Service implementation method, apparatus, and system

Abstract

A service implementation method, apparatus, and system are disclosed. The service implementation method includes: receiving, by a serving gateway, a data packet of a terminal device sent by a packet data network gateway; if the data packet is a data packet with a serving priority and the serving gateway has sent a paging trigger message with a serving priority to a mobility management element, skipping, by the serving gateway, sending a paging trigger message to the mobility management element; or if the data packet is a data packet with a serving priority and the serving gateway has sent no paging trigger message with a serving priority to a mobility management element, sending, by the serving gateway, a paging trigger message to the mobility management element; wherein the paging trigger message is used to enable the mobility management element to page the terminal device.

What is claimed is: 
     
       1. A service implementation method, comprising:
 receiving, by a serving gateway, a first data packet of a terminal device sent by a packet data network gateway; 
 determining, by the serving gateway, that the first data packet is with a second priority according to information of a bearer corresponding to the first data packet, wherein the information comprises an allocation and retention priority (ARP) parameter;  
 determining, by the serving gateway, that the data packet is a data packet with a second priority and the second priority is higher than a first priority, wherein the first priority is a priority of in a first downlink data notification message sent to a mobility management entity(MME), wherein the first downlink data notification message is for notifying coming of a second data packet and is for triggering paging the terminal; 
 in response to the second priority is higher than the first priority, sending, by the serving gateway, a second downlink data notification message with the second priority to the MME, wherein the determining that the data packet is with the second priority is according to information of a bearer corresponding to the data packetmobility management entity, wherein the second downlink data notification message is for notifying coming of the first data packet and is for triggering paging the terminal. 
 
     
     
       2. The method according to  claim 1 , further comprising:
 recording, by the serving gateway, the second priority. 
 
     
     
       3. The method according to  claim 1 , wherein the first priority is recorded by the serving gateway. 
     
     
       4. The method according to  claim 1 , wherein before the receiving, the method further comprises:
 sending, by the serving gateway, the first downlink data notification message with the first priority to the MME mobility management entity. 
 
     
     
       5. The method according to  claim 1 , wherein a delay timer in the serving gateway is running. 
     
     
       6. The method according to  claim 1 , wherein the data packet comprises a user-plane data packet. 
     
     
       7. A serving gateway, comprising:
 a receiver, configured to receive a first data packet of a terminal device sent by a packet data network gateway; 
 a processor, coupled to the receiver, configured to determine that the first data packet is with a second priority according to information of a bearer corresponding to the first data packet, and determine that the data packet is a data packet with a second priority and the second priority is higher than a first priority, wherein the first priority is a priority of in a first downlink data notification message sent to a (MME) mobility management entity, wherein the first downlink data notification message is for notifying coming of a second data packet and is for triggering paging the terminal, and wherein the information comprises an allocation and retention priority (ARP) parameter; 
 a transmitter, coupled to the processor, configured to send a second downlink data notification message with the second priority to the MME, mobility management entity in response to the second priority is higher than the first priority, wherein the second downlink data notification message is for notifying coming of the first data packet and is for triggering paging the terminal  
 wherein the processor determines the data packet is with the second priority according to information of a bearer corresponding to the data packet. 
 
     
     
       8. The serving gateway according to  claim 7 , wherein the processor is further configured to record the second priority. 
     
     
       9. The serving gateway according to  claim 7 , wherein the first priority is recorded by the serving gateway. 
     
     
       10. The serving gateway according to  claim 7 , wherein the transmitter is further configured to send the first downlink data notification message with the first priority to the MME mobility management entity. 
     
