US 12,088,976 B2
State switching method and apparatus, device, and storage medium
Xingang Huang, Shenzhen (CN); Weiliang Zhang, Shenzhen (CN); Junshan Wei, Shenzhen (CN); and Liquan Yuan, Shenzhen (CN)
Assigned to ZTE CORPORATION, Shenzhen (CN)
Appl. No. 17/794,668
Filed by ZTE Corporation, Shenzhen (CN)
PCT Filed Jan. 18, 2021, PCT No. PCT/CN2021/072519
§ 371(c)(1), (2) Date Jul. 22, 2022,
PCT Pub. No. WO2021/147819, PCT Pub. Date Jul. 29, 2021.
Claims priority of application No. 202010075339.3 (CN), filed on Jan. 22, 2020.
Prior Publication US 2023/0080315 A1, Mar. 16, 2023
Int. Cl. H04Q 11/00 (2006.01)
CPC H04Q 11/0067 (2013.01) [H04Q 2011/0045 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A state transition method, comprising:
verifying, by an Optical Network Unit (ONU), a received Physical Synchronization Sequence (PSync) field; and
only transitioning, by the ONU, a current state according to a verification result, wherein the current state is any one of a hunt state, a pre-sync state, a sync state, and a re-sync state, wherein transitioning, by the ONU, a current state according to a verification result comprises:
when the current state is a hunt state and the verification result is that the verification is passed, transitioning, by the ONU, the hunt state to a pre-sync state;
or, when the current state is a pre-sync state and the verification result is that the verification is passed, transitioning, by the ONU, the pre-sync state to a sync state;
or, when the current state is a sync state and the verification result is that the verification is passed, transitioning, by the ONU, the sync state to a sync state;
or, when the current state is a re-sync state and the verification result is that the verification is passed, transitioning, by the ONU, the re-sync state to a sync state;
wherein when a system pre-correction error rate is 0.01, a value range of K is 5≤K≤8;
or, when a system pre-correction error rate is 0.02, a value range of K is 7≤K≤8.