METHOD AND DEVICE FOR TRANSMITTING DATA

• US 20150103721A1
• Filed: 12/19/2014
• Published: 04/16/2015
• Est. Priority Date: 08/27/2012
• Status: Active Grant

• Current Assignee: Huawei Device Company Limited (Huawei Investment & Holding Co., Ltd.)
• Original Assignee: Huawei Device Company Limited (Huawei Investment & Holding Co., Ltd.)
• Inventors: YI, Qiang, JIN, Hui, ZHANG, Jun, XUE, Guodong, LI, Na
• Granted Patent: US 9,967,816 B2
• Time in Patent Office: Days
• US Class Current: 370/311
• CPC Class Codes: H04L 67/60 Scheduling or organising the servicing of application requests, e.g. requests for application data transmissions using the analysis and optimisation of the required network resources admission control or resource allocation H04L47/70
• CPC Class Codes: H04W 4/70 Services for machine-to-machine communication [M2M] or machine type communication [MTC]
• CPC Class Codes: H04W 52/0212 managed by the network, e.g. network or access point is master and terminal is slave
• CPC Class Codes: H04W 76/25 Maintenance of established connections
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

Embodiments of the present invention provide a method and device for transmitting data. The method includes: determining, after receiving a first message sent by a user equipment, whether first indication information is set, where the first indication information indicates that a server buffers downlink data to be sent to the user equipment; and when determining that the first indication information is set, retaining a signaling connection to the user equipment, and triggering the server that buffers the downlink data to send the downlink data to the user equipment. The method and device for transmitting data according to the embodiments of the present invention can save power of a user equipment.

Claims

1. A method for transmitting data, comprising:

determining, after receiving a first message sent by a user equipment, whether first indication information is set, wherein the first indication information indicates that a server buffers downlink data to be sent to the user equipment; and

when determining that the first indication information is set, retaining a signaling connection to the user equipment, and triggering the server that buffers the downlink data to send the downlink data to the user equipment.

2. The method according to claim 1, wherein the triggering the server that buffers the downlink data to send the downlink data to the user equipment comprises:

sending a downlink data delivery request message to the server that buffers the downlink data, so as to trigger the server that buffers the downlink data to send the downlink data to the user equipment.

3. The method according to claim 1, wherein the triggering the server that buffers the downlink data to send the downlink data to the user equipment comprises:

sending a first user equipment reachability notification message to a home subscriber server or home location register to which the user equipment belongs, so that the home subscriber server or the home location register sends a second user equipment reachability notification message to the server that buffers the downlink data, so as to trigger the server that buffers the downlink data to send the downlink data to the user equipment.

4. The method according to claim 1, the retaining a signaling connection to the user equipment comprises:

sending a second message comprising second indication information to the user equipment, wherein the second indication information indicates that there is data to be sent to the user equipment, so as to retain the signaling connection to the user equipment.

5. The method according to claim 4, wherein the sending a second message comprising second indication information to the user equipment comprises:

when duration, preset for the user equipment, in which a signaling connection can be retained is less than a predetermined threshold, sending the second message to the user equipment.

6. The method according to claim 1, wherein the method further comprises:

when determining that the first indication information is not set, sending a third message comprising third indication information to the user equipment, wherein the third indication information indicates that there is no downlink data to be sent to the user equipment, so that the user equipment disables a receiver or enters a power saving mode or shuts down according to the third indication information.

7. The method according to claim 1, wherein before the determining, after receiving a first message sent by a user equipment, whether first indication information is set, the method further comprises:

when the user equipment is a time-controlled user equipment, determining whether the current time is within a range of allowed communication time, wherein

the determining whether first indication information is set comprises;

when determining that the current time is within the range of allowed communication time of the user equipment, determining whether the first indication information is set.

