB bundling.

16. The at least one non-transitory machine readable storage medium of claim 11, wherein the ePDCCH is a localized ePDCCH or a distributed ePDCCH.

17. The at least one non-transitory machine readable storage medium of claim 11, further comprising:

decoding the ePDCCH.

18. A node device of a node configured to instruct a wireless device to apply physical resource block (PRB) bundling of an enhanced physical downlink control channel (ePDCCH) with a physical downlink shared channel (PDSCH), comprising:

a transceiver module configured to communicate with a wireless device and to transmit the ePDCCH in an ePDCCH PRB contiguous in frequency with a PDSCH PRB carrying the PDSCH and transmit an indication via Radio Resource Control (RRC) signaling to PRB bundle the ePDCCH PRB with the PDSCH PRB, and

a processing module configured to generate an indication to exclude an ePDCCH PRB from PRB bundling when at least one of the following occurs;

the ePDCCH is PRB bundled with the PDSCH;

the PDSCH is transmitted with a rank greater than 4;

an ePDCCH precoder vector differs from a PDSCH precoder vector; and

multi-user multiple-input multiple-output (MU-MIMO) is applied; and

the transceiver module is further configured to transmit the indication to exclude the ePDCCH from PRB bundling to the wireless device.

19. The node device of claim 18, further comprising:

the processing module configured to generate the indication to PRB bundle the ePDCCH PRB with the PDSCH PRB when at least one of the following occurs;

a PDSCH UERS port and an ePDCCH UERS port use a same port and the PDSCH and the ePDCCH is transmitted with a same rank;

the PDSCH UERS port differs from the ePDCCH UERS port;

the ePDCCH and PDSCH are transmitted with different rank; and

the ePDCCH is transmitted from a node using transmit diversity and the PDSCH is transmitted with rank 1, 2, or 4.

20. The node device of claim 18, further comprising:

a precoder configured to precode the ePDCCH for transmit diversity with rank 1, 2, or 4, wherein the precoder uses a precoding matrix [w1 orth(w1)] when PDSCH is transmitted with rank 1, precoding matrix [w1, w2] when PDSCH is transmitted with rank 2, or precoding matrix [w1, w2, w3, w4] when PDSCH is transmitted with rank 4, where w1 is a precoding vector for spatial multiplexing for a first antenna port in a set of antenna ports, w2 is a precoding vector for spatial multiplexing for a second antenna port in the set of antenna ports, w3 is a precoding vector for spatial multiplexing for a third antenna port in the set of antenna ports, w4 is a precoding vector for spatial multiplexing for a fourth antenna port in the set of antenna ports, orth(w1) is a precoding vector that is orthogonal to w1; and

w1, orth(w1), w2, w3, and w4 are each an N_t×

1 vector, where N_t indicates the number of node transmit antennas.

21. The node device of claim 18, further comprising:

the processing module configured to de-boost a user equipment-specific reference signal (UERS) power in the ePDCCH PRB for multi-user multiple-input multiple-output (MU-MIMO) by a power offset δ

_power-offset to maintain a substantially same energy per resource element (EPRE) between a UERS in the ePDCCH and a UERS in the PDSCH when the PDSCH and the ePDCCH is transmitted with a same rank.

22. The node device of claim 18, wherein the node is 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.