Method of retransmitting data frame and network apparatus using the method

• US 20050204250A1
• Filed: 12/09/2004
• Published: 09/15/2005
• Est. Priority Date: 01/30/2004
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Hong, Jin-woo, Sung, Hyun-ah, Bae, Dae-gyu
• Granted Patent: US 7,434,133 B2
• Time in Patent Office: Days
• US Class Current: 714/748
• CPC Class Codes: H04L 1/165 Variable formats
• CPC Class Codes: H04L 12/64 Hybrid switching systems

Abstract

A method of retransmitting a data frame and a network apparatus using the method are provided. In the method performed in a wireless network, a first network apparatus transmits a data frame requesting a response frame. A second network apparatus determines a type of response frame according to a reception mode of the data frame. The second network apparatus transmits the determined type of response frame to the first network apparatus. The first network apparatus retransmits the data frame according to the type of the response frame transmitted to the first network apparatus.

Claims

1. A method of retransmitting a data frame in a wireless network, comprising:

a first network apparatus transmitting a data frame requesting a response frame to a second network apparatus;

the second network apparatus determining a reception mode of the data frame

the second network apparatus transmitting a response frame to the first network apparatus, wherein the response frame is of a first type or a second type based on the reception mode of the data frame; and

the first network apparatus retransmitting the data frame according to a type of the response frame transmitted to the first network apparatus.

2. The method of claim 1, wherein the reception mode is one of

a first reception mode indicating that the data frame was received normally by the second network apparatus, and

a second reception mode indicating that the data frame was never received or was received abnormally by the second network apparatus.

3. The method of claim 2, wherein

the second network apparatus transmits a response frame of the first type, indicating that the data frame was received normally, when the data frame is of the first reception mode, and

the second network apparatus transmits a response frame of the second type, indicating the data frame was never received or was received abnormally, a when the data frame is of the second reception mode.

4. The method of claim 3, wherein:

the first network apparatus retransmits the data frame to the second network apparatus when the response frame transmitted to the first network apparatus is of the second type.

5. The method of claim 4, wherein:

the first network apparatus does not retransmit the data frame to the second network apparatus when the response frame transmitted to the first network apparatus is of the first type

6. The method of claim 4, wherein:

the wireless network conforms to the IEEE 802.15.3 standard;

the response frame has an “

Imm-ACK”

frame structure conforming to the IEEE 802.15.3 standard; and

a response frame of the first type is distinguished from a response frame of the second type using a value of a frame type field comprised in the 1 mm-ACK frame.

7. A method of retransmitting a data frame in a wireless network, comprising:

a first network apparatus transmitting a plurality of data frames to a second network apparatus;

the first network apparatus transmitting a request frame requesting a response frame to the second network apparatus;

the second network apparatus determining a reception mode of each of the plurality of data frames transmitted by the first network apparatus;

the second network apparatus transmitting a response frame to the first network apparatus, wherein the response frame is of a first type or a second type based on the reception modes of the plurality of data frames; and

the first network apparatus, in response to the reception of the response frame, performing data frame retransmission according to the information contained in the response frame.

8. The method of claim 7, wherein the reception mode comprises

a first reception mode indicating that the data frame was received normally, or

a second reception mode indicating that the data frame was never received or was received abnormally.

9. The method of claim 8, wherein:

the second network apparatus transmits a response frame of a first type, indicating the non-reception or the abnormal reception of those data frames of the second reception mode when, of the plurality of data frames transmitted by the first network apparatus, the number of data frames of the first reception mode is greater than the number of data frames of the second reception mode, and

the second network apparatus transmits a response frame of a second type, indicating normal reception of those data frames of the first reception mode when, of the plurality of data frames transmitted by the first network apparatus, the number of data frames of the second reception mode is greater than the number of data frames of the first reception mode.

10. The method of claim 9, wherein:

the response frame of the first type comprises;

an ACKed field indicating the number of data frames of the first mode, and

for each of the data frames of the second mode, a corresponding ID field including identification information for the data frame; and

the response frame of the second type comprises;

a NACKed field indicating the number of data frames of the second mode, and

for each of the data frames of the first mode, a corresponding ID field including identification information for the data frame.

