Communication apparatus and mobility method for mobile relay of backhaul links

摘要

The present disclosure relates to a communication apparatus with multiple antenna sets installed on the radio interface between the communication apparatus and on-land base station, and a mobility method for the communication apparatus. In some embodiments, a communication apparatus may include a first antenna and a second antenna separated with a distance; and a digital unit connected to the first and second antennas and configured to support at least one backhaul context with the first antenna and at least another backhaul context with the second antenna at the same time.

主权项

1. A communication apparatus for use as a relay node (RN) between base stations (BSs) and a user equipment (UE) comprising:
a first antenna and a second antenna separated with a distance; and a digital device connected to the first and second antennas and configured to support at least one backhaul context with the first antenna and at least another backhaul context with the second antenna at the same time, wherein the digital device causes the RN to perform operations to:
measure signal strengths heard by the second antenna from a source donor cell and a target donor cell, wherein the UE is being served by the communication apparatus with a first backhaul RN context communicated by the first antenna with the source donor cell;determine that a handover trigger event occurs based on signal strength measurements;create, for the target donor cell, a second backhaul RN context communicated by the second antenna with the target donor cell;send a backhaul RN context change request to the source donor cell and to receive a backhaul RN context change response from the target donor cell; andchange, for the UE, the first backhaul RN context to the second backhaul RN context, after the backhaul RN context change response is received.