Huawei Technologies Co., Limited

Fangyuan Zhu

Yan Li

Hui Ni

Xiaobo Wu

Yang Xin

Yongcui Li

Weiwei Chong

Haiyang Sun

Shiyong Tan

Clarissa Marquezan

Jianning Liu

Fang Yu

Yizhuang Wu

Feng Yu

Manli Sun

Yaxin Wang

This application provides a method for allocating an IP address, including: establishing, by a session management network element, a session for a terminal apparatus, where the session is used for transmitting a data packet via a control plane network element; allocating, by the session management network element, an IP address to the terminal apparatus; and sending, by the session management network element, the data packet to the terminal apparatus via a mobility management network element, where the data packet includes the IP address. In a case in which the terminal apparatus can obtain the IP address without establishing an additional connection channel, the terminal apparatus can obtain the IP address more flexibly, and occupation of excessive signaling resources can be avoided.

Method and device for allocating and obtaining IP address

Embodiments of this application provide a roaming method. The method includes: A terminal device accesses a second PLMN when the terminal device cannot access a first PLMN, where a dynamic roaming agreement between the second PLMN and the first PLMN is enabled; the terminal device receives indication information from the second PLMN, where the indication information is used to indicate to disable the dynamic roaming agreement between the second PLMN and the first PLMN; and the terminal device sends an access request message to the first PLMN based on the indication information.

Roaming method, apparatus, and system

Embodiments of this application provide a communication method, device, and system. The method includes: A terminal device receives first information from a network device, where the first information includes identification information of a first network slice and information about a first radio resource for accessing the first network slice. The terminal device accesses the first network slice based on the first information by using the first radio resource. According to this method, a success rate of accessing a slice can be improved, so that user experience is improved.

Communication method, apparatus, and system

In a communication method, the method includes: receiving a first AMBR of a slice, where the first AMBR indicates a quantity of GBR resources and a quantity of non-GBR resources in the slice, and the first AMBR is a subscribed slice AMBR or an authorized slice AMBR; determining a second AMBR of the slice based on the first AMBR, a session-AMBR of an activated PDU session of the slice, and a flow control bit rate of a QoS flow of the activated PDU session of the slice, where the flow control bit rate is a GFBR or an MFBR; and performing traffic control on the slice based on the second AMBR. The AMBR of the slice may indicate a quantity of GBR resources and a quantity of non-GBR resources in the slice.

A method includes a communication apparatus receives first parameter information of an air interface scheduling resource allocated by an access network device accessed by a terminal device, where the first parameter information includes a length of a first periodicity and a first start moment. The communication apparatus determines, based on the first parameter information, second parameter information of a scheduling resource for processing first uplink data, where the second parameter information includes a length of a second periodicity and a second start moment. Based on the foregoing solution, the communication apparatus receives the first parameter information of the air interface scheduling resource, and adjusts, based on the first parameter information, a periodicity and/or a start moment for locally processing the uplink data, so that an end-to-end latency is reduced, thereby improving user experience.

Embodiments of this application provide a network slice selection method, a device, and a system, to resolve a problem in a current technology after a terminal device moves out of a service area of a network slice. A method embodiment includes determining, by a mobility management network element, a first network slice information about a first network slice and a second network slice information about a second network slice, the second network slice having a mapping relationship with the first network slice; and sending, by the mobility management network element, a mapping information between the first network slice and the second network slice, the mobility management network element sending the mapping information to an access network device.

Network slice selection method, device, and system

Disclosed is an AMBR control method, device, and system, so that a quality of service (QoS) control mechanism can be used to control use of resources in a network slice by a terminal device. The method includes: a mobility management network element obtaining M pieces of single network slice selection assistance information (S-NSSAI) corresponding to a terminal device and a first slice-AMBR corresponding to each piece of S-NSSAI in the M pieces of S-NSSAI; and sending the M pieces of S-NSSAI and the first slice-AMBR corresponding to each piece of S-NSSAI to an access network device, where the first slice-AMBR corresponding to each piece of S-NSSAI is used to determine a second slice-AMBR corresponding to the S-NSSAI, and the second slice-AMBR corresponding to each piece of S-NSSAI is used to control an aggregate bit rate of non-guaranteed bit rate non-GBR QoS flows in a network slice indicated by the S-NSSAI.