11. The method of claim 10, wherein:

when the response frame is of the first type, the first network apparatus retransmits those data frames of the second reception mode corresponding to the identification information in the ID fields; and

when the response frame is of the second type, the first network apparatus retransmits those data frames of the second reception mode corresponding to the information in the NACKed field.

12. The method of claim 11, wherein:

the wireless network conforms to the IEEE 802.15.3 standard;

the response frame has a “

Delayed ACK”

frame structure conforming to the IEEE 802.15.3 standard; and

a response frame of the first type is distinguished from a response frame of the second type using a value of a frame type field comprised in a MAC header in the Delayed ACK frame.

13. A network apparatus in a wireless network, comprising:

a frame transceiver which receives a data frame, requesting a response frame, from an external apparatus and which transmits a response frame generated by a response frame generator;

a frame error inspector which determines whether there is an error in the data frame and determines that the data frame is of a first reception mode if there is no error in the data frame or determines that the data frame is of a second reception mode if there is an error in the data frame; and

the response frame generator which generates a response frame;

wherein

if the data frame is of the first reception mode, the response frame is of a first type, indicating the normal reception of the data frame

if the data frame is of the second reception mode, the response frame is of a second type, indicating the non-reception or the abnormal reception of the data frame.

14. A network apparatus in a wireless network, comprising:

a frame transceiver configured such that, when a data frame is not received or is abnormally received from an external apparatus, the frame transceiver transmits a response frame indicating the non-reception or the abnormal reception of the data frame to the external apparatus and then newly receives the data frame from the external apparatus.

15. The apparatus of claim 14, wherein:

the wireless network conforms to the IEEE 802.15.3 standard,

the response frame has an “

1 mm-ACK”

frame structure conforming to the IEEE 802.15.3 standard and

the response frame is identified using a value of a frame type field comprised in the Imm-ACK frame.

16. A network apparatus in a wireless network, comprising:

a frame transceiver configured to

receive a plurality of data frames from an external apparatus,

transmit a response frame to the external apparatus, and

then newly receive at least one data frame,

wherein the response frame is of a first type or a second type based on a reception mode of the plurality of data frames.

17. The network apparatus of claim 16, wherein the reception mode is one of:

a first reception mode indicating that the data frame was received normally, and

a second reception mode indicating that the data frame was never received or was received abnormally.

18. The network apparatus of claim 17, wherein

the transceiver transmits a response frame of a first type, indicating the non-reception or the abnormal reception of those data frames of the second reception mode, when, of the plurality of data frames received by the transceiver, the number of data frames of the first reception mode is greater than the number of data frames of the second reception mode, and

the transceiver transmits a response frame of a second type, indicating the normal reception of those data frames of the first reception mode, when, of the plurality of data frames received by the transceiver, the number of data frames of the second reception mode is greater than the number of data frames of the first reception mode.

19. The apparatus of claim 18, wherein:

the response frame of the first type comprises;

an ACKed field indicating the number of data frames of the first mode, and

for each of the data frames of the second mode, a corresponding ID field including identification information for the data frame; and

the response frame of the second type comprises;

a NACKed field indicating the number of data frames of the second mode, and

for each of the data frames of the first mode, a corresponding ID field including identification information for the data frame.

20. The network apparatus of claim 19, wherein

when the response frame is of the first type, the transceiver receives a retransmission of those data frames of the second reception mode corresponding to the identification information in the ID fields;

and

when the response frame is of the second type, the transceiver receives a retransmission of those data frames of the second reception mode corresponding to the information in the NACKed field.

21. The network apparatus of claim 19, wherein:

the wireless network conforms to the IEEE 802.15.3 standard,

the response frame has a “

Delayed ACK”

frame structure conforming to the IEEE 802.15.3 standard, and

a response frame of the first type is distinguished from a response frame of the second type using a value of a frame type field comprised in a MAC header in the Delayed ACK frame.