Method and device for generating subframe, method for determining subframe and user equipment

Patent metadata

Field	Value
Publication number	US-9839030-B2
Application number	US-201514831684-A
Country	US
Kind code	B2
Filing date	Aug 20, 2015
Priority date	Feb 22, 2013
Publication date	Dec 5, 2017
Grant date	Dec 5, 2017

Abstract

This application provides a method and device for generating a subframe, a method for determining a subframe and a user equipment. The method for generating a subframe includes: determining, by a first device, patterns of at least two special subframes used in a broadcast control channel modification period, where guard period GP durations of the at least two special subframes are different; and generating, by the first device, the at least two special subframes. The method enhances flexibility and improves a system resource utilization rate.

First claim

What is claimed is:

1. A device for generating a subframe, the device comprising:
a transceiver configured to receive first indication information transmitted by a first device, wherein the first indication information is used to indicate a special subframe used by the first device; and
a processor configured to:
determine the special subframe used by the first device according to the first indication information;
determine a pattern of a first special subframe among at least two special subframes used in a broadcast control channel modification period, wherein a guard period (GP) duration of the first special subframe is larger than a GP duration of the special subframe used by the first device;
determine patterns of other special subframes except the first special subframe among the at least two special subframes, wherein a GP duration of at least one special subframe in the other special subframes is different from the GP duration of the first special subframe; and
generate the at least two special subframes.

2. The device according to claim 1 , wherein:
after determining the patterns of the at least two special subframes used in the broadcast control channel modification period, the processor is further configured to generate control information used to indicate the at least two special subframes; and
the transceiver is further configured to transmit the control information to a second device.

3. The device according to claim 2 , wherein the control information comprises at least one of: ratio patterns of the at least two special subframes, and a special subframe effective time.

4. The device according to claim 3 , wherein the special subframe effective time comprises:
a special subframe position; or
a special subframe offset and period.

5. The device according to claim 1 , wherein the transceiver is further configured to:
use a GP of the first special subframe to receive a signal, and use a downlink pilot time slot in the first special subframe to transmit the signal.

6. The device according to claim 5 , wherein after using the GP of the first special subframe to receive the signal, the processor is further configured to:
use the received signal to perform at least one of: synchronous tracking, and energy detection.

7. The device according to claim 5 , wherein the transceiver is further configured to:
use the GP of the first special subframe to receive a synchronization signal; and
transmit the synchronization signal to a lower-level device by using a second special subframe among the at least two special subframes, wherein the GP duration of the first special subframe is larger than a GP duration of the second special subframe.

8. The device according to claim 1 , wherein the processor is further configured to:
determine the patterns of the at least two special subframes used in the broadcast control channel modification period according to correspondence between a level of the device and the patterns of the at least two special subframes.

9. The device according to claim 1 , wherein:
the transceiver is configured to receive second indication information transmitted by the first device, wherein the second indication information is used to indicate a downlink subframe used by the first device; and
the processor is configured to determine the patterns of the at least two special subframes according to the second indication information.

10. The device according to claim 9 , wherein the processor is configured to:
determine the downlink subframe used by the first device according to the second indication information;
determine a pattern of the first special subframe, wherein a determined GP duration of a special subframe corresponds to a position of the downlink subframe used by the first device; and
determine patterns of other special subframes except the first special subframe among the at least two special subframes, wherein a GP duration of at least one special subframe in the other special subframes is different from the GP duration of the first special subframe.

11. A method for generating a subframe, the method comprising:
receiving, by a first device, first indication information transmitted by a second device, wherein the first indication information is used to indicate a special subframe used by the second device;
determining, by the first device, the special subframe used by the second device according to the first indication information;
determining, by the first device, a pattern of a first special subframe among at least two special subframes used in a broadcast control channel modification period, wherein a guard period (GP) duration of the first special subframes is larger than a GP duration of the special subframe used by the second device;
determining patterns of other special subframes except the first special subframe among the at least two special subframes, wherein a GP duration of at least one special subframe in the other special subframes is different from the GP duration of the first special subframe; and
generating, by the first device, the at least two special subframes.

12. The method according to claim 11 , wherein after determining, by the first device, patterns of the at least two special subframes used in the broadcast control channel modification period, the method further comprises:
generating, by the first device, control information used to indicate the at least two special subframes; and
transmitting, by the first device, the control information to a third device.

13. The method according to claim 12 , wherein the control information comprises at least one of: ratio patterns of the at least two special subframes, and a special subframe effective time.

14. The method according to claim 11 , wherein after generating, by the first device, the at least two special subframes, the method further comprises:
receiving, by the first device, a signal by using a GP of the first special subframe, and transmitting the signal by using a downlink pilot time slot in the first special subframe to transmit the signal.

15. The method according to claim 14 , wherein after receiving, by the first device, the signal by using the GP of the first special subframe, the method further comprises:
performing, by the first device, at least one of: synchronous tracking, energy detection, and signal parsing by using the received signal.

16. The method according to claim 14 , wherein receiving, by the first device, the signal by using the GP of the first special subframe comprises:
receiving, by the first device, a synchronization signal by using the GP of the first special subframe; and
transmitting, by the first device, the synchronization signal to a lower-level device by using at least one of a downlink subframe and a second special subframe among the at least two special subframes, wherein the GP duration of the first special subframe is larger than a GP duration of the second special subframe.

Assignees

• Huawei Tech Co Ltd

Inventors

• Zheng Juan
• Li Chaojun
• Ma Sha
• Li Qiang

Classifications

• H04L5/0048

  Allocation of pilot signals, i.e. of signals known to the receiver (allocation of control signalling H04L5/0053; use of control signalling H04L5/0091) · CPC title

• H04B7/2656

  for structure of frame, burst · CPC title

• H04W72/0446 Primary

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

• H04W74/006

  in the downlink, i.e. towards the terminal · CPC title

• H04L5/1469

  using time-sharing · CPC title