     
       11. The serving gateway according to  claim 7 , wherein a delay timer in the serving gateway is running. 
     
     
       12. The serving gateway according to  claim 7 , wherein the data packet comprises a user-plane data packet. 
     
     
       13. A service implementation method, comprising:
 receiving, by a mobility management element, a first paging trigger message of a terminal from a serving gateway, wherein the first paging trigger message comprises a first priority;   sending, by the mobility management element, a first paging message to a base station in response to the first paging trigger message;   receiving, by the mobility management element, a second paging trigger message of the terminal from the serving gateway before the mobility management element receives a response of the first paging message, wherein the second paging trigger message comprises a second priority;   determining, by the mobility management element, whether the second priority comprised in the second paging trigger message is higher than the first priority comprised in the first paging trigger message; and   sending, by the mobility management element, a second paging message to the base station, if the second priority is higher than the first priority; and   skipping, by the mobility management element, sending the second paging message to the base station if the second priority is not higher than the first priority.    
     
     
       14. The method according to claim 13, wherein the second paging message comprises the second priority.  
     
     
       15. The method according to claim 14, wherein the second paging trigger message is a downlink data notification message.  
     
     
       16. The method according to claim 15, further comprising:
 paging preferentially, by the base station, the terminal according to the second priority comprised in the second paging message.    
     
     
       17. The method according to claim 15, further comprising:
 sending, by the serving gateway, the first paging trigger message of the terminal to the mobility management element.    
     
     
       18. A mobility management element, comprising:
 a processor; and   a computer readable storage medium storing one or more programs for execution by the processor, the one or more programs including instructions to:   receive a first paging trigger message of a terminal from a serving gateway, wherein the first paging trigger message comprises a first priority;   send a first paging message to a base station in response to the first paging trigger message;   receive a second paging trigger message of the terminal from the serving gateway before the mobility management element receives a response of the first paging message, wherein the second paging trigger message comprises a second priority;   determine whether the second priority comprised in the second paging trigger message is higher than the first priority comprised in the first paging trigger message; and   send a second paging message to the base station if the second priority is higher than the first priority; and   skip sending the second paging message to the base station if the second priority is not higher than the first priority.    
     
     
       19. The mobility management element according to claim 18, wherein the second paging message comprises the second priority.  
     
     
       20. The mobility management element according to claim 19, wherein the second paging trigger message is a downlink data notification message.  
     
     
       21. A communication system, comprising:
 a mobility management element, configured to:
 receive a first paging trigger message of a terminal from a serving gateway, wherein the first paging trigger message comprises a first priority; 
 send a first paging message to a base station in response to the first paging trigger message; 
 receive a second paging trigger message of the terminal from the serving gateway before the mobility management element receives a response of the first paging message, wherein the second paging trigger message comprises a second priority; 
 determine whether the second priority comprised in the second paging trigger message is higher than the first priority comprised in the first paging trigger message; and 
 send a second paging message to the base station, if the second priority is higher than the first priority; 
 wherein the second paging message comprises the second priority; and 
 skip sending the second paging message to the base station if the second priority is not higher than the first priority; 
   the base station, configured to:
 page preferentially the terminal according to the second priority comprised in the second paging message after receiving the second paging message from the mobility management element.  
   
     
     
       22. The method according to claim 2, further comprising:
 receiving, by the serving gateway, another data packet of the terminal device from the packet data network gateway; and   skipping, by the serving gateway, based on a record of the second priority on the serving gateway, sending another downlink data notification message to the mobility management entity in response to the another data packet.    
     
     
       23. The serving gateway according to claim 8, wherein the processor is further configured to:
 receive another data packet of the terminal device from the packet data network gateway; and   skip, based on a record of the second priority on the serving gateway, sending another downlink data notification message to the mobility management entity in response to the another data packet.    
     
     
       24. The method according to claim 13, further comprising:
 receiving, by the mobility management element, a third paging trigger message of a terminal from a serving gateway, wherein the third paging trigger message comprises a third priority;   sending, by the mobility management element, a third paging message to a base station in response to the third paging trigger message;   receiving, by the mobility management element, a fourth paging trigger message of the terminal from the serving gateway before the mobility management element receives a response of the third paging message, wherein the fourth paging trigger message comprises a fourth priority;   determining, by the mobility management element, whether the fourth priority comprised in the fourth paging trigger message is higher than the third priority comprised in the third paging trigger message; and   skipping, by the mobility management element, sending a fourth paging message to the base station, in response to determining that the fourth priority is not higher than the third priority.