AMBR control method, device, and system

Embodiments of this application disclose a communication method and a communication apparatus, to identify application information of first data, and improve an application analytics success rate. The method includes: A first data analytics network element receives first information of an application from a first network element, where the first information includes first application description information and/or an application status that correspond/corresponds to the application, the first application description information includes an application identifier and first IP information that correspond to the application, and the application status includes a foreground state or a background state of the application; the first data analytics network element determines second information based on the first information; and the first data analytics network element sends the second information to a second network element.

Communication method and communication apparatus

The present disclosure relates to quality of service (QoS) information notification methods, devices, and systems. In one example method, a user plane network element obtains a first QoS notification, where the first QoS notification includes first QoS information used to indicate QoS of a target service. The user plane network element sends first indication information to an application network element to which a QoS notification needs to be reported, where the first indication information is used to indicate a second QoS notification, the second QoS notification includes second QoS information of the target service, and the first QoS notification is the same as the second QoS notification, or the second QoS notification is determined based on the first QoS notification.

Quality of service information notification method, device, and system

A packet transmission method, including receiving, by a session management function network element, first access network tunnel information and second access network tunnel information that correspond to a first service, and sending a downlink forwarding rule to a user plane function network element, where the downlink forwarding rule includes the first access network tunnel information and the second access network tunnel information, and the downlink forwarding rule indicates the user plane function network element to replicate a received downlink packet of the first service, and send downlink packets of the first service through two paths respectively corresponding to the first access network tunnel information and the second access network tunnel information.

Packet transmission method, apparatus, and system

A communication method includes sending, by a source mobility management network element in a first area, a first slice set for a home public land mobile network (PLMN) (HPLMN) of a terminal device to a target mobility management network element in a second area when handing over the terminal device from a source access network device in the first area to a target access network device in the second area, where the first slice set corresponds to a second slice set for the first area, and obtaining, by the target mobility management network element, a third slice set for the second area based on the first slice set.

Communication method and communications apparatus

This application disclose an application discovery solutions. The application discovery method is applied to a first SMF network element, and includes: obtaining a first domain name requested by a terminal device; sending the first domain name to a second SMF network element; and receiving first information from the second SMF network element, where the first information includes information about a first application platform or an IP address of a DNS server corresponding to the first application platform, the first application platform is an application platform on which a first application corresponding to the first domain name is located, and the first information is for obtaining a target IP address corresponding to the first domain name. The terminal device may access, by using the target IP address, the first application corresponding to the first domain name.

Application discovery method, apparatus, and system, and computer storage medium

This application discloses an application discovery method and apparatus, and a system. A session management function network element receives first information from a first network element, and determines second information based on at least the first information and location information of a terminal device. The session management function network element sends the second information to the first network element. The second information is for obtaining a first IP address corresponding to a first domain name.

Method and apparatus, and system for obtaining internet protocol (IP) address corresponding to a domain name

A domain name system query method in which: a first network element receives a DNS query request including a first domain name from a terminal apparatus; the first network element sends first request information which comprises location information of the terminal apparatus and the first domain name to a second network element; the second network element determines, based on the first request information, an IP address and feeds back the IP address to the first network element; and the first network element sends the IP address to the terminal apparatus. When a terminal apparatus performs domain name query, a core network element determines an IP address of an application server based on location information of the terminal apparatus and a queried domain name. In this way, the terminal apparatus obtains an IP address of an application server close to the terminal apparatus, thereby improving service access efficiency of the terminal apparatus.

Domain name system query method and communication apparatus

Embodiments of this application disclose a domain name system server determining method, and a request processing method, apparatus, and system. An embodiment of this application provides a domain name system server determining method, including: A session management function network element determines an address of a first domain name system server based on a first location of user equipment, where the first domain name system server is a local domain name system server that resolves a domain name of a first application into a corresponding first Internet protocol address, which is associated with the first location; and the session management function network element sends the address of the first domain name system server to a first device.

Growing community of inventors

Beijing, China

Fangyuan Zhu