Invented by Jing Jiang, Joseph Binamira Soriaga, Tingfang JI, Kambiz Azarian Yazdi, Krishna Kiran Mukkavilli, John Edward Smee, Qualcomm Inc
In today’s fast-paced digital world, reliable and low-latency communication is crucial for various industries and applications. Whether it’s for autonomous vehicles, real-time gaming, or financial trading, the need for uninterrupted and instant data transmission is paramount. This is where Fountain Harq technology comes into play, revolutionizing the market for reliable low-latency communication.
Fountain Harq, also known as Raptor codes, is an advanced error correction technique that ensures the reliable delivery of data packets over unreliable communication channels. Unlike traditional error correction methods, Fountain Harq does not require retransmission of lost packets, making it highly efficient and low-latency.
One of the key advantages of Fountain Harq is its ability to provide reliable communication even in the presence of high packet loss rates. This is particularly important in scenarios where the communication channel is prone to interference or congestion. By using Fountain Harq, data packets can be encoded and transmitted in a way that allows the receiver to reconstruct the original message even if some packets are lost during transmission.
Another significant benefit of Fountain Harq is its low-latency nature. Traditional error correction techniques often introduce delays due to the need for retransmission, which can be detrimental in applications that require real-time or near real-time communication. Fountain Harq eliminates the need for retransmission, resulting in faster and more efficient data transmission with minimal latency.
The market for Fountain Harq is vast and diverse, encompassing various industries and applications. In the automotive industry, for example, autonomous vehicles rely on low-latency communication to exchange critical information with other vehicles and infrastructure. Fountain Harq ensures that these communications are reliable and instantaneous, enabling safer and more efficient transportation systems.
Real-time gaming is another sector that greatly benefits from Fountain Harq. Gamers demand low-latency communication to ensure smooth gameplay and minimize lag. By using Fountain Harq, game developers can provide a seamless gaming experience, reducing frustrations caused by delays or interruptions in data transmission.
Financial trading is yet another field where Fountain Harq plays a crucial role. In this high-stakes industry, every millisecond counts. Fountain Harq enables traders to receive market data and execute trades with minimal latency, giving them a competitive edge in fast-paced markets.
As the demand for reliable low-latency communication continues to grow, the market for Fountain Harq is expected to expand significantly. Companies specializing in communication technologies are investing in research and development to enhance the efficiency and performance of Fountain Harq algorithms. This, in turn, will drive the adoption of Fountain Harq in various sectors, further fueling its market growth.
In conclusion, the market for Fountain Harq for reliable low-latency communication is witnessing rapid growth and adoption across industries. Its ability to provide reliable communication in the presence of high packet loss rates, coupled with its low-latency nature, makes it a game-changer in today’s digital landscape. As technology continues to advance, Fountain Harq will undoubtedly play a pivotal role in enabling seamless and efficient communication in various applications, ultimately transforming the way we interact and exchange data.
The Qualcomm Inc invention works as follows
Methods and systems are described for fountain-based hybrid automatic repeat requests (HARD) to ensure reliable communication with low latency. Wireless devices may transmit data blocks based on low-latency operation modes. The device can then transmit multiple redundancy versions before determining if an acknowledgement has been received. In some cases, the ACK can be an augmented ACK. This ACK is based on how many redundancy versions were received before successfully decoding the block and may also include an extra resource request. The device may, in some cases, select an updated modulation scheme based on the augmented ACK. The device may, in some cases, increase the number of frequencies (e.g. component carriers) that are used for transmission based upon the augmented ACK.
Background for Fountain Harq for reliable low-latency communication
Field of Disclosure
The following is a general description of wireless communication and, more specifically, fountain hybrid automatic repetition request (HARQ) to ensure reliable low-latency communication.
Description of Related Art.
Wireless communications systems provide a wide range of communication content, including voice, video and packet data. They also support messaging, broadcasting, and other types of communication. These systems can be multiple-access systems that support communication with multiple users through sharing system resources (e.g. time, frequency and power). These systems can include time division multiple-access (TDMA), frequency division multi-access (FDMA), and code division multiple-access (CDMA).
By way if example, a wireless multi-access communication system may include multiple base stations that support communication simultaneously for multiple communication devices. These communication devices may also be known as user equipments (UEs). A base station can communicate with communication devices using downlink channels, e.g. for transmissions between a base and UE, or uplink channels, e.g. for transmissions of UEs to a station. In some cases, UEs can also directly communicate with each other.
In some cases, wireless devices may send HARQ Feedback such as an acknowledgment (ACK) of a negative acknowledgement (NACK), to indicate if a transmission has been correctly received. The transmitter may retransmit a message if it receives a negative acknowledgment (NACK) to ensure that the data is delivered successfully. The HARQ may be a lengthy process due to the time it takes to decode the message and the time required for the NACK. This can cause a delay in the communication between devices. It may also affect the reliability and data rate of the wireless connection.
