CONTROL CHANNEL DESIGN FOR NEW CARRIER TYPE (NCT)

• US 20140348077A1
• Filed: 09/27/2013
• Published: 11/27/2014
• Est. Priority Date: 12/03/2012
• Status: Abandoned Application

• Current Assignee: Intel Corporation
• Original Assignee: Intel Corporation
• Inventors: Chen, Xiaogang, Han, Seunghee, Zhu, Yuan, Fwu, Jong-Kae
• Application Number:
  US14/126,020
• Publication Number:
  US 20140348077A1
• Time in Patent Office: Days
• US Class Current: 370/329
• CPC Class Codes: H04B 1/12 Neutralising, balancing, or compensation arrangements
• CPC Class Codes: H04B 1/3827 Portable transceivers
• CPC Class Codes: H04B 17/24 with feedback of measurements to the transmitter
• CPC Class Codes: H04B 17/26 using historical data, averaging values or statistics
• CPC Class Codes: H04B 17/345 Interference values signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR] H04B17/336
• CPC Class Codes: H04B 7/0452 Multi-user MIMO systems
• CPC Class Codes: H04B 7/0617 for beam forming
• CPC Class Codes: H04B 7/15557 Selecting relay station operation mode, e.g. between amplify and forward mode, decode and forward mode or FDD - and TDD mode
• CPC Class Codes: H04J 11/005 of intercell interference
• CPC Class Codes: H04J 11/0053 using co-ordinated multipoint transmission/reception co-ordinated antenna or beam-forming aspects H04B7/022
• CPC Class Codes: H04L 1/0003 by switching between different modulation schemes
• CPC Class Codes: H04L 1/0054 Maximum-likelihood or sequential decoding, e.g. Viterbi, Fano, ZJ algorithms
• CPC Class Codes: H04L 1/1854 Scheduling and prioritising arrangements
• CPC Class Codes: H04L 1/1867 Arrangements specially adapted for the transmitter end
• CPC Class Codes: H04L 25/0202 Channel estimation
• CPC Class Codes: H04L 25/0204 of multiple channels
• CPC Class Codes: H04L 25/03305 Joint sequence estimation and interference removal joint detection of several desired signals H04L25/03331
• CPC Class Codes: H04L 27/0008 arrangements for allowing a transmitter or receiver to use more than one type of modulation negotiating modulation type for two-way transmission paths H04L5/1453
• CPC Class Codes: H04L 5/0007 the frequencies being orthogonal, e.g. OFDM(A), DMT
• 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 5/0055 : Physical resource allocation for ACK/NACK for physical mapping arrangements in ARQ protocols H04L1/1861
• CPC Class Codes: H04L 5/0057 : Physical resource allocation for CQI
• CPC Class Codes: H04L 5/0058 : Allocation criteria
• CPC Class Codes: H04L 5/0092 : Indication of how the channel is divided
• 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 36/10 : Reselecting an access point controller
• CPC Class Codes: H04W 40/16 : based on interference
• CPC Class Codes: H04W 52/0261 : managing power supply demand, e.g. depending on battery level
• CPC Class Codes: H04W 52/40 : during macro-diversity or soft handoff
• CPC Class Codes: H04W 72/12 : Wireless traffic scheduling
• CPC Class Codes: H04W 72/121 : for groups of terminals or users
• 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 72/51 : based on terminal or device properties
• CPC Class Codes: H04W 72/52 : based on load
• 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 72/566 : of the information or information source or recipient
• CPC Class Codes: H04W 72/569 : of the traffic information
• CPC Class Codes: H04W 76/14 : Direct-mode setup
• 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 84/042 : Public Land Mobile systems, e.g. cellular systems
• CPC Class Codes: H04W 84/18 : Self-organising networks, e.g. ad-hoc networks or sensor networks
• CPC Class Codes: H04W 92/18 : between terminal devices
• CPC Class Codes: Y02D 30/70 : in wireless communication networks

Abstract

Technology for allocating at least one physical resource block (PRB) for an Enhanced Physical Hybrid-ARQ Indicator Channel (EPHICH) transmission for a New Carrier Type (NCT) is disclosed. In one method, a number of bits associated with channel coding for an acknowledgement (ACK) or negative acknowledgement (NACK) in the EPHICH transmission is determined. A plurality of modulation symbols for each ACK or NACK in the EPHICH transmission is generated based in part on the number of bits associated with the ACK or NACK. The plurality of modulation symbols are mapped as EPHICH quadrants in one or more resource element blocks (REGs), wherein the EPHICH quadrants are mapped to a plurality of physical resource blocks (PRBs) allocated for EPHICH to increase frequency diversity gain.

Claims

1. An evolved node B (eNB) operable to provide physical broadcast channel (PBCH) transmissions and physical downlink shared channel (PDSCH) transmissions in a New Carrier Type (NCT), the eNB having computer circuitry configured to:

determine that the PDSCH is scheduled to transmit information in at least one physical resource block (PRB) that is used to transmit information in the PBCH;

determine a reference signal type for communicating the information in the PDSCH and the PBCH; and

identify a reference signal location in the NCT for PBCH demodulation so that the PDSCH is not scheduled to transmit information in the same reference signal location as the PBCH, wherein the information in the PDSCH and the PBCH are communicated according to the reference signal type.

2. The computer circuitry of claim 1, further configured to communicate information in the PDSCH, at the eNB, by using user equipment (UE) specific reference signal (UERS) based open loop transmission mode (TM) for accommodating an UERS based PBCH transmission.

