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

• US 9,026,879 B2
• Filed: 11/15/2013
• Issued: 05/05/2015
• Est. Priority Date: 10/11/2000
• Status: Expired due to Term

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Varma, Subir
• Primary Examiner(s): ABRAHAM, ESAW T
• Application Number:
  US14/082,042
• Publication Number:
  US 20140143627A1
• Time in Patent Office: 536 Days
• Field of Search: 714/748
• US Class Current: 714/748
• 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

A method and an apparatus for 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, are provided. 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 a wireless communication link with each independent CPE.

Claims

1. A method for controlling automatic retransmission between a base station (BS) and customer premises equipment (CPE) in a wireless communication system, the method comprising:

determining, by the BS, a parameter for automatic retransmission based on communication between the BS and the CPE in a previous frame;

generating, by the BS, a frame including the determined parameter for automatic retransmission; and

transmitting, by the BS, the frame to the CPE.

2. The method of claim 1, wherein the determining of the parameter for automatic transmission comprises:

determining, by the BS, communication parameter and transmitting the communication parameter;

communicating, by the BS, with the CPE using the communication parameter;

determining, by the BS, a characteristic of a link between the BS and the CPE based on the communicating with the CPE; and

determining, by the BS, the parameter for automatic retransmission based on the characteristic of a link between the BS and the CPE.

3. The method of claim 1, wherein the parameter for automatic retransmission is determined independently for an upstream portion of the frame and a downstream portion of the frame.

4. The method of claim 1, wherein the parameter for automatic retransmission is determined independently for each CPE.

5. The method of claim 1, wherein the parameter for automatic retransmission is determined based on a number of bytes successfully sent in the communication between the BS and the CPE in a previous frame.

6. The method of claim 1, further comprising:

allocating, by the BS, at least one acknowledgement time slot within upstream of the frame to the CPE.

7. The method of claim 6, wherein the at least one acknowledgement time slot is shared resource with at least one other CPE.

8. The method of claim 1, further comprising:

setting, by the BS, a first timer when the BS receives a Non-ACKnowledgement (NACK) message from the CPE; and

discarding, by the BS, subsequent ACKnowledge (ACK)NACK messages from the CPE during the first timer.

9. The method of claim 1, further comprising:

setting, by the BS, a second timer when the BS receives an invalid message for retransmission from the CPE; and

discarding, by the BS, subsequent all messages from the CPE during the second timer.

10. The method of claim 1, wherein the parameter for automatic retransmission comprises physical parameter and Media Access Control (MAC) parameter, the physical parameter comprises at least one of symbol transmission rate, a number of payload data bits assigned per symbol, a number of error detection bits assigned per symbol and error correction bits assigned per symbol, the MAC parameter comprises at least one of a number of payload data bytes assigned per message, a frequency of ACK/NACK messages, a number of retransmission attempts and, a fraction of a communication link allocated to downstream versus upstream communication.

11. A method for automatic retransmission between a base station(BS) and customer premises equipment (CPE) in a wireless communication system, the method comprising:

receiving, by the CPE, a frame including parameter for automatic retransmission; and

performing, by the CPE, the automatic retransmission based on the parameter for automatic retransmission,

wherein the parameter for automatic retransmission is determined, by the BS, based on communication between the BS and the CPE in a previous frame.

12. The method of claim 11, the determining of the parameter for automatic retransmission comprises:

determining a communication parameter and transmitting the communication parameter;

communicating with the CPE using the communication parameter;

determining a characteristic of a link between the BS and the CPE based on the communicating with the CPE; and

determining the parameter for automatic retransmission based on the characteristic of a link between the BS and the CPE.

13. The method of claim 11, wherein the parameter for automatic retransmission is determined independently for an upstream portion of the frame and a downstream portion of the frame.

14. The method of claim 11, wherein the parameter for automatic retransmission is determined independently for each CPE.

15. The method of claim 11, wherein the parameter for automatic retransmission is determined based on a number of bytes successfully sent in the communication between the BS and the CPE in a previous frame.

16. The method of claim 11, further comprising:

receiving, by the CPE, allocation of at least one acknowledgement time slot within upstream of the frame from the BS.

17. The method of claim 16, wherein the at least one acknowledgement time slot is shared resource with at least one other CPE.

18. The method of claim 11, wherein the parameter for automatic retransmission comprises physical parameter and MAC parameter, the physical parameter comprises at least one of symbol transmission rate, a number of payload data bits assigned per symbol, a number of error detection bits assigned per symbol and error correction bits assigned per symbol, the MAC parameter comprises at least one of a number of payload data bytes assigned per message, a frequency of ACKnowledge (ACK)/Non-ACKnowledge (NACK) messages, a number of retransmission attempts, and a fraction of a communication link allocated to downstream versus upstream communication.