Communication method and device
View Patent ↗Disclosed by the present invention are a communication method and device, wherein the method comprises: a first user plane function (UPF) network element establishing a secondary user plane channel to a secondary radio access network (RAN) network element; the first UPF network element receiving downlink data sent by a data network, and from within said downlink data, sending downlink data that requires distribution to the secondary user plane channel on the basis of data flow information to be distributed, wherein the data flow information to be distributed is stored in the first UPF network element so as to carry out the distribution of data in a 5G system, thus increasing the utilization of radio resources, reducing the delay in switching systems and improving user and system performances.
1. A communication method, comprising:
setting up, by a first User-Plane Function (UPF) network element, a secondary user-plane channel to a secondary Radio Access Network (RAN) network element; and
receiving, by the first UPF network element, downlink data over a data network, and transmitting downlink data to be offloaded, to the secondary user-plane channel according to data-stream-to-be-offloaded information stored in the first UPF network element;
wherein the first UPF network element is a unique UPF network element in a Packet Data Unit (PDU) session connection;
before the setting up, by the first UPF network element, the secondary user-plane channel to the secondary Radio Access Network (RAN) network element, the method further comprises:
receiving, by the first UPF network element, a first request message sent by a Session Management Function (SMF) network element for setting up a user-plane channel, wherein the first request message comprises information about a first secondary user-plane channel, and the data-stream-to-be-offloaded information, and the first secondary user-plane channel is a user-plane channel from the first UPF network element to the secondary RAN network element; and
setting up, by the first UPF network element, the secondary user-plane channel to the secondary RAN network element comprises:
setting up, by the first UPF network element, the secondary user-plane channel from the first UPF network element to the secondary RAN network element according to the information about the first secondary user-plane channel.
2. The communication method according to claim 1 , wherein the data-stream-to-be-offloaded information comprises at least one of a stream identifier, Quality of Service (QoS) information, or Internet Protocol (IP) quintuple information.
3. A User-Plane Function (UPF) network element, comprising a processor and a memory, both of which are connected over a bus, wherein:
the processor is configured to read and execute program in the memory to perform the method according to claim 1 .
4. The UPF network element according to claim 3 , wherein the processor is further configured to send a response message to the request to the SMF network element after the secondary user-plane channel to the secondary RAN network element is setup.
5. The UPF network element according to claim 3 , wherein the data-stream-to-be-offloaded information comprises at least one of a stream identifier, Quality of Service (QoS) information, or Internet Protocol (IP) quintuple information.
6. A computer non-transitory readable storage medium, storing computer executable instructions configured to cause the computer to perform the method according to claim 1 .
7. A communication method, comprising:
setting up, by a first User-Plane Function (UPF) network element, a secondary user-plane channel to a secondary Radio Access Network (RAN) network element; and
receiving, by the first UPF network element, downlink data over a data network, and transmitting downlink data to be offloaded, to the secondary user-plane channel according to data-stream-to-be-offloaded information stored in the first UPF network element;
wherein the first UPF network element is an IP anchor device in a PDU session connection, and the PDU session connection further comprises a second UPF network element which is a user-plane anchor device in the PDU session connection; and
the method further comprises:
receiving, by the second UPF network element, a second request message sent by an SMF network element for setting up a user-plane channel, wherein the second request message comprises information about a second secondary user-plane channel, and the data-stream-to-be-offloaded information, and the second secondary user-plane channel is a user-plane channel from the first UPF network element to the second UPF network element; and
setting up, by the second UPF network element, the secondary user-plane channel from the first UPF network element to the second UPF network element according to the information about the second secondary user-plane channel;
wherein after the setting up, by the first UPF network element, the secondary user-plane channel to the secondary RAN network element, the method further comprises:
sending, by the first UPF network element, a response message to the request to the SMF network element.