System and Method for Reliable Transmission in Communications Systems

• US 20180123767A1
• Filed: 10/24/2017
• Published: 05/03/2018
• Est. Priority Date: 11/02/2016
• Status: Active Application

• Current Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Original Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Inventors: Islam, Toufiqul, Zhang, Peng, Lyu, Yongxia
• Application Number:
  US15/792,411
• Publication Number:
  US 20180123767A1
• Time in Patent Office: Days
• CPC Class Codes: H04L 1/0026 Transmission of channel quality 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 1/1816 with retransmission of the same, encoded, message
• CPC Class Codes: H04L 1/1819 with retransmission of additional or different redundancy
• CPC Class Codes: H04L 1/1825 Adaptation of specific ARQ protocol parameters according to transmission conditions
• CPC Class Codes: H04L 1/1864 ARQ related signaling H04L1/1607 takes precedence
• CPC Class Codes: H04L 1/189 Transmission or retransmission of more than one copy of a message
• CPC Class Codes: H04L 5/0055 Physical resource allocation for ACK/NACK for physical mapping arrangements in ARQ protocols H04L1/1861
• CPC Class Codes: H04L 5/0057 Physical resource allocation for CQI
• CPC Class Codes: H04L 67/12 specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks

Abstract

A method for communications includes transmitting, by a transmission point (TP) to a reception point (RP), a data packet, receiving, by the TP from the RP, a first feedback indicating that the data packet was unsuccessfully decoded, wherein the first feedback comprises a confidence indicator indicating a confidence level of the RP in decoding the data packet, and transmitting, by the TP to the RP, a plurality of retransmissions of the data packet.

Claims

1. A method for communications, the method comprising:

transmitting, by a transmission point (TP) to a reception point (RP), a data packet;

receiving, by the TP from the RP, a first feedback indicating that the data packet was unsuccessfully decoded, wherein the first feedback comprises a confidence indicator indicating a confidence level of the RP in decoding the data packet; and

transmitting, by the TP to the RP, a plurality of retransmissions of the data packet.

2. The method of claim 1, wherein a number of retransmissions in the plurality of retransmissions of the data packet is determined in accordance with the first feedback.

3. The method of claim 1, wherein a number of retransmissions in the plurality of retransmissions of the data packet is also determined in accordance with historical information.

4. The method of claim 3, wherein historical information comprises at least one of historical transmission/reception failures or successes of the TP, or historical transmission/reception failures or successes of other devices.

5. The method of claim 1, wherein the confidence indicator is determined based on at least one of a channel quality feedback information or a decoder status information.

6. The method of claim 5, wherein the channel quality feedback information comprises information associated with at least one of a signal to noise ratio (SNR), a signal plus interference to noise ratio (SINR), a reference signal received power (RSRP), or a reference signal received quality (RSRQ), of a link between the TP and the RP, and wherein the decoder status information comprises information associated with a log likelihood ratio (LLR).

7. The method of claim 1, further comprising transmitting, by the TP before receiving the first feedback, at least one blind retransmission of the data packet.

8. The method of claim 7, wherein the data packet and the at least one blind retransmission of the data packet contain the same data.

9. A method for communications, the method comprising:

receiving, by a reception point (RP) from a transmission point (TP), a data packet;

transmitting, by the RP to the TP, a feedback indicating that the data packet was unsuccessfully decoded, wherein the feedback comprises a confidence indicator indicating a confidence level of the RP in decoding the data packet; and

receiving, by the RP from the TP, a plurality of retransmissions of the data packet.

10. The method of claim 9, wherein a number of retransmissions in the plurality of retransmissions of the data packet is determined in accordance with the feedback.

11. The method of claim 9, further comprising receiving, by the RP, at least one blind retransmission of the data packet prior to transmitting the feedback.

12. The method of claim 11, wherein the data packet and the at least one blind retransmission of the data packet contain same data.

13. The method of claim 9, wherein the confidence indicator is determined based on at least one of a channel quality feedback information comprising information associated with at least one of a signal to noise ratio (SNR), a signal plus interference to noise ratio (SINR), a reference signal received power (RSRP), or a reference signal received quality (RSRQ), of a link between the TP and the RP, or a decoder status information comprising information associated with a log likelihood ratio (LLR).

14. A transmission point (TP) adapted to perform communications, the TP comprising:

a processor; and

a computer readable storage medium storing programming for execution by the processor, the programming including instructions to configure the TP to;

transmit a data packet to a reception point (RP),

receive a first feedback from the RP, the first feedback indicating that the data packet was unsuccessfully decoded, wherein the first feedback comprises a confidence indicator indicating a confidence level of the RP in decoding the data packet, and

transmit a plurality of retransmissions of the data packet to the RP.

15. The TP of claim 14, wherein a number of retransmissions in the plurality of retransmissions of the data packet is determined in accordance with the first feedback.

16. The TP of claim 14, wherein the programming includes instructions to configure the TP to determine a number of retransmissions in the plurality of retransmissions of the data packet in accordance with historical information.

17. The TP of claim 14, wherein the confidence indicator is determined based on at least one of a channel quality feedback information or decoder status information.

18. The TP of claim 17, wherein the channel quality feedback information comprises information associated with at least one of a signal to noise ratio (SNR), a signal plus interference to noise ratio (SINR), a reference signal received power (RSRP), or a reference signal received quality (RSRQ), of a link between the TP and the RP, and wherein the decoder status information comprises information associated with a log likelihood ratio (LLR).

19. A reception point (RP) adapted to perform communications, the RP comprising:

a processor; and

a computer readable storage medium storing programming for execution by the processor, the programming including instructions to configure the RP to;

receive a data packet from a transmission point (TP),

transmit a feedback to the TP, the feedback indicating that the data packet was unsuccessfully decoded, wherein the feedback comprises a confidence indicator indicating a confidence level of the RP in decoding the data packet, and

receive a plurality of retransmissions of the data packet from the TP.

20. The RP of claim 19, wherein the programming includes instructions to configure the RP to receive at least one blind retransmission of the data packet prior to transmitting the feedback.

21. The RP of claim 19, wherein a number of retransmissions in the plurality of retransmissions of the data packet is determined in accordance with the feedback.

22. The RP of claim 19, wherein the confidence indicator is determined based on at least one of a channel quality feedback information comprising information associated with at least one of a signal to noise ratio (SNR), a signal plus interference to noise ratio (SINR), a reference signal received power (RSRP), or a reference signal received quality (RSRQ), of a link between the TP and the RP, or a decoder status information comprising information associated with a log likelihood ratio (LLR).