8. The method according to claim 1, wherein before the determining whether first indication information is set, the method further comprises:

receiving a second user equipment reachability notification request message that is sent by the home subscriber server or home location register to which the user equipment belongs after the home subscriber server or home location register receives a first user equipment reachability notification request message, and setting the first indication information according to the second user equipment reachability notification request message.

9. The method according to claim 1, wherein before the determining whether first indication information is set, the method further comprises:

receiving data buffering indication information sent by the server that buffers the downlink data, wherein the data buffering indication information indicates that the server buffers the downlink data to be sent to the user equipment, and setting the first indication information according to the data buffering indication information.

10. The method according to claim 1, wherein before the determining whether first indication information is set, the method further comprises:

receiving a context response message sent by a source core network control entity serving the user equipment; and

when the context response message comprises the first indication information, setting the first indication information.

11. A core network control entity, comprising:

a first determining unit, configured to;

after receiving a first message sent by a user equipment, determine whether first indication information is set, wherein the first indication information indicates that a server buffers downlink data to be sent to the user equipment;

a triggering unit, configured to;

when the first determining unit determines that the first indication information is set, trigger the server that buffers the downlink data to send the downlink data to the user equipment; and

a retaining unit, configured to;

when the first determining unit determines that the first indication information is set, retain a signaling connection to the user equipment.

12. The core network control entity according to claim 11, wherein:

the triggering unit is specifically configured to;

send a downlink data delivery request message to the server that buffers the downlink data, so as to trigger the server that buffers the downlink data to send the downlink data to the user equipment.

13. The core network control entity according to claim 11, wherein:

the triggering unit is specifically configured to;

send a first user equipment reachability notification message to a home subscriber server or home location register to which the user equipment belongs, so that the home subscriber server or the home location register sends a second user equipment reachability notification message to the server that buffers the downlink data, so as to trigger the server that buffers the downlink data to send the downlink data to the user equipment.

14. The core network control entity according to claim 11, wherein the retaining unit is specifically configured to:

send a second message comprising second indication information to the user equipment, wherein the second indication information indicates that there is data to be sent to the user equipment, so as to retain the signaling connection to the user equipment.

15. The core network control entity according to claim 14, wherein the retaining unit is specifically configured to:

when duration, preset for the user equipment, in which a signaling connection can be retained is less than a predetermined threshold, send the second message to the user equipment.

16. The core network control entity according to claim 11, wherein the core network control entity further comprises:

a first sending unit, configured to;

when it is determined that the first indication information is not set, send a third message comprising third indication information to the user equipment, wherein the third indication information indicates that there is no downlink data to be sent to the user equipment, so that the user equipment disables a receiver or enters a power saving mode or shuts down according to the third indication information.

17. The core network control entity according to claim 11, wherein the core network control entity further comprises:

a second determining unit, configured to;

when the user equipment is a time-controlled user equipment, determine whether the current time is within a range of allowed communication time, wherein

the first determining unit is specifically configured to;

when the second determining unit determines that the current time is within the range of allowed communication time of the user equipment, determine whether the first indication information is set.

18. The core network control entity according to claim 11, wherein the core network control entity further comprises:

a first receiving unit, configured to receive a second user equipment reachability notification request message that is sent by the home subscriber server or home location register to which the user equipment belongs after the home subscriber server or home location register receives a first user equipment reachability notification request message, and a first setting unit, configured to set the first indication information according to the second user equipment reachability notification request message received by the first receiving unit.

19. The core network control entity according to claim 11, wherein the core network control entity further comprises:

a second receiving unit, configured to receive data buffering indication information sent by the server that buffers the downlink data, wherein the data buffering indication information indicates that the server buffers the downlink data to be sent to the user equipment, and a second setting unit, configured to set the first indication information according to the data buffering indication information.

20. The core network control entity according to claim 11, wherein the core network control entity further comprises:

a third receiving unit, configured to receive a context response message sent by a source core network control entity serving the user equipment; and

a third setting unit, configured to;

when the context response message received by the third receiving unit comprises the first indication information, set the first indication information.