Call processing method, call server, base station, and call system

Patent metadata

Field	Value
Publication number	US-10484969-B2
Application number	US-201816166794-A
Country	US
Kind code	B2
Filing date	Oct 22, 2018
Priority date	May 27, 2016
Publication date	Nov 19, 2019
Grant date	Nov 19, 2019

Abstract

A call processing method, including receiving a first call request of a calling terminal for a called terminal, triggering a mobility management entity to control a base station to page the called terminal, performing call waiting according to a paging response message when receiving the paging response message from the mobility management entity indicating that the called terminal is a power saving state and cannot be paged by the base station, and establishing a session coupling between the calling terminal and the called terminal according to addressing information of the called terminal when receiving, in a call waiting process, the addressing information of the called terminal from the mobility management entity.

First claim

What is claimed is:

1. A call processing method, comprising:
receiving, by a call server, a first call request of a calling terminal for a called terminal;
triggering, by the call server according to the first call request, a mobility management entity to control a base station to page the called terminal;
performing, by the call server, call waiting according to a paging response message when receiving the paging response message from the mobility management entity indicating that the called terminal is in a power saving state and cannot be paged by the base station; and
establishing, by the call server, a session coupling between the calling terminal and the called terminal according to addressing information of the called terminal when receiving, in a call waiting process, the addressing information of the called terminal from the mobility management entity, the addressing information indicating that the called terminal is woken up from the power saving state and is paged by the base station.

2. The method of claim 1 , wherein performing the call waiting comprises:
performing, by the call server when a preset condition is met according to the paging response message, the call waiting when the preset condition is met.

3. The method of claim 2 , wherein the preset condition comprises a quantity of calls originated by the calling terminal to the called terminal in a preset time period reaches a preset call quantity threshold.

4. The method of claim 2 , wherein the preset condition comprises a message from the calling terminal instructing to perform the call waiting is received.

5. The method of claim 2 , wherein the preset condition comprises the called terminal subscribes to a call waiting service in advance.

6. The method of claim 2 , wherein the preset condition comprises the calling terminal subscribes to a call waiting service in advance.

7. The method of claim 1 , wherein performing the call waiting comprises starting, by the call server, call waiting timing, and establishing the session coupling between the calling terminal and the called terminal comprising establishing, by the call server, the session coupling between the calling terminal and the called terminal according to the addressing information of the called terminal when receiving the addressing information of the called terminal from the mobility management entity after the call waiting timing is started and before preset call waiting duration elapses.

8. The method of claim 1 , wherein performing the call waiting comprises sending a call waiting instruction message to the calling terminal, the call waiting instruction message instructing the calling terminal to perform the call waiting, establishing the session coupling between the calling terminal and the called terminal comprising sending, by the call server, the first call request to the called terminal according to the addressing information of the called terminal, and the first call request instructing to establish the session coupling between the calling terminal and the called terminal.

9. The method of claim 1 , wherein performing the call waiting comprises:
sending, by the call server, an instruction message instructing to terminate a current call request to the calling terminal;
terminating, by the call server, a current call; and
recording, by the call server, information about the current call, and
establishing the session coupling between the calling terminal and the called terminal comprising sending, by the call server, a second call request instructing to establish the session coupling between the calling terminal and the called terminal to the calling terminal and the called terminal according to the addressing information of the called terminal.

10. A call processing method, comprising:
receiving, by a base station, a paging message from a mobility management entity instructing to page a called terminal;
paging, by the base station, the called terminal according to the paging message;
sending, by the base station to the mobility management entity, a paging response message indicating that the called terminal is in a power saving state and cannot be paged by the base station when the called terminal is in the power saving state and cannot be paged by the base station;
continuously paging, by the base station, the called terminal; and
triggering, by the base station, the mobility management entity to send addressing information of the called terminal to a call server when it is determined, in a continuous paging process, the called terminal is woken up from the power saving state, the addressing information of the called terminal indicating that the called terminal is woken up from the power saving state and is paged by the base station.

11. A call server, comprising:
a receiver configured to receive a first call request of a calling terminal for a called terminal;
a non-transitory computer-readable storage medium coupled to the receiver and configured to store programming instructions; and
at least one processor coupled to the receiver and the non-transitory computer-readable storage medium, the programming instructions causing the at least one processor to be configured to:
trigger according to the first call request, a mobility management entity to control a base station to page the called terminal;
perform call waiting according to a paging response message when the paging response message from the mobility management entity indicating that the called terminal is in a power saving state and cannot be paged by the base station is received; and
establish a session coupling between the calling terminal and the called terminal according to addressing information of the called terminal when the addressing information of the called terminal from the mobility management entity is received in a call waiting process, the addressing information of the called terminal indicating that the called terminal is woken up from the power saving state and is paged by the base station.

12. The call server of claim 11 , wherein the programming instructions further cause the at least one processor to be configured to:
determine whether a preset condition is met according to the paging response message; and
perform the call waiting when the preset condition is met.

13. The call server of claim 12 , wherein the preset condition comprises a quantity of calls originated by the calling terminal to the called terminal in a preset time period reaches a preset call quantity threshold.

14. The call server of claim 12 , wherein the preset condition comprises a message from the calling terminal instructing to perform the call waiting is received.

15. The call server of claim 12 , wherein the preset condition comprises the called terminal subscribes to a call waiting service in advance.

16. The call server of claim 12 , wherein the preset condition comprises the calling terminal subscribes to a call waiting service in advance.

17. The call server of claim 11 , wherein the programming instructions further cause the at least one processor to be configured to:
start call waiting timing; and
establish the session coupling between the calling terminal and the called terminal according to the addressing information of the called terminal when the addressing information of the called terminal from the mobility management entity is received after the call waiting timing is started and before preset call waiting duration elapses.

18. The call server of claim 11 , further comprising a transmitter coupled to the at least one processor and

Assignees

• Huawei Tech Co Ltd

Inventors

• Zhang Huimin
• Huang Kangmin
• Yu Rongdao
• Huang Maosheng

Classifications

• H04W68/005

  Transmission of information for alerting of incoming communication · CPC title

• H04M2207/185

  wireless packet-switched · CPC title

• H04M3/4288

  Notifying a called subscriber of an incoming call during an ongoing call, e.g. Call Waiting · CPC title

• H04L65/1096

  Supplementary features, e.g. call forwarding or call holding (systems providing special services or facilities to telephony subscribers H04M3/42) · CPC title

• H04L65/1069 Primary

  Session establishment or de-establishment · CPC title