Data packet transmission method and device

• US 10,516,977 B2
• Filed: 10/23/2015
• Issued: 12/24/2019
• Est. Priority Date: 04/23/2013
• Status: Active Grant

• Current Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Original Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Inventors: Zhi, Yuliang, Chen, Yanyan
• Primary Examiner(s): Ferris, Derrick W
• Assistant Examiner(s): Ali, Farhad
• Application Number:
  US14/921,219
• Publication Number:
  US 20160044479A1
• Time in Patent Office: 1,523 Days
• CPC Class Codes: H04W 36/02 Buffering or recovering information during reselection ; Modification of the traffic flow during hand-off
• CPC Class Codes: H04W 4/20 Services signaling; Auxiliary data signalling, i.e. transmitting data via a non-traffic channel
• CPC Class Codes: H04W 4/70 Services for machine-to-machine communication [M2M] or machine type communication [MTC]
• CPC Class Codes: H04W 48/20 Selecting an access point
• CPC Class Codes: H04W 68/005 Transmission of information for alerting of incoming communication

Abstract

Embodiments of the present invention provide a data packet transmission method and a device, which relate to the communications field, so as to reduce a storage burden on a base station in a data transmission process. The method includes: acquiring, by a base station that serves a UE, instruction information of a small data packet; and after receiving a radio resource control message sent from the UE, acquiring, by the base station that serves the UE, the small data packet from a core network device according to the instruction information of the small data packet, and sending the small data packet to the UE. The embodiments of the present invention are used for data packet transmission.

Claims

1. A data packet transmission method, comprising:

receiving, by a current base station that serves a user equipment (UE), instruction information of a small data packet from a core network device in which the small data packet is stored, the instruction information of the small data packet for instructing a base station that serves the UE to transmit the small data packet to the UE;

sending, by the current base station that serves the UE, a message to the UE after receiving the instruction information of the small data packet;

receiving, by a target base station that serves the UE after the base station that serves the UE changes from the current base station that serves the UE to the target base station that serves the UE, a radio resource control message sent from the UE that includes the instruction information of the small data packet;

sending, by the target base station that serves the UE after receiving the radio resource control message sent from the UE, a paging message to the core network device according to the instruction information of the small data packet;

receiving, by the target base station, the small data packet from the core network device; and

sending, by the target base station that serves the UE, the small data packet to the UE,

wherein the target base station that serves the UE sends the small data packet to the UE by sending a radio resource control (RRC) connection establishment message to the UE, wherein the RRC connection establishment message comprises the small data packet.

2. The method according to claim 1, wherein the current base station that serves the UE receives the instruction information of the small data packet from the core network device in which the small data packet is stored by receiving a first paging message sent from the core network device, wherein the first paging message comprises the instruction information of the small data packet.

3. The method according to claim 2, wherein after receiving, by the current base station that serves the UE, the first paging message sent from the core network device, the method further comprising at least one of the following:

sending a second paging message to the UE, wherein the second paging message comprises a radio resource control (RRC) connection establishment waiting time, and the RRC connection establishment waiting time is for enabling the UE to send another RRC connection establishment request message to the current base station that serves the UE again when the RRC connection establishment waiting time expires before the RRC connection establishment message sent from the current base station that serves the UE is received; and

sending a second paging message to the UE, wherein the second paging message comprises the instruction information of the small data packet for the UE to send another RRC connection establishment request message to the current base station that serves the UE again when the RRC connection establishment waiting time expires before the RRC connection establishment message sent from the base station that serves the UE is received.

