Automatic retransmission and error recovery for packet oriented point-to-multipoint communication

• US 20060268885A1
• Filed: 04/26/2006
• Published: 11/30/2006
• Est. Priority Date: 10/11/2000
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Aperto Networks
• Inventors: Varma, Subir
• Granted Patent: US 8,023,420 B2
• Time in Patent Office: Days
• US Class Current: 370/394
• CPC Class Codes: H04L 1/0006 by adapting the transmission format
• CPC Class Codes: H04L 1/0025 Transmission of mode-switching indication
• CPC Class Codes: H04L 1/08 by repeating transmission, e.g. Verdan system H04L1/1858 and H04L1/189 take precedence
• CPC Class Codes: H04L 1/1607 Details of the supervisory signal
• CPC Class Codes: H04L 1/1854 Scheduling and prioritising arrangements
• CPC Class Codes: H04L 1/1867 Arrangements specially adapted for the transmitter end
• CPC Class Codes: H04L 1/1883 using multiple timers
• CPC Class Codes: H04L 1/1887 Scheduling and prioritising arrangements
• CPC Class Codes: H04L 2001/0093 Point-to-multipoint
• CPC Class Codes: H04W 72/20 Control channels or signalling for resource management

Abstract

Point to multipoint wireless communication, including automatic retransmission and error recovery for packet oriented point to multipoint communication, which integrates adaptive and dynamic responsiveness for parameters for automatic retransmission using wireless communication. A wireless communication link is divided into a downstream portion and an upstream portion. Parameters are selected for automatic retransmission independently for the downstream portion and the upstream portion of the wireless communication link. A BSC controls the selection of parameters for automatic retransmission for all CPE within a cell. As part of a TDD frame, in which the BSC and the CPE share communication bandwidth using a TDMA technique, the BSC includes its selection of parameters for automatic retransmission to be used by CPE within a control section of the TDD frame. The BSC dynamically and adaptively determines new selected parameters for automatic retransmission, in response to conditions of a wireless communication link with each independent CPE. The BSC dynamically and adaptively allocates acknowledgement time slots within the upstream portion of the TDD frame, for use by each selected CPE. The BSC allocates some portion of the upstream bandwidth as a shared resource and some portion of the upstream bandwidth as unshared when there are messages received but not yet acknowledged. The BSC dynamically and adaptively response to acknowledgement and non-acknowledgement messages from each selected CPE, to integrate the automatic retransmission protocol with the TDD frame and the TDMA technique used within that frame.

Claims

1-24. -24. (canceled)

25. A method of controlling selection of parameters for automatic retransmission in a point-to-multipoint wireless communication link having an upstream portion and a downstream portion, the method comprising the steps of:

selecting physical and media access control (MAC) parameters for automatic retransmission, the physical and MAC parameters for the downstream portion being selected independently for each customer premises equipment of the plurality of customer premises equipment and physical and MAC parameters for the upstream portion being selected independently for said each customer premises equipment;

including the physical and MAC parameters in a control section of a frame, the control section for sending control information downstream;

wherein the physical and MAC parameters are dynamically selected based on previous communication between the base station controller and said each customer premises equipment; and

allocating a first part of the upstream portion as shared and some part of the upstream portion as unshared when there are messages received but not yet acknowledged.

26. The method of claim 25, further comprising the step of sending the control section of the frame downstream from the base station controller to the customer premises equipment, whereby the base station controller controls physical and MAC parameters for both upstream and downstream retransmission.

27. The method of claim 25, further comprising dynamically and adaptively determining new selected physical and MAC parameters for automatic retransmission, wherein the base station controller determines the new selected physical and MAC parameters in response to conditions of a wireless communication link with said each CPE.

28. The method of claim 27, wherein the physical and MAC parameters for automatic retransmission are selected responsive to a number of bytes successfully sent.

29. A base station controller capable of communicating with a plurality of customer premises equipment, the base station controller comprising:

a transmitter capable of communicating information downstream to the customer premises equipment;

a receiver capable of receiving upstream information communicated by the customer premises equipment;

a processor capable of executing instructions to control the transmitter and the receiver; and

a memory storing a set of instructions, the memory being coupled to the processor, the set of instructions comprising instructions that, when executed by the processor, cause the processor to

select physical and MAC parameters for automatic retransmission of information between the base station controller and the customer premises equipment, the physical and MAC parameters for downstream retransmission, and physical and MAC parameters for upstream retransmission;

include the physical and MAC parameters in a control section of a frame, the control section being for communicating control information downstream;

wherein the instructions that cause the processor to select comprise instructions that, when executed by the processor, cause the processor to select dynamically the physical and MAC parameters for automatic retransmission based on previous communication between the base station controller and said each customer premises equipment; and

allocate a first part of the upstream information as shared and some part of the upstream information as unshared when there are messages received but not yet acknowledged.

30. The base station controller according to claim 29, wherein the set of instructions further comprises instructions that, when executed by the processor, cause the processor to direct the transmitter to send the control section of the frame downstream from the base station controller to the customer premises equipment, whereby the base station controller controls the physical and MAC parameters for both upstream and downstream retransmission.

31. The base station controller according to claim 29, wherein the set of instructions further comprises instructions that, when executed by the processor, cause the processor to determine dynamically and adaptively new selected physical and MAC parameters for automatic retransmission, wherein the base station controller determines the new selected physical and MAC parameters in response to conditions of a wireless communication link with said each customer premises equipment.

32. The base station controller according to claim 31, wherein the instructions that, when executed by the processor, cause the processor to select the physical and MAC parameters for automatic retransmission cause the processor to select the physical and MAC parameters responsive to a number of bytes successfully sent between the base station controller and the customer premises equipment.

33. An article of manufacture comprising a memory with a set of instructions stored in the memory, the set of instructions comprising instructions that, when executed by a processor capable of causing receiver and transmitter of a base station controller to communicate with a plurality of customer premises equipment, cause the processor to

select physical and MAC parameters for automatic retransmission of information between the base station controller and the customer premises equipment, the physical and MAC parameters for downstream retransmission, and physical and MAC parameters for upstream retransmission;

include the physical and MAC parameters in a control section of a frame, the control section being for sending control information downstream;

wherein the instructions that cause the processor to select comprise instructions that, when executed by the processor, cause the processor to select dynamically the physical and MAC parameters for automatic retransmission based on previous communication between the base station controller and said each customer premises equipment; and

allocate a first part of upstream information as shared and some part of the upstream information as unshared when there are messages received but not yet acknowledged.

34. The article of manufacture according to claim 33, wherein the set of instructions further comprises instructions that, when executed by the processor, cause the processor to direct the transmitter to send the control section of the frame downstream from the base station controller to the customer premises equipment, whereby the base station controller controls the physical and MAC parameters for both upstream and downstream retransmission.

35. The article of manufacture according to claim 33, wherein the set of instructions further comprises instructions that, when executed by the processor, cause the processor to determine dynamically and adaptively new selected physical and MAC parameters for automatic retransmission, wherein the base station controller determines the new selected physical and MAC parameters in response to conditions of a wireless communication link with said each customer premises equipment.

36. The article of manufacture according to claim 33, wherein the instructions that, when executed by the processor, cause the processor to select the physical and MAC parameters for automatic retransmission cause the processor to select the physical and MAC parameters responsive to a number of bytes successfully sent between the base station controller and the customer premises equipment.