Communication method, and communications apparatus and system

A communication method, comprising:

• receiving, by a control plane entity (CPE), a request message, wherein the request message comprises identification information of user equipment (UE);
• determining, by the CPE, whether a suspend function of the UE corresponding to the identification information is allowed to be enabled;
• and
• when the CPE determines that the suspend function of the UE is allowed to be enabled, sending, by the CPE, a message to the UE, wherein the message comprises indication information indicating that the suspend function is allowed to be enabled.

A control plane entity (CPE), comprising:

• a processor, configured to determine whether a suspend function of user equipment (UE) is allowed to be enabled;
• and
• a communications unit, configured to:
• when the processor determines that the suspend function of the UE is allowed to be enabled, send a message to the UE or a radio access network node (RAN node) connected to the UE, wherein the message comprises indication information indicating that the suspend function is allowed to be enabled.

A radio access network node (RAN node), comprising:

• a communications unit, configured to receive a message sent by a control plane entity (CPE), wherein the message comprises indication information;
• and
• a processor, configured to:
• when the indication information indicates that the suspend function is allowed to be enabled, enable the suspend function of user equipment (UE) based on the indication information.

User equipment (UE), wherein the UE comprises:

• a transceiver, configured to receive a message sent by a control plane entity (CPE), wherein the message comprises indication information;
• and
• a processor, configured to:
• when the indication information indicates that the suspend function is allowed to be enabled, enable the suspend function of the UE based on the indication information.

A control plane entity (CPE), comprising:

• a processor;
• and
• memory coupled to the processor, the memory comprising instructions that, when executed by the processor, cause the CPE to:
• receive a request message, wherein the request message comprises identification information of user equipment (UE);
• determine whether a suspend function of the UE corresponding to the identification information is allowed to be enabled;
• and
• when the suspend function of the UE is allowed to be enabled, send a message to the UE or a radio access network node (RAN node) connected to the UE, wherein the message comprises indication information indicating that the suspend function is allowed to be enabled.

A radio access network node (RAN node), comprising:

• a processor;
• and
• memory coupled to the processor, the memory comprising instructions that, when executed by the processor, cause the RAN node to:
• receive a message sent by a control plane entity (CPE), wherein the message comprises indication information;
• and
• when the indication information indicates that a suspend function of user equipment (UE) is allowed to be enabled, enable the suspend function of the UE based on the indication information.

User equipment (UE), comprising:

• a processor;
• and
• memory coupled to the processor, the memory comprising instructions that, when executed by the processor, cause the UE to:
• receive a message sent by a control plane entity (CPE), wherein the message comprises indication information;
• and
• when the indication information indicates that the suspend function is allowed to be enabled, enable the suspend function based on the indication information.