4. A data packet transmission method, comprising:

acquiring, by a core network device, a small data packet;

sending, by the core network device while the small data packet is stored in the core network device, instruction information of the small data packet to a current base station that serves a user equipment (UE);

receiving, by the core network device, a paging message according to the instruction information of the small data packet from a target base station that serves the UE after a base station that serves the UE changes from the current base station that serves the UE to the target base station that serves the UE, the paging message indicating that a radio resource control message sent from the UE that includes the instruction information of the small data packet has been received by the target base station that serves the UE; and

sending, by the core network device, after the paging message is received from the target base station that serves the UE, the small data packet to the target base station that serves the UE, the small data packet enabling the target base station that serves the UE to, after receiving the radio resource control message sent from the UE, send the small data packet to the UE,

wherein the instruction information of the small data packet instructs the base station that serves the UE to transmit the small data packet to the UE; and

sending, by the core network device, a first paging message to the current base station that serves the UE, wherein the first paging message comprises the instruction information of the small data packet, the first paging message enabling the current base station that serves the UE to, after receiving a radio resource control (RRC) connection establishment request message sent from the UE, receive the small data packet from the core network device according to the instruction information of the small data packet and send a radio resource control (RRC) connection establishment message to the UE, wherein the RRC connection establishment message comprises the small data packet.

5. The method according to claim 4, wherein the first paging message further comprises an RRC connection establishment waiting time, the first paging message enabling the current base station that serves the UE to send a second paging message that comprises the RRC connection establishment waiting time to the UE, wherein the RRC connection establishment waiting time is used for enabling the UE to send another RRC connection establishment request message to the base station that serves the UE again when the RRC connection establishment waiting time expires before the RRC connection establishment message sent from the base station that serves the UE is received.

6. The method according to claim 4, wherein a second paging message that is sent from the current base station that serves the UE to the UE comprises the instruction information of the small data packet, the second paging message enabling the UE to send another RRC connection establishment request message to the current base station that serves the UE again when an RRC connection establishment waiting time expires before the RRC connection establishment message sent from the current base station that serves the UE is received.

7. A data packet transmission method, comprising:

receiving, by a user equipment (UE) while a small data packet is stored on a core network device and when a base station that serves the UE is a current base station that serves the UE, instruction information of the small data packet sent from the current base station that serves the UE, the instruction information of the small data packet for instructing the base station that serves the UE to transmit the small data packet to the UE;

sending, by the UE, after the base station that serves the UE changes from the current base station that serves the UE to a target base station that serves the UE, the instruction information of the small data packet to the target base station that serves the UE for receiving the small data packet from the core network device after receiving, by the core network device, a paging message according to the instruction information of the small data packet; and

receiving, by the UE, the small data packet sent from the target base station that serves the UE after the small data packet is received from the core network device by the target base station that serves the UE in response to the paging message according to the instruction information of the small data packet, wherein;

sending, by the UE, the instruction information of the small data packet to the target base station for receiving the small data packet from the core network device according to the instruction information of the small data packet comprises;

sending, by the UE, a radio resource control (RRC) connection establishment request message to the target base station, wherein the RRC connection establishment request message comprises the instruction information of the small data packet, the RRC connection establishment message enabling the target base station to send a information of the small data packet and receive the small data packet that is sent from the core network device according to the paging response message; and

receiving, by the UE, the small data packet sent from the target base station after the small data packet is received from the core network device by the target base station comprises;

receiving, by the UE, an RRC connection establishment message sent from the target base station, wherein the RRC connection establishment message comprises the small data packet.

8. The method according to claim 7, wherein receiving, by the UE while the small data packet is stored on the core network device, the instruction information that is of the small data packet and sent from the current base station that serves the UE comprises:

receiving, by the UE, a second paging message sent from the current base station after the current base station receives a first paging message sent from the core network device, wherein both the first paging message and the second paging message comprise the instruction information of the small data packet.

9. A system, comprising:

a current base station that serves a user equipment (UE), the current base station configured to;

receive instruction information of a small data packet from a core network device in which the small data packet is stored, the instruction information of the small data packet for instructing a base station that serves the UE to transmit the small data packet to the UE, and

send a message to the UE after receiving the instruction information of the small data packet; and

a target base station that serves the UE, the target base station configured to;

receive, after the base station that serves the UE changes from the current base station that serves the UE to the target base station that serves the UE, a radio resource control message sent from the UE that includes the instruction information of the small data packet,

after the radio resource control message sent from the UE is received, send a paging message to the core network device according to the instruction information of the small data packet,

receive the small data packet from the core network device; and

send the small data packet to the UE, wherein the target base station that serves the UE is further configured to send a radio resource control (RRC) connection establishment message to the UE, Wherein the RRC connection establishment message comprises the small data packet.

