Communication apparatus and communication method

Patent metadata

Field	Value
Publication number	US-2016112925-A1
Application number	US-201414892394-A
Country	US
Kind code	A1
Filing date	Jun 16, 2014
Priority date	Jun 18, 2013
Publication date	Apr 21, 2016
Grant date	—

Abstract

An electronic device including processing circuitry configured to establish a first wireless communication channel with a user equipment (UE). The device also determines whether a second communication channel of at least a predetermined quality exists between the UE and a non co-baseband basestation (BS) while the first communication channel between the UE and the electronics device is maintained. The first communication channel and the second communication channel use different carrier resources.

First claim

1 - 21 . (canceled)

22 . An electronic device comprising:
processing circuitry configured to establish a first wireless communication channel with a user equipment (UE), determine whether a second communication channel of at least a predetermined quality exists between the UE and a non co-baseband basestation (BS) while the first communication channel between the UE and the electronics device is maintained, wherein the first communication channel and the second communication channel use different carrier resources, wherein the processing circuitry is configured to receive from the non co-baseband BS at least one of an indication of which part of message traffic for the UE the non co-baseband BS is able to communicate, a preamble for random access, system information of a new carrier on which the UE communicates with the non co-baseband BS, and configuration information of control plane protocol for establishing communication between the UE and the non co-baseband BS.

23 . The electronic device of claim 22 , wherein
the processing circuitry is configured to inform the UE on the first communication channel of a determination that the UE is to establish and maintain the second communication channel with the non co-baseband BS while maintaining the first communication channel.

24 . The electronic device of claim 23 , wherein
the processing circuitry does not release data communications with the UE on the first communication channel while the UE establishes and maintains data communications with the non co-baseband BS on the second communications channel.

25 . The electronic device of claim 22 , wherein
the non co-baseband BS is not connected to the electronic device via an optical connection.

26 . The electronic device of claim 22 , wherein
the processing circuitry determines a manner of changing communications with the UE to include establishing and maintaining the second communication channel with the non co-baseband BS at least based on a measuring result of signals from the non co-baseband BS and the UE.

27 . The electronic device of claim 26 , wherein
after the second communication channel is established, the processing circuitry and the non co-baseband BS perform at least one of data transmission of respective control plane configurations, transmission on uplink control channel, and measurements of mobility and wireless link failure.

28 . The electronic device of claim 22 , wherein
the electronic device, UE, and non co-baseband BS share a common control plane.

29 . The electronic device of claim 28 , wherein
the common control plane is a radio resource control (RRC) protocol.

30 . The electronic device of claim 22 , wherein
a frequency band used in the first communication channel is different than a frequency band of the second communication channel.

31 . The electronic device of claim 22 , wherein
the processing circuitry performs lossless handover with the non co-baseband BS by forwarding to a core network sequential data packets and performs data forwarding of a successfully received non-sequential data packet to the non co-baseband BS for subsequent forwarding to the core network.

32 . The electronic device of claim 22 , wherein
the processing circuitry performs seamless handover with the non co-baseband BS by acknowledging packets that have been successfully received from the UE so that the UE can send dropped packets to the non co-baseband BS for forwarding to a core network.

33 . The electronic device of claim 22 , wherein
the processing circuitry performs lossless handover with the non co-baseband BS by acknowledging packets that have been successfully received from the UF so that the UE can resend lost packets to the processing circuitry for forwarding to a core network and the UE can also send different packets to the non co-baseband BS so that the non co-baseband BS can forward the different packets to the core network.

34 . The electronic device of claim 22 , wherein
the processing circuitry performs seamless handover with the non co-baseband BS by acknowledging packets that have been successfully received from the UE for forwarding to a core network so that the UE can also send different packets to the non co-baseband BS and the non co-baseband BS can forward the different packets to the core network.

35 . The electronic device of claim 22 , wherein
the processing circuitry is configured to stop receiving packets from the UE once the UE recognizes that the processing circuitry has failed to send an acknowledgement for a packet that the UE sent to the processing circuitry.

36 . The electronic device of claim 22 , wherein
the processing circuitry in a lossless handover in response to sending a first set of data packets on the first communication channel to the UE and receiving an acknowledge for only a subset of the first set, forwards dropped packets to the non co-baseband BS for relaying to the UE.

37 . The electronic device of claim 22 , wherein
the processing circuitry is configured to stop sending packets to the UE once an acknowledge message indicates that a packet was dropped, and in response the processing circuitry forwards at least one packet that was dropped and any newly received packet to the non co-baseband BS for relaying to the UE.

38 . The electronic device of claim 37 , wherein
the processing circuitry is configured to forward only the newly received packets to the non co-baseband BS for relaying to the UE.

39 . The electronic device of claim 37 , wherein
the processing circuitry is configured to send data packets to the UE from a core network, and once a data end symbol is received, the processing circuitry forwards the data end symbol to the non co-baseband BS for relaying to the UE.

Assignees

• Sony Corp

Inventors

• Qin Zhongbin

Classifications

• H04W36/00692 Primary

  using simultaneous multiple data streams, e.g. cooperative multipoint [CoMP], carrier aggregation [CA] or multiple input multiple output [MIMO] (allocation of physical resources in CoMP or in CA H04L5/0035) · CPC title

• H04W36/023

  Buffering or recovering information during reselection · CPC title

• H04W36/00838

  Resource reservation for handover · CPC title

• H04W36/304 Primary

  due to measured or perceived resources with higher communication quality · CPC title

• H04W36/08

  Reselecting an access point · CPC title