Radio resource reallocating method for circuit mode

• US 8,649,334 B2
• Filed: 05/30/2008
• Issued: 02/11/2014
• Est. Priority Date: 05/30/2007
• Status: Active Grant

• Current Assignee: Electronics and Telecommunications Research Institute, Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Kim, Sung Kyung, Chang, Sung Cheol, Lim, Kwang Jae, Yoon, Chul Sik
• Primary Examiner(s): Ferris, Derrick
• Assistant Examiner(s): Choudhury, Faisal
• Application Number:
  US12/522,682
• Publication Number:
  US 20100020758A1
• Time in Patent Office: 2,083 Days
• Field of Search: 370/329
• 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 rearrangement information including slot offset information of a discontinuous region of a fixed radio resource and slot shift information of the fixed radio resource to be rearranged;

transmitting the rearrangement information to a mobile station; and

shifting a slot of the fixed radio resource based on the slot offset information and the slot shift information to reallocate a resource to the mobile station,

wherein the slot shift information includes the size of the discontinuous region, and

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

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

receiving a MAP including rearrangement information including a first slot offset for indicating information on a start point of a fixed radio resource after a discontinuous region of the fixed radio resource;

comparing the first slot offset and a second slot offset that corresponds to a slot offset of 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,

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.

3. The method of claim 2, wherein the rearrangement information further includes slot shift information of the fixed radio resource to be rearranged.

4. The method of claim 2, 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.

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

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

increasing a rearrangement counter when the rearrangement information is generated;

transmitting a MAP including a rearrangement counter information including the rearrangement counter; and

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

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

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

transmitting a message for notifying failure of receiving the MAP to the base station when failing to receive the MAP;

receiving a MAP including the rearrangement counter information including information which is retransmitted from the base station after transmitting the message for notifying failure of receiving the MAP to the base station; and

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

wherein, the rearrangement counter value is increased by 1 when a rearrangement of the new fixed radio resource occurs.

7. The method of claim 6, wherein the receiving of the new fixed radio resource includes:

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

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

8. The method of claim 7, 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.

9. The method of claim 6, further comprising:

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

10. A method for a mobile station to reallocate a resource, the method comprising:

receiving, from a base station, rearrangement information including slot offset information of a discontinuous region of a fixed radio resource and slot shift information of the fixed radio resource to be rearranged; and

shifting a slot of the fixed radio resource based on the slot offset information and the slot shift information to reallocate a resource,

wherein the slot shift information includes the size of the discontinuous region, and

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