US 11,108,500 B2 · Latency reduction by fast forward in multi-hop communication systems

Abstract

Latency reduction by fast forward (FF) in multi-hop communication device and/or systems is disclosed. Packets may be received and forwarded using a codeword (CW)-based approach with and/or without per-CW CRC. A FF session may have a flow ID and packets may have sequence numbers. Packets targeted for FF may be divided into independently decodable CWs that may be transmitted in the next hop, for example, as soon as the destination is determined without waiting for an entire packet's arrival and/or for CRC verification. Low latency (e.g. FF) traffic may be indicated. CW-based FF may be extensible for an e2e RAN path from a WTRU to the last access node in a RAN. Intermediate metrics, a packet CRC and/or a per-CW CRC may be utilized for data integrity. HARQ and/or CW retransmission procedures may be implemented between network nodes for error handling.

Claims18

Dependent claims

A base station in communication with a communication network, the base station comprising:

a memory;
a receiver, the receiver configured at least to:
receive a transmission of a packet from a first node, wherein the packet comprises a first codeword (CW) and a second CW;
a processor, the processor configured at least to:
determine an error associated with the first CW;
and
a transmitter, the transmitter configured at least to:
transmit a null CW based on the determined error, wherein the null CW is transmitted as a replacement for the first CW, wherein the null CW is transmitted to a second node before the second CW is decoded, and the first node and the second node are different.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application

16/315,234Filed 1 Jul 2017 · us provisional application

Priority

5 Jul 2016

Published

US 2019/0165890 A130 May 2019

Granted

31 Aug 2021

Term ends

Not estimatedThe source records don’t support an estimate.

Classification17 codes

H04L 1/0063
Error detection codes: single parity check
H03M 13/1102
Using multiple parity bits: codes on graphs and decoding on graphs, e.g. low-density parity check [LDPC] codes
H04B 7/0617
Of weighted versions of same signal: for beam forming
H04L 1/0003
By adapting the transmission rate: by switching between different modulation schemes

Latency reduction by fast forward in multi-hop communication systems

Life of this patent

Latency reduction by fast forward in multi-hop communication systems

Life of this patent

Abstract

Claims18