Base station and method for resource allocation using localized and distributed resource blocks

• US 9,167,571 B2
• Filed: 10/29/2012
• Issued: 10/20/2015
• Est. Priority Date: 03/20/2006
• Status: Active Grant

• Current Assignee: Apple Inc.
• Original Assignee: Intel Corporation
• Inventors: Ho, Minnie, Li, Qinghua, Lin, Xintian E., Somayazulu, Vallabhajosyula S., Talwar, Shilpa
• Primary Examiner(s): Hua, Quan M
• Application Number:
  US13/662,844
• Publication Number:
  US 20130286999A1
• Time in Patent Office: 1,086 Days
• US Class Current: 1/1
• CPC Class Codes: H04B 7/02 Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas RAKE receivers H04B1/7115
• CPC Class Codes: H04L 5/00 Arrangements affording multiple use of the transmission path
• CPC Class Codes: H04W 72/0453 Resources in frequency domain, e.g. a carrier in FDMA
• 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 88/08 Access point devices

Abstract

Embodiments of a base station and method for resource allocation using localized and distributed resource blocks are generally described herein. The base station comprises processing circuitry to allocate localized resources to user stations based on receipt of channel quality information received from the user stations and to allocate distributed resource to user stations based on non-receipt of channel quality information. The base station also comprises physical layer circuitry to transmit control information on a physical channel to indicate the resources that are allocated to each scheduled user station.

Claims

1. An apparatus of an eNodeB arranged for resource allocation in an orthogonal-frequency division multiple access (OFDMA) network, the apparatus comprising transceiver circuitry and processing circuitry arranged to:

receive uplink signals including reporting information that includes at least a channel quality indicator (CQI) from user equipment (UEs), the CQI comprising an indication of channel quality for a channel comprising a plurality of subcarriers;

assign virtual resource blocks (VRBs) to the UEs, wherein some of the UEs are assigned VRBs of a localized type and some other of the UEs are assigned VRBs of a distributed type;

map the VRBs to physical resource blocks (PRBs), each PRB comprising a group of two or more adjacent subcarriers, the VRBs of the localized type being mapped to contiguous PRBs and the VRBs of the distributed type being mapped to non-contiguous PRBs;

provide downlink control signaling to each of the UEs to indicate whether VRBs of the localized type or VRBs of the distributed type have been assigned and to schedule channel resources for communication; and

communicate with the scheduled UEs in accordance with a multiple-input multiple output (MIMO) technique using multiple antennas in which downlink signals are precoded for beamforming based at least in part on the reporting information, the downlink signals comprising downlink subframes of six OFDM symbols.

2. The apparatus of claim 1 wherein communications with the scheduled UEs take place in both contiguous PRBs and non-contiguous PRBs of a downlink subframe.

3. The apparatus of claim 2 wherein a number of VRBs assigned to a UE is based on a bandwidth requirement of the UE.

4. The apparatus of claim 2 wherein the VRBs of the localized type are mapped directly to the contiguous PRBs without subcarriers therebetween, and

wherein the VRBs of the distributed type are mapped to the non-contiguous PRBs having subcarriers therebetween in accordance with a process in which a spacing between the PRBs is based at least in part on a system bandwidth.

5. The apparatus of claim 4 wherein the reporting information received from the UEs include beamforming matrix information, and

wherein the beamforming matrix information is used to precode the downlink signals for closed-loop MIMO communication.

6. The apparatus of claim 5 wherein the reporting information includes a precoding matrix indicator for beamforming, and

wherein the precoding matrix indicator is used to precode the downlink signals for closed-loop MIMO communication.

7. The apparatus of claim 4 wherein the processing circuitry is further configured to schedule resources for the transmission of the reporting information including the CQIs by the UEs, the resources being scheduled based on a reporting mode.

8. The apparatus of claim 7 wherein the reporting mode includes a continuous CQI reporting mode and a discontinuous CQI reporting mode, the continuous CQI reporting mode being configured for changing channel conditions, the discontinuous CQI reporting mode being configured for static channel conditions.

9. The apparatus of claim 4 wherein the processing circuitry is arranged to allocate VRBs of either the localized type or the distributed type depending on whether a UE is a closed-loop UE or an open-loop UE,

wherein the closed-loop UEs comprise UEs from which the reporting information is received;

and

wherein the open-loop UEs comprise UEs from which the reporting information is not received.

