Mobile Communication System, Mobile Station, Wireless Base Station, and Wireless Line Control Station

• US 20080056182A1
• Filed: 11/09/2005
• Published: 03/06/2008
• Est. Priority Date: 11/09/2004
• Status: Abandoned Application

• Current Assignee: NTT Docomo Incorporated (Nippon Telegraph and Telephone Corporation)
• Original Assignee: NTT Docomo Incorporated (Nippon Telegraph and Telephone Corporation)
• Inventors: Umesh, Anil, Nakamura, Takehiro, Usuda, Masafumi
• Application Number:
  US11/667,266
• Publication Number:
  US 20080056182A1
• Time in Patent Office: Days
• US Class Current: 370/329
• CPC Class Codes: H04L 1/0007 by modifying the frame length
• CPC Class Codes: H04L 1/1607 Details of the supervisory signal
• CPC Class Codes: H04L 1/1803 Stop-and-wait protocols
• CPC Class Codes: H04L 1/1812 Hybrid protocols; Hybrid automatic repeat request [HARQ]
• CPC Class Codes: H04L 1/1825 Adaptation of specific ARQ protocol parameters according to transmission conditions
• CPC Class Codes: H04L 1/1845 Combining techniques, e.g. code combining
• CPC Class Codes: H04L 1/1887 Scheduling and prioritising arrangements
• CPC Class Codes: H04W 28/06 Optimizing the usage of the radio link, e.g. header compression, information sizing , discarding information system modifying transmission characteristic according to link quality by modifying frame length H04L1/0007; dynamic adaptation of the packet size for flow control or congestion control H04L47/365
• CPC Class Codes: H04W 52/286 during data packet transmission, e.g. high speed packet access [HSPA]

Abstract

In a mobile communication system, a data transmitting-side apparatus is configured to retransmit a transmission data block by using a data channel and a control channel according to a transmission acknowledgment signal transmitted from a data receiving-side apparatus. The data transmitting-side apparatus includes: a maximum number-of-retransmissions manager unit configured to manage a transmission power ratio between the data channel and the control channel or the transmission data block size to be associated with the maximum number of retransmissions of the transmission data block; and a retransmitter unit configured to retransmit the transmission data block, until the number of retransmissions of the transmission data block reaches the maximum number of retransmissions associated with the transmission power ratio of the transmission data block or the transmission data block size.

Claims

1. A mobile communication system in which a data transmitting-side apparatus is configured to retransmit a transmission data block by using a data channel and a control channel according to a transmission acknowledgment signal transmitted from a data receiving-side apparatus, wherein the data transmitting-side apparatus comprises:

a maximum number-of-retransmissions manager unit configured to manage a transmission power ratio between the data channel and the control channel or the transmission data block size to be associated with the maximum number of retransmissions of the transmission data block; and

a retransmitter unit configured to retransmit the transmission data block, until the number of retransmissions of the transmission data block reaches the maximum number of retransmissions associated with the transmission power ratio of the transmission data block or the transmission data block size.

2. The mobile communication system according to claim 1, wherein the maximum number-of-retransmissions manager unit is configured to set at least one of the maximum number of retransmissions to zero.

3. The mobile communication system according to claim 1, wherein the maximum number-of-retransmissions manager unit is configured to set, to zero, the maximum number of retransmissions of the transmission data block which is associated with the transmission power ratio or the transmission data block size smaller than a predetermined threshold value.

4. The mobile communication system according to claim 1, wherein the maximum number-of-retransmissions manager unit is configured to determine the transmission power ratio or the transmission data block size whose maximum number of retransmissions of the transmission data block is set to zero, in accordance with a link utilization state between the data transmitting-side apparatus and the data receiving-side apparatus.

5. The mobile communication system according to claim 1, wherein the maximum number-of-retransmissions manager unit is configured to determine the maximum number of retransmissions which is associated with the transmission power ratio of the transmission data block or the transmission data block size, in accordance with the link utilization state between the data transmitting-side apparatus and the data receiving-side apparatus.

6. The mobile communication system according to claim 1, wherein the maximum number-of-retransmissions manager unit is configured to set the maximum number of retransmissions of the transmission data block to be increased as the transmission power ratio or the transmission data block size increases.

7. The mobile communication system according to claim 1, further comprising:

a radio network controller configured to notify the-maximum number-of-retransmissions manager unit of the maximum number of retransmissions which is associated with the transmission power ratio of the transmission data block or the transmission data block size.

