Routing method between base stations, serving gateway, and base station

Patent metadata

Field	Value
Publication number	US-2016262197-A1
Application number	US-201615133919-A
Country	US
Kind code	A1
Filing date	Apr 20, 2016
Priority date	Oct 21, 2013
Publication date	Sep 8, 2016
Grant date	—

Abstract

Embodiments of the present invention provide a routing method between base stations, a serving gateway, and a base station, where the method includes: receiving, by a first serving gateway, a first user data packet of first UE sent by a first base station, and determining, according to the first user data packet, whether the first serving gateway serves both the first UE and second UE, where the second UE is a communication peer end of the first UE; and if the first serving gateway determines that the first serving gateway serves both the first UE and the second UE, triggering, by the first serving gateway, the first base station to acquire first routing information required for direct communication with a second base station, and triggering the second base station to acquire second routing information required for direct communication with the first base station.

First claim

What is claimed is:

1 . A routing method between base stations, the method comprising:
receiving, by a first serving gateway, a first user data packet of first user equipment (UE) sent by a first base station, and determining, according to the first user data packet, whether the first serving gateway serves both the first UE and a second UE, wherein the second UE is a communication peer end of the first UE; and if the first serving gateway determines that the first serving gateway serves both the first UE and the second UE, triggering, by the first serving gateway, the first base station to acquire first routing information required for direct communication with a second base station, and triggering, by the first serving gateway, the second base station to acquire second routing information required for direct communication with the first base station, the first routing information and the second routing information are used for the first base station and the second base station to establish a direct connection, wherein the second base station serves the second UE.

2 . The method according to claim 1 , wherein:
the first routing information comprises at least an IP address of the second UE, an IP address of the second base station, and a second tunnel endpoint identifier of a communication tunnel between the first base station and the second base station; and the second routing information comprises at least an IP address of the first UE, an IP address of the first base station, and a first tunnel endpoint identifier of the communication tunnel between the second base station and the first base station.

3 . The method according to claim 1 , wherein determining, according to the first user data packet, whether the first serving gateway serves both the first UE and a second UE comprises:
acquiring, by the first serving gateway, bearer information of the second UE according to the IP address of the second UE comprised in the first user data packet, wherein the bearer information comprises information about a second serving gateway that serves the second UE; and determining, by the first serving gateway according to the information that is comprised in the bearer information of the second UE and is about the second serving gateway that serves the second UE, whether the first serving gateway also serves the second UE, and if the first serving gateway determines that the first serving gateway also serves the second UE, determining, by the first serving gateway, that the first serving gateway serves both the first UE and the second UE.

4 . The method according to claim 1 , wherein determining, according to the first user data packet, whether the first serving gateway serves both the first UE and a second UE comprises:
recording, by the first serving gateway, quintuple information of the first user data packet; and receiving, by the first serving gateway, a second user data packet sent by a packet data network gateway that serves the second UE, determining whether quintuple information of the second user data packet is the same as the quintuple information of the first user data packet, and if the quintuple information of the second user data packet is the same as the quintuple information of the first user data packet, determining that the first serving gateway serves both the first UE and the second UE.

5 . The method according to claim 1 , wherein triggering, by the first serving gateway, the first base station to acquire first routing information required for direct communication with a second base station, and triggering, by the first serving gateway, the second base station to acquire second routing information required for direct communication with the first base station, the first routing information and the second routing information are used for the first base station and the second base station to establish a direct connection comprises:
sending, by the first serving gateway, the first routing information to the first base station by using a first mobility management entity (MME) that serves the first UE, and sending the second routing information to the second base station by using a second MME that serves the second UE, so that the first base station and the second base station establish the direct connection according to the first routing information and the second routing information.

6 . A serving gateway, wherein the serving gateway is a first serving gateway and comprises:
a receiver, configured to receive a first user data packet of first user equipment (UE) sent by a first base station; a processor, configured to determine, according to the first user data packet, whether the first serving gateway serves both the first UE and a second UE, wherein the second UE is a communication peer end of the first UE; and a transmitter, configured to: after the processor determines that the first serving gateway serves both the first UE and the second UE, trigger the first base station to acquire first routing information required for direct communication with a second base station, and trigger, the second base station to acquire second routing information required for direct communication with the first base station, the first routing information and the second routing information are used for the first base station and the second base station to establish a direct connection, wherein the second base station serves the second UE.

7 . The serving gateway according to claim 6 , wherein:
the first routing information comprises at least an IP address of the second UE, an IP address of the second base station, and a second tunnel endpoint identifier of a communication tunnel between the first base station and the second base station; and the second routing information comprises at least an IP address of the first UE, an IP address of the first base station, and a first tunnel endpoint identifier of the communication tunnel between the second base station and the first base station.

8 . The serving gateway according to claim 6 , wherein the processor is configured to:
acquire bearer information of the second UE according to the IP address of the second UE comprised in the first user data packet, wherein the bearer information comprises information about a second serving gateway that serves the second UE; and determine, according to the information that is comprised in the bearer information of the second UE and is about the second serving gateway that serves the second UE, whether the first serving gateway also serves the second UE, and if it is determined that the first serving gateway also serves the second UE, determine that the first serving gateway serves both the first UE and the second UE.

9 . The serving gateway according to claim 6 , wherein the processor is configured to:
record quintuple information of the first user data packet; and determine, according to a second user data packet that is received by the receiver and is sent by a packet data network gateway that serves the second UE, whether quintuple information of the second user data packet is the same as the quintuple information of the first user data packet, and if the quintuple information of the second user data packet is the same as the quintuple information of the first user data packet, determine that the first serving gateway serves both the first UE and the second UE.

10 . The serving gateway according to of claim 6 , wherein the transmitter is configured to:
send the first routing information to the first base station by using a first mobility management entity (MME) that serves the first UE, and send the second routing information to the second base station by using a second MME that serves the second UE, so that t

Assignees

• Huawei Tech Co Ltd

Inventors

• He Ning
• Xiong Chunshan
• Chan Hinghung Anthony
• Zhu Lei

Classifications

• H04W88/16

  Gateway arrangements · CPC title

• H04W76/022 Primary

  Electricity · mapped topic

• H04W40/34

  Modification of an existing route · CPC title

• H04W40/02

  Communication route or path selection, e.g. power-based or shortest path routing · CPC title

• H04W76/00

  Connection management · CPC title