System and Method for Reliable Transmission in Communications Systems

Patent metadata

Field	Value
Publication number	US-2018123767-A1
Application number	US-201715792411-A
Country	US
Kind code	A1
Filing date	Oct 24, 2017
Priority date	Nov 2, 2016
Publication date	May 3, 2018
Grant date	—

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.

First claim

What is claimed is:

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).

Assignees

• Huawei Tech Co Ltd

Inventors

• Islam Toufiqul
• Zhang Peng
• Lyu Yongxia

Classifications

• H04L5/0055

  Physical resource allocation for ACK/NACK (for physical mapping arrangements in ARQ protocols H04L1/1861) · CPC title

• H04L67/12

  specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks · CPC title

• H04L1/189

  Transmission or retransmission of more than one copy of a message · CPC title

• H04L1/1864

  ARQ related signaling (H04L1/1607 takes precedence) · CPC title

• H04L1/1819

  with retransmission of additional or different redundancy · CPC title