8. The mobile communication system according to claim 6, further comprising:

a radio network controller configured to notify the maximum number-of-retransmissions manager unit of the maximum transmission power ratio or the transmission data block size whose maximum number of retransmissions of the transmission data block is set to zero.

9. The mobile communication system according to claim 6, further comprising:

a radio network controller configured to notify the maximum number-of-retransmissions manager unit of the minimum transmission power ratio or the transmission data block size whose maximum number of retransmissions of the transmission data block is set to greater than or equal to one.

10. A mobile station configured to retransmit a transmission data block by using a data channel and a control channel according to a transmission acknowledgment signal transmitted from a radio base station comprising:

a maximum number-of-retransmissions manager unit configured to manage a transmission power ratio between the data channel and the control channel or a transmission data block size to be associated with the maximum number of retransmissions of the transmission data block; and

a retransmitter unit configured to retransmit the transmission data block, until the number of retransmissions of the transmission data block reaches the maximum number of retransmissions associated with the transmission power ratio of the transmission data block or the transmission data block size.

11. The mobile station according to claim 10, wherein the maximum number-of-retransmissions manager unit is configured to set at least one of the maximum number of retransmissions to zero.

12. The mobile station according to claim 10, wherein the maximum number-of-retransmissions manager unit is configured to set, to zero, the maximum number of retransmissions of the transmission data block which is associated with the transmission power ratio or the transmission data block size smaller than a predetermined threshold value.

13. The mobile station according to claim 10, wherein the maximum number-of-retransmissions manager unit is configured to determine the transmission power ratio or the transmission data block size whose maximum number of retransmissions of the transmission data block is set to zero, in accordance with a link utilization state between the mobile station and the radio base station.

14. The mobile station according to claim 10, wherein the maximum number-of-retransmissions manager unit is configured to determine the maximum number of retransmissions which is associated with the transmission power ratio of the transmission data block or the transmission data block size, in accordance with the link utilization state between the mobile station and the radio base station.

15. The mobile station according to claim 10, wherein the maximum number-of-retransmissions manager unit is configured to set the maximum number of retransmissions of the transmission data block to be increased as the transmission power ratio or the transmission data block size increases.

16. A radio base station configured to retransmit a transmission data block by using a data channel and a control channel according to a transmission acknowledgment signal transmitted from a mobile station, comprising:

a maximum number-of-retransmissions manager unit configured to manage a transmission power ratio between the data channel and the control channel or a transmission data block size to be associated with the maximum number of retransmissions of the transmission data block; and

a retransmitter unit configured to retransmit the transmission data block, until the number of retransmissions of the transmission data block reaches the maximum number of retransmissions associated with the transmission power ratio of the transmission data block or the transmission data block size.

17. The radio base station according to claim 16, wherein the maximum number-of-retransmissions manager unit is configured to set at least one of the maximum number of retransmissions to zero.

18. The radio base station according to claim 16, wherein the maximum number-of-retransmissions manager unit is configured to set, to zero, the maximum number of retransmissions of the transmission data block which is associated with the transmission power ratio or the transmission data block size smaller than a predetermined threshold value.

19. The radio base station according to claim 16, wherein the maximum number-of-retransmissions manager is configured to determine the transmission power ratio or the transmission data block size whose maximum number of retransmissions of the transmission data block is set to zero, in accordance with a link utilization state between the mobile station and the radio base station.

20. The radio base station according to claim 16, wherein the maximum number-of-retransmissions manager unit is configured to determine the maximum number of retransmissions which is associated with the transmission power ratio of the transmission data block or the transmission data block size, in accordance with the link utilization state between the mobile station and the radio base station.

21. The radio base station according to claim 16, wherein the maximum number-of-retransmissions manager unit is configured to set the maximum number of retransmissions of the transmission data block to be increased as the transmission power ratio or the transmission data block size increases.

22. A radio network controller used in a mobile communication system in which a data transmitting-side apparatus is configured to retransmit a transmission data block by using a data channel and a control channel according to a transmission acknowledgment signal transmitted from a data receiving-side apparatus, comprising:

an notifying unit configured to notify the data transmitting-side apparatus of the maximum number of retransmissions of the transmission data block which is associated with a transmission power ratio between the data channel and the control channel or a transmission data block size, wherein

the data transmitting-side apparatus is configured to retransmit the transmission data block, until the number of retransmissions of the transmission data block reaches the maximum number of retransmissions associated with the transmission power ratio of the transmission data block or the transmission data block size.