Communication method between core network device and terminal in communication system

• US 10,455,541 B2
• Filed: 03/22/2019
• Issued: 10/22/2019
• Est. Priority Date: 09/29/2016
• 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: Du, Jun, Li, Bingzhao
• Primary Examiner(s): Bhatti, Hashim S
• Application Number:
  US16/361,224
• Publication Number:
  US 20190239183A1
• Time in Patent Office: 214 Days
• CPC Class Codes: H04W 36/0033 with transfer of context information
• CPC Class Codes: H04W 36/144 over a different radio air interface technology
• CPC Class Codes: H04W 4/029 Location-based management or tracking services
• CPC Class Codes: H04W 48/20 Selecting an access point
• CPC Class Codes: H04W 60/04 using triggered events
• CPC Class Codes: H04W 60/06 De-registration or detaching
• CPC Class Codes: H04W 68/00 User notification, e.g. alerting and paging, for incoming communication, change of service or the like
• CPC Class Codes: H04W 68/005 Transmission of information for alerting of incoming communication
• CPC Class Codes: H04W 68/02 Arrangements for increasing efficiency of notification or paging channel
• CPC Class Codes: H04W 68/10 using simulcast notification
• CPC Class Codes: H04W 76/10 Connection setup
• CPC Class Codes: H04W 76/27 Transitions between radio resource control [RRC] states
• CPC Class Codes: H04W 76/30 Connection release
• CPC Class Codes: H04W 88/02 Terminal devices
• CPC Class Codes: H04W 88/08 Access point devices

Abstract

Embodiments of the present application provide a communication method, comprising: receiving, by a first access network device from a core network device, signaling destined for a terminal, wherein the terminal is in a radio resource control (RRC) inactive mode; sending a first paging message to a second access network device for paging the terminal, wherein the first access network device and the second access network device are in same paging area; and receiving, from the second access network device, first indication information indicating that the terminal has connected to the second access network device. In the embodiments of the present application, after receiving the signaling destined for the terminal from the core network device, the first access network device can learn the terminal has connected to the second access network device, and therefore performs proper subsequent processing.

Claims

1. A communication system, comprising a first access network device and a second access network device, wherein both the first access network device and the second access network device are in a same paging area;

wherein the first access network device is configured to;

receive, from a core network device, signaling destined for a terminal in a radio resource control (RRC) inactive mode; and

send a first paging message to the second access network device for paging the terminal;

wherein the second access network device is configured to;

send a second paging message to the terminal after receiving the first paging message;

receive a paging response from the terminal; and

send first indication information to the first access network device, wherein the first indication information indicates that the terminal has connected to the second access network device;

wherein the first access network device is further configured to;

send second indication information to the core network device, to indicate that the terminal has connected to a different access network device than the first access network device;

wherein the second indication information is carried in a signaling failure message, and the signaling failure message indicates that the signaling is not sent to the terminal successfully.

2. The system according to claim 1, wherein the first access network device is further configured to send the signaling destined for the terminal to the second access network device.

3. The system according to claim 1, wherein the different access network device than the first access network device is the second access network device, and the second indication information comprises one or both of the following:

information about the second access network device, and

status information of the terminal.

4. The system according to claim 1, wherein the first access network device is further configured to:

send configuration information to the terminal;

wherein the configuration information instructs the terminal to turn into the RRC inactive mode.

5. The system according to claim 1, wherein the signaling destined for the terminal is one or more of the following:

non-access stratum (NAS) signaling,

radio bearer management signaling,

terminal context modification signaling,

terminal context deletion signaling,

location report signaling,

tracking signaling, and

location service (LCS) signaling.

6. A communication method, comprising:

receiving, by a first access network device from a core network device, signaling destined for a terminal, wherein the terminal is in a radio resource control (RRC) inactive mode;

sending, by the first access network device, a first paging message to a second access network device for paging the terminal, wherein the first access network device and the second access network device are in same paging area;

receiving, by the first access network device from the second access network device, first indication information indicating that the terminal has connected to the second access network device; and

sending, by the first network device, second indication information to the core network device;

wherein the second indication information indicates that the terminal has connected to a different access network device than the first access network device; and

wherein the second indication information is carried in a signaling failure message, and the signaling failure message indicates that the signaling is not sent to the terminal successfully.

7. The method according to claim 6, further comprising:

sending, by the first network device, the signaling destined for the terminal to the second access network device.

8. The method according to claim 6, wherein the different access network device than the first access network device is the second access network device, and wherein the second indication information comprises one or both of the following:

information about the second access network device, and

status information of the terminal.

9. The method according to claim 6, further comprising:

sending, by the first access network device, configuration information to the terminal;

wherein the configuration information instructs the terminal to turn into the RRC inactive mode.

10. The method according to claim 6, wherein the signaling destined for the terminal is one or more of the following:

non-access stratum (NAS) signaling,

radio bearer management signaling,

terminal context modification signaling,

terminal context deletion signaling,

location report signaling,

tracking signaling, and

location service (LCS) signaling.

11. A first access network device, comprising:

a transceiver, a processor, and a memory storing program codes for execution by the processor;

wherein when executed by the processor, the program codes cause the transceiver to;

receive, from a core network device, signaling destined for a terminal in a radio resource control (RRC) inactive mode;

send a first paging message to a second access network device for paging the terminal, wherein the first access network device and the second access network device are in same paging area;

receive, from the second access network device, first indication information indicating that the terminal has connected to the second access network device; and

send second indication information to the core network device;

wherein the second indication information indicates that the terminal has connected to a different access network device than the first access network device; and

wherein the second indication information is carried in a signaling failure message, and the signaling failure message indicates that the signaling is not sent to the terminal successfully.

12. The first access network device according to claim 11, wherein the program codes further cause the transceiver to:

send the signaling destined for the terminal to the second access network device.

13. The first access network device according to claim 11, wherein the different access network device than the first access network device is the second access network device, and the second indication information comprises one or both of the following:

information about the second access network device, and

status information of the terminal.

14. The first access network device according to claim 11, wherein the program codes further cause the transceiver to:

send configuration information to the terminal;

wherein the configuration information instructs the terminal to turn into the RRC inactive mode.

15. The first access network device according to claim 11, wherein the signaling destined for the terminal is one or more of the following:

non-access stratum (NAS) signaling,

radio bearer management signaling,

terminal context modification signaling,

terminal context deletion signaling,

location report signaling,

tracking signaling, and

location service (LCS) signaling.