Method and device for acquiring terminal capability, and computer storage medium

Abstract

A method for acquiring terminal capability includes that: a first access network device sends a first handover request message to a second access network device, the first handover request message carrying first UE capability identification information of a terminal. A device for acquiring terminal capability is also provided.

1 . A method for acquiring terminal capability, comprising:
 acquiring, by a first access network device, capability information about whether a second access network device supports an optimized terminal capability; and   if the second access network device does not support the optimized terminal capability, sending, by the first access network device, a first handover request message to the second access network device, wherein the first handover request message carries first UE capability identification information of a terminal, and in response to the second access network device being unable to identify the first UE capability identification information of the terminal, sending, by the second access network device, a UE capability request message to a core network device or the terminal, and receiving, by the second access network device, first UE capability information of the terminal from the core network device or the terminal; or   if the second access network device does not support the optimized terminal capability identification, sending, by the first access network device, a first handover request message to the second access network device, wherein the first handover request message carries first UE capability information of a terminal.   
     
     
         2 . The method of  claim 1 , further comprising:
 in response to the second access network device being unable to identify the first UE capability identification information of the terminal, receiving, by the first access network device, a first feedback message from the second access network device, wherein the first feedback message indicates a handover rejection or a handover failure, the first feedback message carries cause parameters, and the cause parameters indicate that the second access network device does not support an optimized terminal capability; and   sending, by the first access network device, a second handover request message to the second access network device, wherein the second handover request message carries the first UE capability identification information of the terminal.   
     
     
         3 . The method of  claim 1 , wherein when sending the UE capability request message to the core network device or the terminal, the second access network device carries the first UE capability identification information of the terminal in the UE capability request message, so that the core network device or the terminal determines the first UE capability information of the terminal based on the first UE capability identification information and a correspondence between UE capability identification information and UE capability information. 
     
     
         4 . The method of  claim 1 , wherein
 in response to the second access network device being able to identify the first UE capability identification information of the terminal, determining, by the second access network device, first UE capability information of the terminal based on the first UE capability identification information and a correspondence between UE capability identification information and UE capability information.   
     
     
         5 . The method of  claim 1 , further comprising:
 receiving, by the first access network device, a measurement report from the terminal, and   determining, based on the measurement report, the second access network device to which the terminal is to be handed over.   
     
     
         6 . A method for acquiring terminal capability, comprising:
 sending, by a second access network device, capability information about whether the second access network device supports an optimized terminal capability;   in response to the second access network device sending the optimized terminal capability, receiving, by the second access network device, a first handover request message from a first access network device, wherein the first handover request message carries first UE capability identification information of a terminal;   in response to the second access network device being unable to identify the first UE capability identification information of the terminal, sending, by the second access network device, a UE capability request message to a core network device or the terminal; and   receiving, by the second access network device, first UE capability information of the terminal from the core network device or the terminal.   
     
     
         7 . The method of  claim 6 , further comprising:
 in response to the second access network device being unable to identify the first UE capability identification information of the terminal,   sending, by the second access network device, a first feedback message to the first access network device, wherein the first feedback message indicates a handover rejection or a handover failure, the first feedback message carries cause parameters, and the cause parameters indicate that the second access network device does not support an optimized terminal capability;   receiving, by the second access network device, a second handover request message from the first access network device, wherein the second handover request message carries first UE capability information of the terminal, and   acquiring the first UE capability information of the terminal from the second handover request message.   
     
     
         8 . The method of  claim 6 , wherein when sending the UE capability request message to the core network device or the terminal, the second access network device carries the first UE capability identification information of the terminal in the UE capability request message, so that the core network device or the terminal determines the first UE capability information of the terminal based on the first UE capability identification information and a correspondence between UE capability identification information and UE capability information. 
     
     
         9 . The method of  claim 6 , further comprising:
 in response to the second access network device being able to identify the first UE capability identification information of the terminal, determining, by the second access network device, first UE capability information of the terminal based on the first UE capability identification information and a correspondence between UE capability identification information and UE capability information.   
     
     
         10 . A device for acquiring terminal capability, comprising:
 a processor; and   a memory storing computer readable instructions executable by the processor,   wherein the processor is configured to:   acquire, through a transceiver, capability information about whether a second access network device supports an optimized terminal capability;   if the second access network device does not support the optimized terminal capability, send, through the transceiver, a first handover request message to the second access network device, wherein the first handover request message carries first UE capability identification information of a terminal, wherein the second access network device is configured to, in response to the second access network device being unable to identify the first UE capability identification information of the terminal, send a UE capability request message to a core network device or the terminal, and receive first UE capability information of the terminal from the core network device or the terminal; or   if the second access network device does not support the optimized terminal capability identification, send, through the transceiver, a first handover request message to the second access network device, wherein the first handover request message carries first UE capability information of a terminal.   
     
     
         11 . The device of  claim 10 , wherein the transceiver is further configured to:
 receive, in response to the second access network device being unable to identify the first UE capability identification information of the terminal, a first feedback message from the second access network device, wherein the first feedback message indicates a handover rejection or a handover failure, the first feedback message carries cause parameters, and the cause parameters indicate that the second access network device does not support an optimized terminal capability; and   send a second handover request message to the second access network device, wherein the second handover request message carries the first UE capability identification information of the terminal.   
     
     
         12 . The device of  claim 10 , wherein when sending the UE capability request message to the core network device or the terminal, the second access network device carries the first UE capability identification information of the terminal in the UE capability request message, so that the core network device or the terminal determines the first UE capability information of the terminal based on the first UE capability identification information and a correspondence between UE capability identification information and UE capability information. 
     
     
         13 . The device of  claim 10 , wherein
 in response to the second access network device being able to identify the first UE capability identification information of the terminal, the second access network device determines first UE capability information of the terminal based on the first UE capability identification information and a correspondence between UE capability identification information and UE capability information.