METHOD AND APPARATUS FOR RESOURCE ALLOCATION IN MULTI-CARRIER WIRELESS SYSTEM

• US 20130114533A1
• Filed: 11/05/2012
• Published: 05/09/2013
• Est. Priority Date: 11/04/2011
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Ji, Hyoungju, Kim, Youngbum, Cho, Joonyoung, Choi, Seunghoon
• Granted Patent: US 9,496,999 B2
• Time in Patent Office: Days
• US Class Current: 370/329
• CPC Class Codes: H04L 5/0007 the frequencies being orthogonal, e.g. OFDM(A), DMT
• CPC Class Codes: H04L 5/0044 allocation of payload
• CPC Class Codes: H04L 5/0051 of dedicated pilots, i.e. pilots destined for a single user or terminal
• CPC Class Codes: H04L 5/0064 Rate requirement of the data, e.g. scalable bandwidth, data priority
• CPC Class Codes: H04L 5/0094 Indication of how sub-channels of the path are allocated
• CPC Class Codes: H04W 4/70 Services for machine-to-machine communication [M2M] or machine type communication [MTC]
• CPC Class Codes: H04W 4/80 Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
• CPC Class Codes: H04W 72/1263 Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows

Abstract

A method and apparatus for resource allocation in a multi-carrier wireless communication system enables transmission using smaller resource units and achieves efficient transmission of data channels with very low data rates, scheduling a greater number of user equipments without additional control channel overhead while maintaining compatibility with the resource allocation scheme of legacy user equipments. Thus, one cell controls a larger number of user equipments. In addition, as multiple user equipments are scheduled using a single control channel, resource efficiency is increased.

Claims

1. A downlink resource allocation method for an Evolved Node B base station (eNB) supporting multiple User Equipments (UE) in a wireless communication system, the method comprising:

transmitting configuration information, which contains a group identifier of a group to which a UE belongs and location information of a mini-Physical Resource Block (PRB) allocated to the group in a PRB divided into at least two mini-PRBs, to the UE;

transmitting a control channel, which carries downlink resource allocation information for at least two UEs in a PRB, to the UE; and

transmitting a data channel, which is configured according to the downlink resource allocation information, to the UE.

2. The downlink resource allocation method of claim 1, wherein transmitting the control channel further comprises:

scrambling the control channel based on the group identifier; and

sending the control channel to the UE.

3. The downlink resource allocation method of claim 1, further comprising receiving an uplink data channel from the UE, wherein the uplink data channel is divided into at least two mini-PRBs, and wherein the bandwidth of the uplink data channel is narrower than that of an uplink reference signal.

4. The downlink resource allocation method of claim 3, wherein different cyclic shift values for different UEs are applied to the uplink reference signal.

5. A method of receiving resource allocation information for a User Equipment (UE) in a wireless communication system, the method comprising:

receiving configuration information, which contains a group identifier of a group to which the UE belongs and location information of a mini-Physical Resource Block (PRB) allocated to the group in a PRB divided into at least two mini-PRBs, from an Evolved Node B base station (eNB);

receiving a control channel, which carries downlink resource allocation information for the group in a PRB, from the eNB; and

receiving a data channel, which is configured according to the downlink resource allocation information, from the eNB.

6. The method of claim 5, wherein receiving the control channel further comprises checking whether the received control channel passes a Cyclic Redundancy Check (CRC) test based on the group identifier received from the eNB.

7. The method of claim 5, further comprising transmitting the uplink data channel to the eNB, wherein the uplink data channel is divided into at least two mini-PRBs, and wherein the bandwidth of the uplink data channel is narrower than that of an uplink reference signal.

8. The method of claim 7, wherein different cyclic shift values for different UEs are applied to the uplink reference signal.

9. An Evolved Node B base station (eNB) for allocating resources to multiple User Equipments (UE) in a wireless communication system, comprising:

a transceiver configured to send and receive signals to and from a UE; and

a controller configured to control transmitting configuration information, which contains a group identifier of a group to which a UE belongs and location information of a mini-Physical Resource Block (PRB) allocated to the group in a PRB divided into at least two mini-PRBs, to the UE, transmit a control channel, which carries downlink resource allocation information for at least two UEs in a PRB, to the UE, and transmit a data channel, which is configured according to the downlink resource allocation information, to the UE.

10. The base station of claim 9, wherein the controller scrambles the control channel based on the group identifier and sends the control channel to the UE.

11. The base station of claim 9, wherein the controller controls an operation to receive an uplink data channel from the UE, wherein the uplink data channel is divided into at least two mini-PRBs, and wherein the bandwidth of the uplink data channel is narrower than that of an uplink reference signal.

12. The base station of claim 11, wherein different cyclic shift values for different UEs are applied to the uplink reference signal.

13. A User Equipment (UE) for receiving resource allocation information in a wireless communication system, comprising:

a transceiver configured to send and receive signals to and from an Evolved Node B base station (eNB); and

a controller configured to control receiving configuration information, which contains a group identifier of a group to which the UE belongs and location information of a mini-Physical Resource Block (PRB) allocated to the group in a PRB divided into at least two mini-PRBs, from the eNB, receive a control channel, which carries downlink resource allocation information for the group in a PRB, from the eNB, and receive a data channel, which is configured according to the downlink resource allocation information, from the eNB.

14. The user equipment of claim 13, wherein the controller checks whether the received control channel passes a Cyclic Redundancy Check (CRC) test based on the group identifier received from the eNB.

15. The user equipment of claim 13, wherein the controller controls an operation to transmit an uplink data channel to the eNB, wherein the uplink data channel is divided into at least two mini-PRBs, and wherein the bandwidth of the uplink data channel is narrower than that of an uplink reference signal.

16. The user equipment of claim 15, wherein different cyclic shift values for different UEs are applied to the uplink reference signal.