US 12,439,329 B2
Handover method and device
Zhe Fu, Dongguan (CN); and Wenqiang Tian, Dongguan (CN)
Assigned to GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD., Dongguan (CN)
Filed by GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD., Dongguan (CN)
Filed on Nov. 11, 2022, as Appl. No. 17/985,618.
Application 17/985,618 is a continuation of application No. PCT/CN2020/090370, filed on May 14, 2020.
Prior Publication US 2023/0073616 A1, Mar. 9, 2023
Int. Cl. H04W 48/18 (2009.01); H04W 36/00 (2009.01)
CPC H04W 48/18 (2013.01) [H04W 36/0011 (2013.01); H04W 36/0064 (2023.05)] 20 Claims
OG exemplary drawing
 
1. A handover method, comprising:
determining, by a first device, a handover behavior based on target slice information, wherein
the target slice information comprises information on a slice supported by a target network element, or information on a slice requested to be handed over and the information on a slice supported by the target network element, wherein the information on a slice supported by the target network element comprises a maximum uplink/downlink data rate for each user on at least one slice, and
the handover behavior comprises: whether to perform handover and/or whether to perform slice remapping or slice fallback during a handover process,
wherein said determining, by the first device, the handover behavior based on the target slice information comprises at least one of:
determining, by the first device, not to perform handover when a Protocol Data Unit (PDU) session or slice requested to be handed over matches a first slice supported by the target network element, and an uplink/downlink data rate for each user of the target network element on the first slice has reached a maximum uplink/downlink data rate for each user on the first slice or would reach the maximum uplink/downlink data rate for each user on the first slice once the terminal device is admitted;
determining, by the first device, to perform handover and to perform slice remapping or slice fallback during the handover process when a PDU session or slice requested to be handed over matches a first slice supported by the target network element, an uplink/downlink data rate for each user of the target network element on the first slice has reached a maximum uplink/downlink data rate for each user on the first slice or would reach the maximum uplink/downlink data rate for each user on the first slice once the terminal device is admitted, and the target network element supports slice modification; or
determining, by the first device, to perform handover when a PDU session or slice requested to be handed over matches a first slice supported by the target network element, an uplink/downlink data rate for each user of the target network element on the first slice has not reached a maximum uplink/downlink data rate for each user on the first slice or would not reach the maximum uplink/downlink data rate for each user on the first slice once the terminal device is admitted.