3. The computer circuitry of claim 1, further configured to utilize demodulation reference signal (DMRS) for communicating information in the PBCH in the NCT.

4. The computer circuitry of claim 1, further configured to reserve at least one DMRS port for communicating information in the PBCH in the NCT, such that the reserved DMRS ports for communicating information in the PBCH does not correspond to DMRS ports for communicating information in the PDSCH.

5. The computer circuitry of claim 1, further configured to precode at least one resource block (RB) or at least one resource element (RE) included in the physical resource block (PRB) in response to determining that random beamforming is used to communicate information in the PBCH.

6. The computer circuitry of claim 1, further configured to:

determine that a closed loop transmission mode (TM) is being used to communicate information in the PDSCH; and

identify, at the eNB, a DMRS port to communicate information in the PDSCH different than the DMRS port used to communicate information in the PBCH.

7. The computer circuitry of claim 1, further configured to identify at least one physical resource block (PRB) pattern allocated in a common search space (CSS) resource using a cyclic redundancy check (CRC) scrambling code.

8. The computer circuitry of claim 1, further configured to identify common search space (CSS) resources using one or more information bits to indicate at least one physical resource block (PRB) pattern used for the CSS resources.

9. The computer circuitry of claim 8, wherein the one or more information bits are information bits used to indicate a Physical Hybrid-ARQ Indicator Channel (PHICH) configuration in the PBCH.

10. The computer circuitry of claim 8, wherein the one or more information bits are one or more dummy bits in the PBCH.

11. A method for allocating at least one physical resource block (PRB) for an Enhanced Physical Hybrid-ARQ Indicator Channel (EPHICH) transmission for a New Carrier Type (NCT), the method comprising:

determining a number of bits associated with channel coding for an acknowledgement (ACK) or negative acknowledgement (NACK) in the EPHICH transmission;

generating a plurality of modulation symbols for each ACK or NACK in the EPHICH transmission based in part on the number of bits associated with the ACK or NACK; and

mapping the plurality of modulation symbols as EPHICH quadrants in one or more resource element blocks (REGs), wherein the EPHICH quadrants are mapped to a plurality of physical resource blocks (PRBs) allocated for EPHICH to increase frequency diversity gain.

12. The method of claim 11, further comprising mapping the EPHICH quadrants to the REGs across a frequency domain and mapping the EPHICH quadrants to the REGs across a time domain.

13. The method of claim 11, further comprising interleaving an REG index and sequentially mapping the EPHICH quadrants to an interleaved REG.

14. The method of claim 11, further comprising allocating the plurality of PRBs for EPHICH transmission by radio resource control (RRC) signaling for the NCT.

15. The method of claim 11, further comprising:

determining that the plurality of PRBs allocated for the EPHICH overlap with at least one PRB allocated for the physical downlink shared channel (PDSCH); and

applying rate mapping to the plurality of PRBs allocated for the EPHICH while mapping resource elements (REs) associated with the PDSCH.

16. The method of claim 11, further comprising:

identifying an orphan resource element (RE) in the resource element group (REG); and

excluding the REG with the orphan RE or an Orthogonal Frequency Division Multiplexing (OFDM) symbol associated with the REG from the EPHICH transmission.

17. A node operable to assign a plurality of physical resource block (PRB) for an Enhanced Physical Hybrid-ARQ Indicator Channel (EPHICH) transmission for a New Carrier Type (NCT), the node having computer circuitry configured to:

generate a plurality of EPHICH modulation symbols for each acknowledgement (ACK) or negative acknowledgement (NACK) in a EPHICH transmission based in part on a number of bits associated with the ACK or NACK;

index a plurality of resource elements (REs) in one subframe available for the EPHICH transmission in a frequency or time first order and interleave the REs that are indexed with an interleaver; and

allocate EPHICH resources by mapping the plurality of EPHICH modulation symbols in the one subframe to the interleaved indexed REs, wherein the EPHICH modulation symbols are mapped as REs in the plurality of PRBs, wherein a plurality of enhanced control channel elements (ECCEs) associated with the REs are assigned for the EPHICH transmission.

18. The computer circuitry of claim 17, wherein the ECCEs are associated with a distributed enhanced Physical Downlink Control Channel (EPDCCH) set.

19. The computer circuitry of claim 17, further configured to multiplex one or more user equipments (UEs) associated with the EPHICH in a frequency domain or a time domain.

20. The computer circuitry of claim 17, further configured to allocate the EPHICH resources by multiplexing the EPHICH with the EPDCCH in a common search space (CSS) or a UE-specific search space (USS).

21. The computer circuitry of claim 17, further configured to perform frequency division multiplexing (FDM) or time division multiplexing (TDM) with the EPHICHs that are associated with at least one user equipment (UE).

22. The computer circuitry of claim 17, further configured to map the EPHICH used by at least one user equipment (UE) to a plurality of PRBs to increase frequency diversity gain.

23. The computer circuitry of claim 17, further configured to multiplex at least one user equipment (UE) associated with the EPHICHs using code division multiplexing (CDM).

24. The computer circuitry of claim 17, further configured to assign enhanced resource element groups (EREGs) in a distributed enhanced Physical Downlink Control Channel (EPDCCH) set for the EPHICH.

25. The computer circuitry of claim 17, further configured to puncture the ECCEs equally with the EPHICH for balancing the number of available REs in each ECCE for the EPDCCH transmission.

26. The computer circuitry of claim 17, wherein the node is selected from a 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), or a remote radio unit (RRU).