10. The system according to claim 9, wherein the current base station that serves the UE is further configured to receive a first paging message sent from the core network device, wherein the first paging message comprises the instruction information of the small data packet.

11. The system according to claim 10, wherein the current base station that serves the UE is further configured to, after the first paging message sent from the core network device is received, send a second paging message to the UE, wherein the second paging message comprises an RRC connection establishment waiting time, and the RRC connection establishment waiting time is for enabling the UE to send another RRC connection establishment request message to the current base station that serves the UE again when the RRC connection establishment waiting time expires before the RRC connection establishment message sent from the current base station that serves the UE is received.

12. The system according to claim 10, wherein the current base station that serves the UE is further configured to, after the first paging message sent from the core network device is received, send a second paging message to the UE, wherein the second paging message comprises the instruction information of the small data packet, the second paging message enabling the UE to send another RRC connection establishment request message to the current base station that serves the UE again when an RRC connection establishment waiting time expires before the RRC connection establishment message sent from the current base station that serves the UE is received.

13. A core network device, comprising:

a processor, configured to;

acquire a small data packet, and

receive a paging message according to instruction information of the small data packet from a target base station that serves a user equipment (UE) after a base station that serves the UE changes from a current base station that serves the UE to the target base station that serves the UE, the paging message indicating that a radio resource control message sent from the UE that includes the instruction information of the small data packet has been received by the target base station that serves the UE; and

a transmitter, configured to;

send instruction information of the small data packet to the current base station that serves the UE while the small data packet is stored in the core network device, and

send the small data packet to the target base station that serves the UE after the paging message is received from the target base station that serves the UE the small data packet enabling the target base station that serves the UE to, after receiving the radio resource control message sent from the UE, send the small data packet to the UE,

wherein the instruction information of the small data packet instructs the base station that serves the UE to transmit the small data packet to the UE,

wherein the transmitter is further configured to send a first paging message to the current base station that serves the UE, wherein the first paging message comprises the instruction information of the small data packet, the first paging message enabling the current base station that serves the UE to, after receiving a radio resource control (RRC) connection establishment request message sent from the UE, receive the small data packet from the core network device according to the instruction information of the small data packet and send a radio resource control (RRC) connection establishment message to the UE, wherein the RRC connection establishment message comprises the small data packet.

14. A user equipment (UE), comprising:

a processor, configured to receive while a small data packet is stored on a core network device, instruction information of the small data packet and sent from a current base station that serves the UE, the instruction information of the small data packet for instructing a base station that serves the UE to transmit the small data packet to the UE;

a transmitter, configured to, after the current base station that serves the UE changes to a target base station that serves the UE, send the instruction information of the small data packet and acquired by the processor to the target base station that serves the UE, the instruction information of the small data packet enabling the target base station that serves the UE to receive the small data packet from the core network device after receiving, by the core network device, a paging message according to the instruction information of the small data packet; and

wherein the processor is further configured to receive the small data packet sent from the target base station that serves the UE, which was received from the core network device in response to the paging message according to the instruction information of the small data packet, wherein;

the transmitter is further configured to send a radio resource control (RRC) connection establishment request message to the target base station that serves the UE, wherein the RRC connection establishment request message comprises the instruction information of the small data packet, the RRC connection establishment message enabling the target base station that serves the UE to send a paging response message to the core network device according to the instruction information of the small data packet and receive the small data packet that is sent from the core network device according to the paging response message, and

the processor is further configured to receive a radio resource control (RRC) connection establishment message sent from the target base station that serves the UE, wherein the RRC connection establishment message comprises the small data packet.

15. The UE according to claim 14 wherein the processor is further configured to, after the current base station that serves the UE receives a first paging message sent from the core network device, receive a second paging message sent from the current base station that serves the UE, wherein both the first paging message and the second paging message comprise the instruction information of the small data packet.