10. The apparatus of claim 4 wherein the OFDMA network is a third-generation partnership project long-term evolution network (3GPP LTE) configured network and the eNodeB is configured to operate in accordance with one or more 3GPP LTE standards.

11. A method performed by an eNodeB arranged for resource allocation in an orthogonal-frequency division multiple access (OFDMA) network, the eNodeB comprising transceiver circuitry and processing circuitry, the method comprising:

receiving uplink signals including reporting information that includes at least a channel quality indicator (CQI) from user equipment (UEs), the CO comprising an indication of channel quality for a channel comprising a plurality of subcarriers;

assigning virtual resource blocks (VRBs) to the UEs, wherein some of the UEs are assigned VRBs of a localized type and some other of the UEs are assigned VRBs of a distributed type;

mapping the VRBs to physical resource blocks (PRBs), each PRB comprising a group of two or more adjacent subcarriers, the VRBs of the localized type being mapped to contiguous PRBs and the VRBs of the distributed type being mapped to non-contiguous PRBs;

providing downlink control signaling to each of the UEs to indicate whether VRBs of the localized type or VRBs of the distributed type have been assigned and to schedule channel resources for communication; and

communicating with the scheduled UEs in accordance with a multiple-input multiple output (MIMO) technique using multiple antennas in which downlink signals are precoded for beamforming based at least in part on the reporting information, the downlink signals comprising downlink subframes of six OFDM symbols.

12. The method of claim 11 wherein communications with the scheduled UEs take place in both contiguous PRBs and non-contiguous PRBs of a downlink subframe.

13. The method of claim 12 wherein a number of the VRBs assigned to a UE is based on a bandwidth requirement of the UE.

14. The method of claim 12 wherein the VRBs of the localized type are mapped directly to the contiguous PRBs without subcarriers therebetween, and

wherein the VRBs of the distributed type are mapped to the non-contiguous PRBs having subcarriers therebetween in accordance with a process in which a spacing between the PRBs is based at least in part on a system bandwidth.

15. The method of claim 14 wherein the reporting ing information received from the UEs include beamforming matrix information, and

wherein the beamforming matrix information is used to precode the downlink signals for closed-loop MIMO communication.

16. The method of claim 15 wherein the reporting information includes a precoding matrix indicator for beamforming, and

wherein the precoding matrix indicator is used to precode the downlink signals for closed-loop MIMO communication.

17. The method of claim 14 further comprising scheduling resources for the transmission of the reporting information including the CQIs by the UEs, the resources being scheduled based on a reporting mode.

18. The method of claim 17 wherein the reporting mode includes a continuous CQI reporting mode and a discontinuous CQI reporting mode, the continuous CQI reporting mode being configured for changing channel conditions, the discontinuous CQI reporting mode being configured for static channel conditions.

19. The method of claim 14 further comprising allocating VRBs of either the localized type or the distributed type depending on whether a UE is a closed-loop UE or an open-loop UE,

wherein the closed-loop UEs comprise UEs from which the reporting information is received;

and

wherein the open-loop UEs comprise UEs from which the reporting information is not received.

20. The method of claim 14 wherein the OFDMA network is a third-generation partnership project long-term evolution network (3GPP LTE) configured network and the eNodeB is configured to operate in accordance with one or more 3GPP LTE standards.

21. A non-transitory computer-readable storage medium that stores instructions for execution by one or more processors of an eNodeB to configure the eNodeB to perform operations for resource allocation in an orthogonal-frequency division multiple access (OFDMA) network, the operations to configure the eNodeB to:

receive uplink signals including reporting information that includes at least a channel quality indicator (CQI) from user equipment (UEs), the CQI comprising an indication of channel quality for a channel comprising a plurality of subcarriers;

assign virtual resource blocks (VRBs) to the UEs, wherein some of the UEs are assigned VRBs of a localized type and some other of the UEs are assigned VRBs of a distributed type;

map the VRBs to physical resource blocks (PRBs), each PRB comprising a group of two or more adjacent subcarriers, the VRBs of the localized type being mapped to contiguous PRBs and the VRBs of the distributed type being mapped to non-contiguous PRBs;

provide downlink control signaling to each of the UEs to indicate whether VRBs of the localized type or VRBs of the distributed type have been assigned and to schedule channel resources for communication; and

communicate with the scheduled UEs in accordance with a multiple-input multiple output (MIMO) technique using multiple antennas in which downlink signals are precoded for beamforming based at least in part on the reporting information, the downlink signals comprising downlink subframes of six OFDM symbols.