RADIO RESOURCE REALLOCATING METHOD FOR CIRCUIT MODE

• US 20100020758A1
• Filed: 05/30/2008
• Published: 01/28/2010
• Est. Priority Date: 05/30/2007
• Status: Active Grant

• Current Assignee: Electronics and Telecommunications Research Institute, Samsung Electronics Co. Ltd.
• Original Assignee: Electronics and Telecommunications Research Institute, Samsung Electronics Co. Ltd.
• Inventors: Lim, Kwang Jae, Chang, Sung Cheol, Kim, Sung Kyung, Yoon, Chul Sik
• Granted Patent: US 8,649,334 B2
• Time in Patent Office: Days
• US Class Current: 370/329
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames

Abstract

The present invention relates to a radio resource reallocation method based on the circuit mode. In order to efficiently use the radio resource in the packet-based data transmission system, a circuit mode radio resource is reallocated based on a rearrangement information element and a rearrangement counter information element by using the circuit mode. Accordingly, an unused region of the discontinuous radio resource that can be generated by resource de-allocation and resource change can be eliminated, and a resource allocation mismatch that can be generated by a MAP receiving error can be solved.

Claims

1. A method for a base station to reallocate a resource comprising:

generating a rearrangement information element including slot offset information and slot shift information of a fixed radio resource to be rearranged;

transmitting the rearrangement information element to a mobile station; and

shifting a slot of the fixed radio resource by the slot shift information to reallocate a resource to the mobile station.

2. The method of claim 1, wherein

the slot offset information is information at a point where a discontinuous region of the fixed radio resource that is allocated before the radio resource to be rearranged is rearranged starts.

3. The method of claim 2, wherein

the slot shift information corresponds to the size of the discontinuous region.

4. A method for a mobile station to receive a resource from a base station comprising:

receiving a MAP including a rearrangement information element including a first slot offset for indicating information on a fixed radio resource to be rearranged;

comparing the first slot offset and a second slot offset that corresponds to the resource that is currently in use; and

receiving and using a new fixed radio resource or using the resource that is currently in use depending on the comparison result.

5. The method of claim 4, wherein

the rearrangement information element further includes slot shift information of the fixed radio resource to be rearranged.

6. The method of claim 5, wherein

the using further includes using the fixed radio resource that is shifted by the slot shift information when the first slot offset is less than or equal to the second slot offset.

7. The method of claim 5, wherein

the using further includes using the resource that is currently in use when the first slot offset is greater than the second slot offset.

8. A method for a base station to reallocate a resource comprising:

generating a rearrangement information element including information on a fixed radio resource to be rearranged;

increasing a rearrangement counter when the rearrangement information element is generated; and

transmitting a MAP including a rearrangement counter information element including the rearrangement counter.

9. The method of claim 8, further including, after transmitting the MAP,

when receiving a message for notifying failure of receiving the MAP from the mobile station, retransmitting a MAP including a rearrangement information element including information on the fixed radio resource to be rearranged to a mobile station.

10. A method for a mobile station to receive a resource from a base station comprising:

receiving a MAP including a rearrangement counter information element from the base station; and

receiving a new fixed radio resource based on a rearrangement counter value included in the rearrangement counter information element.

11. The method of claim 10, wherein

the receiving of the new fixed radio resource includes:

receiving a MAP from the base station, and determining whether the MAP includes a rearrangement information element for allocating the new fixed radio resource; and

receiving the new fixed radio resource based on the rearrangement information element when the MAP includes the rearrangement information element.

12. The method of claim 11, wherein

the MAP received error message is transmitted to the base station by using one of a channel quality indicator channel (CQICH), a hybrid automatic repeat request (HARQ) feedback, and an uplink burst.

13. The method of claim 10, further comprising:

using the resource that is currently in use when the MAP does not include the rearrangement counter information element.