公开(公告)号：US09942866B2

公开(公告)日：2018-04-10

申请号：US14851078

申请日：2015-09-11

Applicant: Freescale Semiconductor, Inc.

Inventor： Igor Shoihet ,  Ofer Lent ,  Roy M Shor

IPC: H04W56/00 ,  H04W76/06 ,  H04W4/06

CPC classification number: H04W56/0015 ,  H04W4/06 ,  H04W56/003 ,  H04W76/36

Abstract: A method of recovery from a time-synchronization loss in a communication unit between a first processor supporting physical layer communications and a second processor supporting layer-2 communications is described. The method comprises: detecting, by the first processor, that a loss of sync has occurred between the first and second processors; in response to said detecting, stopping sending subsequent physical layer messages from the first processor to the second processor, for example to allow the second processor to consume any old pending messages; re-starting a messaging process by the first processor by sending at least one new message to the second processor with updated System Frame Number, SFN, and Sub-Frame, SF, counter value; and receiving at the first processor at least one subsequent response message from the second processor acknowledging receipt of at least one new message with an indication of the received and updated SFN and SF counter value of that message thereby confirming synchronization being restored.

公开(公告)号：US20170078996A1

公开(公告)日：2017-03-16

申请号：US14851078

申请日：2015-09-11

Applicant: Freescale Semiconductor, Inc.

Inventor： Igor Shoihet ,  Ofer Lent ,  Roy M Shor

IPC: H04W56/00 ,  H04W4/06 ,  H04W76/06

CPC classification number: H04W56/0015 ,  H04W4/06 ,  H04W56/003 ,  H04W76/36

Abstract: A method of recovery from a time-synchronization loss in a communication unit between a first processor supporting physical layer communications and a second processor supporting layer-2 communications is described. The method comprises: detecting, by the first processor, that a loss of sync has occurred between the first and second processors; in response to said detecting, stopping sending subsequent physical layer messages from the first processor to the second processor, for example to allow the second processor to consume any old pending messages; re-starting a messaging process by the first processor by sending at least one new message to the second processor with updated System Frame Number, SFN, and Sub-Frame, SF, counter value; and receiving at the first processor at least one subsequent response message from the second processor acknowledging receipt of at least one new message with an indication of the received and updated SFN and SF counter value of that message thereby confirming synchronization being restored.

Abstract translation: 描述了从支持物理层通信的第一处理器和支持第二层通信的第二处理器之间的通信单元中的时间同步损失中恢复的方法。 该方法包括：由第一处理器检测在第一和第二处理器之间发生同步丢失; 响应于所述检测，停止将后续物理层消息从第一处理器发送到第二处理器，例如允许第二处理器消耗任何旧的待处理消息; 通过用更新的系统帧号，SFN和子帧，SF，计数器值向第二处理器发送至少一个新消息，由第一处理器重新启动消息处理; 以及在所述第一处理器处接收来自所述第二处理器的至少一个后续响应消息，所述至少一个后续响应消息确认接收到所述至少一个新消息，并具有所述消息的接收和更新的SFN和SF计数器值的指示，从而确认恢复同步。