Tti configuration method, device, and system

Patent metadata

Field	Value
Publication number	US-2018343682-A1
Application number	US-201816052897-A
Country	US
Kind code	A1
Filing date	Aug 2, 2018
Priority date	Feb 2, 2016
Publication date	Nov 29, 2018
Grant date	—

Abstract

This disclosure relates to a TTI configuration method, a device, and a system, so as to resolve a problem that there is no method for configuring a short TTI. The TTI configuration method includes: receiving, by a network device, TTI request information, where the TTI request information indicates a TTI length requested to be used; and responding to the TTI request information, and sending TTI indication information, where the TTI indication information includes at least one of the following information: a TTI length assigned by the network device, effective moment information, start symbol location information, and enabling confirm information of the TTI length. Embodiments of the present disclosure are applied to LTE communication.

First claim

What is claimed is:

1 . A transmission time interval (TTI) configuration method, comprising:
receiving, by a network device, TTI request information, wherein the TTI request information indicates a TTI length requested to be used; and responding to the TTI request information, and sending TTI indication information comprising at least one of:
a TTI length assigned by the network device, effective moment information, start symbol location information, or enabling confirm information of the TTI length.

2 . The TTI configuration method according to claim 1 , wherein responding to the TTI request information comprises:
obtaining, according to information content of the TTI request information, the TTI length requested to be used, wherein the information content of the TTI request information corresponds to the TTI length requested to be used.

3 . The TTI configuration method according to claim 1 , wherein responding to the TTI request information comprises:
obtaining, according to a resource occupied by the TTI request information, the TTI length requested to be used, wherein the occupied resource corresponds to the TTI length requested to be used.

4 . The TTI configuration method according to claim 3 , wherein:
receiving, by a network device, TTI request information comprises:
receiving, by the network device, a random access preamble, wherein the random access preamble indicates the TTI length requested to be used;
responding to the TTI request information comprises:
obtaining, according to the random access preamble, the TTI length requested to be used; and
sending TTI indication information comprises:
sending a random access response message, wherein the TTI indication information is indicated in the random access response message.

5 . The TTI configuration method according to claim 4 , wherein:
the TTI indication information is indicated by adding a byte to the random access response message; or the TTI indication information is indicated by reusing one or more optional bits of an uplink scheduling grant message in the random access response message.

6 . The TTI configuration method according to claim 3 , wherein:
receiving, by a network device, TTI request information comprises:
receiving, by the network device, a random access preamble on a preset time-frequency resource, wherein the preset time-frequency resource corresponds to the TTI length requested to be used;
obtaining, according to a resource occupied by the TTI request information, the TTI length requested to be used comprises:
obtaining, according to the preset time-frequency resource occupied by the random access preamble, the TTI length requested to be used; and
sending TTI indication information comprises:
sending a random access response message, wherein the random access response message comprises the TTI indication information.

7 . A transmission time interval (TTI) configuration method, comprising:
sending, by user equipment, TTI request information for indicating a TTI length that the user equipment requests to use; and receiving TTI indication information comprising at least one of:
a TTI length assigned to the user equipment, effective moment information, start symbol location information, or enabling confirm information of the TTI length.

8 . The TTI configuration method according to claim 7 , wherein information content of the TTI request information indicates the TTI length that the user equipment requests to use, wherein the information content corresponds to the TTI length.

9 . The TTI configuration method according to claim 7 , wherein a resource occupied by the TTI request information indicates the TTI length that the user equipment requests to use, wherein the occupied resource corresponds to the TTI length.

10 . The TTI configuration method according to claim 8 , wherein:
sending, by user equipment, TTI request information comprises:
sending, by the user equipment, a random access preamble, wherein the random access preamble indicates the TTI length that the user equipment requests to use; and
receiving TTI indication information comprises:
receiving a random access response message, wherein the TTI indication information is indicated in the random access response message.

11 . The TTI configuration method according to claim 10 , wherein:
the TTI indication information is indicated by adding a byte to the random access response message; or the TTI indication information is indicated by reusing one or more optional bits of an uplink scheduling grant message in the random access response message.

12 . The TTI configuration method according to claim 9 , wherein:
sending, by user equipment, TTI request information comprises:
sending, by the user equipment, a random access preamble on a preset time-frequency resource, wherein the preset time-frequency resource corresponds to the TTI length that the user equipment requests to use; and
receiving TTI indication information comprises:
receiving a random access response message, wherein the random access response message comprises the TTI indication information.

13 . A device, comprising:
a processor; and a non-transitory memory for storing instructions which, when executed by the processor cause the device to:
send transmission time interval (TTI) request information, wherein the TTI request information indicates a TTI length that device requests to use; and
receive TTI indication information comprising at least one of:
a TTI length assigned to the device, effective moment information, start symbol location information, or enabling confirm information of the TTI length.

14 . The device according to claim 13 , wherein information content of the TTI request information indicates the TTI length that the user equipment requests to use, wherein the information content of the TTI request information corresponds to the TTI length.

15 . The device according to claim 13 , wherein a resource occupied by the TTI request information indicates the TTI length that the user equipment requests to use, wherein the occupied resource corresponds to the TTI length.

16 . The device according to claim 14 , wherein:
to send TTI request information, the instructions, when executed by the processor cause the device to:
send a random access preamble, wherein the random access preamble indicates the TTI length that the user equipment requests to use; and
to receive TTI indication information, the instructions, when executed by the processor cause the device to:
receive a random access response message, wherein the TTI indication information is indicated in the random access response message.

17 . The device according to claim 16 , wherein:
the TTI indication information is indicated by adding a byte to the random access response message; or the TTI indication information is indicated by reusing one or more optional bits of an uplink scheduling grant message in the random access response message.

18 . The device according to claim 15 , wherein:
to send TTI request information, the instructions which, when executed by the processor cause the device to:
send a random access preamble on a preset time-frequency resource, wherein the preset time-frequency resource corresponds to the TTI length that the user equipment requests to use; and
to receive TTI indication information the instructions which, when executed by the processor cause the device to:
receive a random access response message, wherein the random access response message comprises

Assignees

• Huawei Tech Co Ltd

Inventors

• Tang Xun
• Miao Jinhua
• Quan Wei
• Zhang Jian

Classifications

• H04L5/0078

  Timing of allocation · CPC title

• H04W72/0446

  Resources in time domain, e.g. slots or frames · CPC title

• H04W72/0466

  the resource being a scrambling code · CPC title

• H04B7/2656

  for structure of frame, burst · CPC title

• H04L1/0006

  by adapting the transmission format · CPC title