Handover method with mobile relay station

A mobile relay station, mobile station technology, applied in the communication, electrical components, network topology and other directions between multiple stations, can solve the problems of long-term interruption of communication and difficulty in continuing to provide services, so as to reduce communication interruption and effectively use radio The effect of resources

Active Publication Date: 2009-11-11
ELECTRONICS & TELECOMM RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This results in a prolonged interruption of communication
Therefore, it is difficult to continue to provide services

Method used

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  • Handover method with mobile relay station
  • Handover method with mobile relay station
  • Handover method with mobile relay station

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specific Embodiment approach

[0041] Hereinafter, a handover method using a mobile relay station (MRS) according to an embodiment of the present invention will be more fully described with reference to the accompanying drawings.

[0042] Figure 5 An MRS-initiated handover (HO) procedure according to an embodiment of the present invention is illustrated.

[0043] refer to Figure 5 , when handover is necessary, the MRS 510 transmits a handover request message to the serving base station (serving BS) 520 (S550). The handover request message includes an identifier (ID) of the MRS 510 . The ID of the MRS may include a Basic Communication Identifier (Basic CID) of a Media Access Control (MAC) header. MRS510 uses the existing message MOB_MSHO_REQ defined in IEEE 802.16e or a newly defined message.

[0044] It is assumed that the serving BS 520 previously knows the ID of the MRS 510 and the IDs of the mobile stations (MS) 500 and 502 attached to the MRS 510 (eg, CID of the MAC header) through the backbone ne...

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Abstract

There is provided a handover method by a mobile relay station (MRS) or base station (BS) so as to effectively perform a handover of the MRS and mobile stations (MSs) in an environment in which data iscommunicated through a relay of the MRS. There is also provided a handover method capable of securing backward compatibility of an MS during a handover. There is provided a handover method in which an MRS is considered. It is possible to improve the efficiency of the handover by allowing handovers of the MRS and MSs to which the MRS relays to be initiated by the MRS or BS. It is possible to secure the backward compatibility of the MSs by allowing the MRS to generate and manage a mapping relation between information on communication identifiers (CIDs) of the MSs1 which are changed during the handover, and information on previous CIDs of the MSs.

Description

technical field [0001] The present invention relates to a handover method, and more particularly, to a handover method using a mobile relay station (MRS) in a wireless system. Background technique [0002] figure 1 An example of a mobile relay station (MRS) proposed in IEEE 802.16j is illustrated. [0003] The MRS 110 installed on a mobile device such as a bus, train or cruise provides one or more multiple paths in order to provide high-speed wireless Internet service to passengers. In order to provide services to the mobile station (MS) 120 without interrupting the connection in the broadband mobile Internet system, a handover (HO) function between the MS 120 and the base station (BS) 100 has been considered. To support this handover function, Hard HO (HOO) (Fig. 2a), Fast Base Station Switching (FBSS) (Fig. 2b), and Macrodiversity Handover (MDHO) (Fig. 2c) technologies are proposed in IEEE 802.16e. [0004] Generally, the radio link between BS 100 and MRS 110 is of high...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/26
CPCH04W36/0005H04W84/005H04W36/08H04W36/38H04W36/0055H04W84/047
Inventor 金圣镜张性喆尹喆植
Owner ELECTRONICS & TELECOMM RES INST
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