Channel monitoring method and device

Patent metadata

Field	Value
Publication number	US-2016337975-A1
Application number	US-201615221126-A
Country	US
Kind code	A1
Filing date	Jul 27, 2016
Priority date	Jan 28, 2014
Publication date	Nov 17, 2016
Grant date	—

Abstract

The present invention provides a channel monitoring method and device. The method includes: receiving, by user equipment (UE), a first notification message sent by a base station, where the first notification message includes usage information of a frequency resource of a second carrier; determining, by the UE according to the first notification message, whether the frequency resource of the second carrier is in an available state; and if the UE determines that the frequency resource of the second carrier is in the available state, monitoring a PDCCH corresponding to the second carrier; otherwise, stopping monitoring a PDCCH corresponding to the second carrier, where the second carrier is a carrier on which the UE operates on a discontinuously occupied frequency resource. According to the foregoing method, the UE can properly use an unlicensed frequency to communicate with the base station, and meanwhile reduce power consumption of the UE.

First claim

What is claimed is:

1 . A channel monitoring method, comprising:
receiving, by user equipment (UE), a first notification message sent by a base station, wherein the first notification message comprises usage information of a frequency resource of a second carrier; determining, by the UE according to the first notification message, whether the frequency resource of the second carrier is in an available state; and if the UE determines that the frequency resource of the second carrier is in the available state, monitoring a physical downlink control channel (PDCCH) corresponding to the second carrier; or if the UE determines that the frequency resource of the second carrier is in an unavailable state, stopping monitoring a PDCCH corresponding to the second carrier, wherein the second carrier is a carrier on which the UE operates on a discontinuously occupied frequency resource.

2 . The method according to claim 1 , wherein the receiving, by UE, a first notification message sent by a base station comprises:
receiving, by the UE, the first notification message that is sent by the base station by using the second carrier; or receiving, by the UE, the first notification message that is sent by the base station by using a first carrier, wherein the first carrier is a carrier on which the UE operates on a continuously occupied frequency resource.

3 . The method according to claim 1 , wherein the usage information of the frequency resource of the second carrier comprises one or more of the following information:
information about availability of the frequency resource of the second carrier; information about unavailability of the frequency resource of the second carrier; information about duration in which the frequency resource of the second carrier is unavailable; information about duration in which the frequency resource of the second carrier is available; or information about release of the frequency resource of the second carrier.

4 . The method according to claim 3 , wherein the usage information of the frequency resource of the second carrier comprises the information about the duration in which the frequency resource of the second carrier is unavailable; and
the determining, according to the first notification message, whether the frequency resource of the second carrier is in an available state comprises: determining, according to the first notification message, that the frequency resource of the second carrier is in the unavailable state, determining the duration of the unavailable state of the frequency resource of the second carrier, and after the duration of the unavailable state ends, determining that the frequency resource of the second carrier is in the available state.

5 . The method according to claim 3 , wherein the usage information of the frequency resource of the second carrier comprises the information about the duration in which the frequency resource of the second carrier is available; and
the determining, according to the first notification message, whether the frequency resource of the second carrier is in an available state comprises: determining, according to the first notification message, that the frequency resource of the second carrier is in the available state, determining the duration of the available state of the frequency resource of the second carrier, and after the duration of the available state ends, determining that the frequency resource of the second carrier is in the unavailable state.

6 . A channel monitoring method, comprising:
receiving, by user equipment (UE), a configuration message sent by a base station, wherein the configuration message comprises configuration information of discontinuous reception (DRX); and entering a state of a first DRX cycle when a physical downlink control channel (PDCCH) corresponding to a first carrier is not received within a preset first period of time after the UE performs configuration according to the configuration information, and stopping monitoring a PDCCH corresponding to a second carrier after the UE enters the state of the first DRX cycle, wherein the second carrier is a carrier on which the UE operates on a discontinuously occupied frequency resource, and the first carrier is a carrier on which the UE operates on a continuously occupied frequency resource.

7 . A channel monitoring method, comprising:
configuring, by user equipment UE, at least one logical channel used to carry data; and if the data carried by the at least one logical channel is not transmitted by using a second carrier within a preset first period of time, stopping, by the UE, monitoring a physical downlink control channel (PDCCH) corresponding to the second carrier, wherein a priority of choosing the second carrier to transmit the data carried by the at least one logical channel is higher than a priority of choosing a first carrier to transmit the data carried by the at least one logical channel, and the second carrier is a carrier on which the UE operates on a discontinuously occupied frequency resource.

8 . User equipment (UE), comprising:
a non-transitory memory and a processor, wherein the non-transitory memory is configured to store an instruction and the processor is configured to execute the instruction stored in the non-transitory memory so as to: receive a first notification message sent by a base station, wherein the first notification message comprises usage information of a frequency resource of a second carrier; determine, according to the first notification message, whether the frequency resource of the second carrier is in an available state; and if it is determined that the frequency resource of the second carrier is in the available state, monitor a physical downlink control channel (PDCCH) corresponding to the second carrier; or if it is determined that the frequency resource of the second carrier is in an unavailable state, stop monitoring a PDCCH corresponding to the second carrier, wherein the second carrier is a carrier on which the user equipment (UE) operates on a discontinuously occupied frequency resource.

9 . The user equipment according to claim 8 , wherein the processor is specifically configured to:
receive the first notification message that is sent by the base station by using the second carrier; or receive the first notification message that is sent by the base station by using a first carrier, wherein the first carrier is a carrier on which the UE operates on a continuously occupied frequency resource.

10 . The user equipment according to claim 8 , wherein the usage information of the frequency resource of the second carrier comprises one or more of the following information:
information about availability of the frequency resource of the second carrier; information about unavailability of the frequency resource of the second carrier; information about duration in which the frequency resource of the second carrier is unavailable; information about duration in which the frequency resource of the second carrier is available; and information about release of the frequency resource of the second carrier.

11 . The user equipment according to claim 10 , wherein when the usage information of the frequency resource of the second carrier comprises the information about the duration in which the frequency resource of the second carrier is unavailable, the processor is further configured to:
determine, according to the first notification message, that the frequency resource of the second carrier is in the unavailable state, determine the duration of the unavailable state of the frequency resource of the second carrier, and after the duration of the unavailable

Assignees

• Huawei Tech Co Ltd

Inventors

• Li Bingzhao
• Quan Wei
• Yang Xiaodong
• Zhang Jian

Classifications

• H04W72/23

  in the downlink direction of a wireless link, i.e. towards a terminal · CPC title

• H04W52/0238 Primary

  where the received signal is an unwanted signal, e.g. interference or idle signal · CPC title

• H04W16/14

  Spectrum sharing arrangements {between different networks} · CPC title

• H04W72/0453

  Resources in frequency domain, e.g. a carrier in FDMA · CPC title

• H04W52/0216

  using a pre-established activity schedule, e.g. traffic indication frame · CPC title