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Preamble partition and cell identification procedure in wireless communication systems

A technology of cell identification and allocation method, applied in the directions of access restriction, electrical components, wireless communication, etc., can solve the problem that the hard allocation method cannot be applied to the network environment, the short and heavy waiting time, and the hard allocation method loses the efficiency of the cell ID.

Active Publication Date: 2013-04-10
MEDIATEK INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, such hard allocation methods cannot be applied to different network environments when different numbers of cell types are required
Therefore, the hard allocation method loses cell ID efficiency and is difficult to use for cell planning
[0008] Therefore, how to design a cell ID allocation mechanism that can provide flexible network deployment and efficient utilization of limited cell ID resources with a short re-standby time remains a challenge.

Method used

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  • Preamble partition and cell identification procedure in wireless communication systems
  • Preamble partition and cell identification procedure in wireless communication systems
  • Preamble partition and cell identification procedure in wireless communication systems

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Embodiment Construction

[0022] Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0023] figure 1 is a schematic diagram of a wireless communication system 10 according to an embodiment of the present invention. The wireless communication system 10 includes a plurality of macro base stations (Macro Base Station, hereinafter referred to as MBS) 11-13 (serving multiple cells 14-16 respectively), and a plurality of femto base stations (Femto Base Station, hereinafter referred to as FBS) 21 ~26 (located within the cell coverage of MBS 11~13). After being powered on, the MS 27 receives radio signals transmitted from multiple MBSs as well as FBSs. The MS 27 scans DL channels and performs DL PHY synchronization with the target BS. In general, if MS 27 receives the strongest radio signal from a particular BS (ie, FBS 21), MS 27 selects that BS as a target BS. In one embodiment, the MS 27 identifies the target BS's cell type (ie, a femto ...

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Abstract

Two preamble partition schemes are provided for flexible network deployment and efficient utilization of limited cell identification resources in a wireless network. In a soft partition scheme, the entire preamble sequences are partitioned into several configurable non-overlapping subsets, and each subset is associated with a corresponding cell type. In a hybrid partition scheme, a combination of fixed and configurable subsets is used for preamble partition. The partitioning information is carried in a broadcasting channel broadcasted from base stations to mobile stations. In one embodiment, after a mobile station performs scanning and synchronization with a first base station, it derives the cell type of the first base station from cell identification and partitioning information. The mobile station completes ranging and network entry with the first base station if the cell type is preferred, and starts to perform scanning and synchronization with a second base station if the cell type is non-preferred.

Description

[0001] cross reference [0002] This application claims the following priority under 35 U.S.C.§119: No. 61 / 223,743, filing date is 2009 / 7 / 8, titled "Cell Identification in Wireless Communication Systems" and No. 61 / 229,843, filing date is 2009 / 7 / 30, U.S. provisional application entitled "Preamble Partition in Advanced Wireless Communication Systems." The subject matter of which is hereby incorporated by reference. technical field [0003] The present invention relates to a wireless network communication, and in particular to a cell identification partition and network entry procedure in a wireless communication system. Background technique [0004] In a wireless communication system, such as a wireless communication system defined by the Institute of Electrical and Electronics Engineers (IEEE) 802.16 specification, a base station (Base Station, hereinafter referred to as BS) and a mobile station (Mobile Station, hereinafter referred to as MS) transmit and receive Data ca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W48/10H04W48/20
CPCH04W48/20
Inventor 张育豪陈义升廖培凯
Owner MEDIATEK INC