System and method for preamble sequence transmission and reception to control network traffic
View Patent ↗The method includes generating a preamble sequence at a transmitter, where the transmitter is capable of generating a first type of preamble sequence and a second type of preamble sequence. The transmitter transmits a request message to a receiver to request network resources, where the request message including the preamble sequence. The transmitter receives a feedback message from the receiver. The transmitter controls the network data traffic based on the feedback message. The method further includes receiving, a receiver, a signal from the transmitter, the signal including the preamble sequence. The receiver detects the preamble sequence within the signal, where the receiver is capable of detecting a first type of preamble sequence and a second type of preamble sequence. The receiver identifies a request message within the signal based on the detected preamble sequence, and controls the network data traffic based on the identified request message.
1. A method of preamble transmission to control network data traffic in a communication network, comprising:
receiving, by at least one processor of a user equipment from a receiver, indicator information indicating that the at least one processor should use one of a first type of preamble sequence or a second type of preamble sequence in order to generate a first preamble sequence;
generating, by the at least one processor, the first preamble sequence using the indicator information;
first transmitting, by the least one processor, a first request message to the receiver to initially request network resources, the first request message including the first preamble sequence, the at least one processor being capable of generating both the first type of preamble sequence and the second type of preamble sequence for the first request message for the first request message to initially request network resources; and
receiving, by the at least one processor, a feedback message from the receiver; and
controlling, by the at least one processor, the network data traffic of the communication network based on the feedback message, and
wherein the second type of preamble sequence has a higher robustness against frequency impairments compared to the first type of preamble sequence, and the second type of preamble sequence is used in high-speed scenarios.
2. The method of claim 1 , wherein the first request message includes a first set of data payload packets associated with the first request message, the controlling of the network data traffic further including,
second transmitting a second set of data payload packets, using assigned network resources, following the reception of the feedback message, the feedback message identifying the assigned network resources.
3. The method of claim 1 , wherein the first type of preamble sequence is a cyclic-shifted Zadoff-Chu (ZC) root sequence, and the second type of preamble sequence is a circular delay-Doppler shifted M-root sequence.
4. The method of claim 1 , further comprising:
exchanging payload packets with the receiver using a selected preamble sequence type that was used for the first preamble sequence in the request message, the selected preamble sequence being the first type of preamble sequence or the second type of preamble sequence.
5. The method of claim 1 , wherein the receiver is a base station.
6. The method of claim 1 , further comprising:
receiving, from the receiver, in case of a preamble sequence for use in physical random access channel PRACH, PRACH-Config information, wherein the indicator information is defined in an information element of PRACH-Config.
7. The method of claim 6 , further comprising:
receiving, from the receiver, said PRACH-Config information in System Information Block PRACH-ConfigSIB.
8. At least a first network node in a communication network, comprising:
at least one processor, configured to,
receive, from a receiver, indicator information indicating that the at least one processor should use one of a first type of preamble sequence or a second type of preamble sequence in order to generate a first preamble sequence,
generate the first preamble sequence,
transmit a first request message to the receiver to request network resources, the first request message including the first preamble sequence, the at least one processor being capable of generating both the first type of preamble sequence and the second type of preamble sequence for the first request message for the first request message to initially request network resources, and
receive a feedback message from the receiver, and
control the network data traffic of the communication network based on the feedback message, and
wherein the second type of preamble sequence has a higher robustness against frequency impairments compared to the first type of preamble sequence, and the second type of preamble sequence is used in high-speed scenarios.
9. The at least a first network node of claim 8 , wherein the first request message includes a first set of data payload packets associated with the first request message, the at least one processor controlling the network data traffic by being further configured to,
transmit a second set of data payload packets, using assigned network resources, following the reception of the feedback message, the feedback message identifying the assigned network resources.
10. The at least a first network node of claim 8 , wherein the first type of preamble sequence is a cyclic-shifted Zadoff-Chu (ZC) root sequence, and the second type of preamble sequence is a circular delay-Doppler shifted M-root sequence.
11. The at least a first network node of claim 8 , wherein the at least one processor is further configured to,
exchange payload packets with the receiver using a selected preamble sequence type that was used for the first preamble sequence in the request message, the selected preamble sequence being the first type of preamble sequence or the second type of preamble sequence.
12. The at least a first network node of claim 8 , wherein the receiver is a base station.
13. The at least a first network node of claim 8 , wherein the at least one processor is further configured to:
receive, from the receiver, in case of a preamble sequence for use in physical random access channel PRACH, PRACH-Config information, wherein the indicator information is defined in an information element of PRACH-Config.
14. The at least a first network node of claim 13 , wherein the at least one processor is further configured to:
receive, from the receiver, said PRACH-Config information in System Information Block PRACH-ConfigSIB.
15. A user equipment for a communication network, comprising:
at least one processor, configured to,
receive, from a receiver, indicator information indicating that the at least one processor should use one of a first type of preamble sequence or a second type of preamble sequence in order to generate a first preamble sequence,
generate the first preamble sequence,
transmit a first request message to the receiver to request network resources, the first request message including the first preamble sequence, the at least one processor being capable of generating both the first type of preamble sequence and the second type of preamble sequence for the first request message for the first request message to initially request network resources, and
receive a feedback message from the receiver, and
control the network data traffic of the communication network based on the feedback message, and
wherein the second type of preamble sequence has a higher robustness against frequency impairments compared to the first type of preamble sequence, and the second type of preamble sequence is used in high-speed scenarios.
16. The user equipment of claim 15 , wherein the first request message includes a first set of data payload packets associated with the first request message, the at least one processor controlling the network data traffic by being further configured to,
transmit a second set of data payload packets, using assigned network resources, following the reception of the feedback message, the feedback message identifying the assigned network resources.
17. The user equipment of claim 15 , wherein the first type of preamble sequence is a cyclic-shifted Zadoff-Chu (ZC) root sequence, and the second type of preamble sequence is a circular delay-Doppler shifted M-root sequence.
18. The user equipment of claim 15 , wherein the at least one processor is further configured to,
exchange payload packets with the receiver using a selected preamble sequence type that was used for the first preamble sequence in the request message, the selected preamble sequence being the first type of preamble sequence or the second type of preamble sequence.
19. The user equipment of claim 15 , wherein the receiver is a base station.
20. The user equipment of claim 15 , wherein the at least one processor is further configured to:
receive, from the receiver, in case of a preamble sequence for use in physical random access channel PRACH, PRACH-Config information, wherein the indicator information is defined in an information element of PRACH-Config.
21. The user equipment of claim 20 , wherein the at least one processor is further configured to:
receive, from the receiver, said PRACH-Config information in System Information Block PRACH-ConfigSIB.