Signal transmission method, base station, and network node

Abstract

A method for signal transmission includes: acquiring, by a base station, a wake-up capability of a terminal device; determining, by the base station, a first time position for sending power saving signal according to the wake-up capability; and sending, by the base station, the power saving signal to the terminal device at the first time position, the power saving signal being used for indicating the terminal device to wake up at a second time position, wherein the second time position is a paging occasion (PO) for transmitting a paging message, wherein the wake-up capability comprises a first wake-up capability or a second wake-up capability, and a wake-up time corresponding to the first wake-up capability is longer than a wake-up time corresponding to the second wake-up capability.

What is claimed is: 
     
         1 . A method for signal transmission, comprising:
 acquiring, by a base station, a wake-up capability of a terminal device;   determining, by the base station, a first time position for sending power saving signal according to the wake-up capability; and   sending, by the base station, the power saving signal to the terminal device at the first time position, the power saving signal being used for indicating the terminal device to wake up at a second time position, wherein the second time position is a paging occasion (PO) for transmitting a paging message,   wherein the wake-up capability comprises a first wake-up capability or a second wake-up capability, and a wake-up time corresponding to the first wake-up capability is longer than a wake-up time corresponding to the second wake-up capability,   wherein the acquiring, by the base station, the wake-up capability of the terminal device comprises:
 receiving, by the base station, indication information sent by a first network node, wherein the indication information is used for indicating the wake-up capability of the terminal device, and the first network node comprises a mobility management entity (MME). 
   
     
     
         2 . The method according to  claim 1 , wherein the determining, by the base station, a first time position for sending power saving signal according to the wake-up capability comprises:
 determining, by the base station, a timing duration between the first time position and the second time position according to the wake-up capability; and   determining, by the base station, the first time position according to the timing duration and the second time position.   
     
     
         3 . The method according to  claim 2 , wherein the timing duration when the terminal device has the first wake-up capability is longer than the timing duration when the terminal device has the second wake-up capability. 
     
     
         4 . The method according to  claim 2 , wherein the timing duration is a time duration between a start time-point or an end time-point of the first time position and a start time-point of the second time position. 
     
     
         5 . The method according to  claim 1 , wherein the second time position is a sub-frame or time slot, which is the first of the sub-frames or time slots for the terminal device to monitor downlink control channel in a discontinuous reception (DRX) cycle. 
     
     
         6 . The method according to  claim 1 , wherein the method further comprises:
 sending, by the base station, the paging message to the terminal device on the PO.   
     
     
         7 . The method according to  claim 1 , wherein the wake-up time corresponding to the first wake-up capability is a time period that the terminal device with the first wake-up capability needs for waking up, the wake-up time corresponding to the second wake-up capability is a time period that the terminal device with the second wake-up capability needs for waking up. 
     
     
         8 . The method according to  claim 1 , wherein the acquiring, by the base station, the wake-up capability of the terminal device comprises:
 receiving, by the base station, a transparent container sent by the first network node, the wake-up capability of the terminal device being included in the transparent container; and   acquiring, by the base station, the wake-up capability from the transparent container.   
     
     
         9 . A base station, comprising:
 a processor, configured to acquire a wake-up capability of a terminal device, and determine a first time position for sending power saving signal according to the wake-up capability; and   a transceiver, configured to send the power saving signal to the terminal device at the first time position determined by the processor, the power saving signal being used for indicating the terminal device to wake up at a second time position, wherein the second time position is a paging occasion (PO) for transmitting a paging message,   wherein the wake-up capability comprises a first wake-up capability or a second wake-up capability, and a wake-up time corresponding to the first wake-up capability is longer than a wake-up time corresponding to the second wake-up capability,   wherein the transceiver is further configured to:
 receive indication information sent by a first network node, wherein the indication information is used for indicating the wake-up capability of the terminal device, and the first network node comprises a mobility management entity (MME). 
   
     
     
         10 . The base station according to  claim 9 , wherein the processor is specifically configured to:
 determine a timing duration between the first time position and the second time position according to the wake-up capability; and   determine the first time position according to the timing duration and the second time position.   
     
     
         11 . The base station according to  claim 9 , wherein the second time position is a sub-frame or time slot, which is the first of the sub-frames or time slots for the terminal device to monitor downlink control channel in a discontinuous reception (DRX) cycle. 
     
     
         12 . The base station according to  claim 9 , wherein the transceiver is further configured to:
 send the paging message to the terminal device on the PO.   
     
     
         13 . The base station according to  claim 9 , wherein the wake-up time corresponding to the first wake-up capability is a time period that the terminal device with the first wake-up capability needs for waking up, the wake-up time corresponding to the second wake-up capability is a time period that the terminal device with the second wake-up capability needs for waking up. 
     
     
         14 . The base station according to  claim 9 , wherein the processor is further configured to receive, through the transceiver, a transparent container sent by the first network node, the wake-up capability of the terminal device being included in the transparent container, and acquire the wake-up capability from the transparent container. 
     
     
         15 . A method for signal transmission, comprising:
 reporting, by a terminal device, a wake-up capability of the terminal device to a first network node, wherein the wake-up capability is indicated by indication information sent from the first network node to a base station and used by the base station for determining a first time position for sending power saving signal, and the first network node comprises a mobility management entity (MME); and   receiving, by the terminal device, the power saving signal from the base station at the first time position, the power saving signal being used for indicating the terminal device to wake up at a second time position, wherein the second time position is a paging occasion (PO) for transmitting a paging message,   wherein the wake-up capability comprises a first wake-up capability or a second wake-up capability, and a wake-up time corresponding to the first wake-up capability is longer than a wake-up time corresponding to the second wake-up capability.   
     
     
         16 . The method according to  claim 15 , wherein the wake-up capability is used by a base station for determining a timing duration between the first time position and the second time position, causing the base station to determine the first time position according to the timing duration and the second time position, and
 wherein the timing duration is a time duration between a start time-point or an end time-point of the first time position and a start time-point of the second time position,   wherein the timing duration when the terminal device has the first wake-up capability is longer than the timing duration when the terminal device has the second wake-up capability.   
     
     
         17 . The method according to  claim 15 , wherein the second time position is a sub-frame or time slot, which is the first of the sub-frames or time slots for the terminal device to monitor downlink control channel in a discontinuous reception (DRX) cycle. 
     
     
         18 . The method according to  claim 15 , further comprising:
 receiving, by the terminal device, the paging message from the base station on the PO.   
     
     
         19 . The method according to  claim 15 , wherein the wake-up time corresponding to the first wake-up capability is a time period that the terminal device with the first wake-up capability needs for waking up, the wake-up time corresponding to the second wake-up capability is a time period that the terminal device with the second wake-up capability needs for waking up. 
     
     
         20 . A terminal device, comprising a processor and a transceiver,
 wherein processor is configured to:   report, through the transceiver, a wake-up capability of the terminal device to a first network node, wherein the wake-up capability is indicated by indication information sent from the first network node to a base station and used by the base station for determining a first time position for sending power saving signal, and the first network node comprises a mobility management entity (MME); and   receive, through the transceiver, the power saving signal from the base station at the first time position, the power saving signal being used for indicating the terminal device to wake up at a second time position, wherein the second time position is a paging occasion (PO) for transmitting a paging message,   wherein the wake-up capability comprises a first wake-up capability or a second wake-up capability, and a wake-up time corresponding to the first wake-up capability is longer than a wake-up time corresponding to the second wake-up capability.