The present disclosure can relate to wireless communication systems in general, and to systems, methods or apparatuses that are associated with fountain hybrid automatic repetition request (HARQ) to ensure reliable low-latency communication. Wireless devices may transmit data blocks based on low latency operation modes. The device can then transmit multiple redundancy versions before determining if an acknowledgement has been received. In some cases, the ACK can be an augmented ACK. This ACK is based on how many redundancy versions were received before successfully decoding the block and may also include a resource request. The device may, in some cases, select an updated modulation scheme and coding scheme based on the augmented ACK. The device may, in some cases, increase the number of frequencies (e.g. component carriers) that are used for transmission based upon the augmented ACK.
A method of wireless communications is described. The method can include transmitting a block of data using a first resource set based on a mode of low latency operation, and transmitting a plurality of redundancy copies of the block using a secondary set of resources based upon the low latency mode.
The invention is a wireless communication apparatus. The apparatus can include means for transmitting a block of data using a first resource set based on a mode of operation with low latency, and means for sending a number redundancy copies of the block using a secondary set of resources based upon the low-latency mode of operation, the number redundancy copies of the block being sent before determining if an ACK for the block is received.
A further wireless communication apparatus is described. The apparatus can include a processor and memory in electronic communications with the processor. Instructions stored in the memory are executable by processor and enable the processor to transmit a block of data using a first resource set based on a mode of low latency operation, and to transmit a number redundancy copies of the block using a second resource set based upon the low latency mode.
The invention is a non-transitory, computer-readable medium that stores code for wireless communications. The code can include instructions executable for transmitting a datablock using a first resource set based on a high latency operation mode and transmitting a number redundancy version of the same data block with a second resource set based on a high latency operation mode.
Some examples of the methods, apparatuses or non-transitory computers-readable media described above can further include selecting an MCS initial based at the least in part on channel conditions or the size of the block, and transmitting the block based on the MCS initial. In some cases, the ACK may be an augmented ACK based, at least partially, on the number and type of redundancy versions, with an additional resource request.
Some examples of the methods, apparatuses or non-transitory computers-readable media described above can further include receiving an ACK via a reduced symbol-duration uplink (UL), based on a low-latency operational mode. Alternatively, or in addition to this, some examples could include receiving a certain number of NACKs corresponding with the number of redundancy version on the reduced symbol length UL control channel.
Some examples of the methods, apparatuses or non-transitory computers-readable medium described may also include refraining to transmit an additional redundancy copy of the data block based upon the ACK. In some cases, the low-latency mode may also include a shorter transmission time interval.
In some examples, the second group of resources are contiguous with the first in terms of time. Some examples can also or alternatively include transmitting information via a reduced symbol-duration downlink (DL), based on low latency operation mode.
A method of wireless communications is described. The method can include receiving a block of data using a set first of resources in a low-latency mode, computing first LLRs, determining a set first of decoded bit from the first LLRs do not pass the CRC. Receiving a number redundancy version of the block in the low-latency mode using a set second of resources before transmitting a “NACK”, computing an updated LLRs set for the block of data based upon the number redundancy.
The apparatus is described as a wireless communication device. The apparatus can include means to receive a datablock using a set first of resources based upon a low-latency operational mode. Means are also described for computing a set first of LLRs, determining a set first of decoded bit from the set first of LLRs do not pass a CRC. Means may be further described for receiving a set number of redundancy version of the block based upon the low-latency operational mode before transmitting a “NACK”, means
A further wireless communication apparatus is described. The apparatus can include a processor and memory in electronic communications with the processor. The instructions in the memory are executable by a processor to: receive a block of data using a set first of resources in a low-latency operational mode; determine that one set decoded from the first LLRs fails a CRC; receive a redundancy version of the block based in the low-latency operational mode before transmitting a “NACK”; receive a set number of redundancy copies of the
The invention is a non-transitory, computer-readable medium that stores code for wireless communications. The code can include instructions that are executable in order to receive a block of data using a set first of resources, compute a set first of LLRs, determine a set first of decoded bit from the set first of LLRs do not pass a CR, receive redundancy version of the block based upon the low latency operation mode using a set second of resources before transmitting a nack, receive the redundancy version of the block based upon the low latency mode using a number using a based using a based using a number using a number using a number using a number using a number using the second set using a number using the low latency using a number using the low latency using the low latency using the low latency using a number using the low latency using the a a a a a a number using a number using a a a a number, a NACK and a number,
In some examples, the methods, apparatuses or non-transitory computers-readable media described above include receiving the block of data using an initial MCS that is based, at least in part, on the channel condition or the size of the block. In some cases, the ACK can be an augmented ACK based in part at least on the number redundancy versions. It may also include an additional resource request.
Some examples of the methods, apparatuses or non-transitory computers-readable media described above can further include receiving a next data block by using an updated MCS based, at least in part, on the augmented ACK. In some cases, the request for additional resources is also or alternatively based on reliability metrics.
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