Method for cell selection and cell reselection in a time division synchronous code division multiple access (td-scdma) system

A technology of code division multiple access and time division synchronization, which is applied in the field of communication systems and can solve problems such as strong interference in time slot 0, delay in cell residence process, and cell selection failure

Inactive Publication Date: 2017-01-18
SAMSUNG ELECTRONICS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, in a conventional Time Division Synchronous Code Division Multiple Access (TD-SCMDA) communication system where the frame boundaries of cells are time-aligned, there may be strong interference to time slot 0 (TS-0) where the broadcast channel (beacon channel) is transmitted
Under interference conditions, if cell selection is performed based only on conventional Received Signal Strength Indication (RSSI) and Received Signal Code Power (RSCP) Causes cell selection to fail, which causes delay in cell selection
Additionally, failure to read the BCH for the selected cell will cause delays in the cell camping process
Additionally, user experience can be poor during cell search after OOS (Out of Service) while a CS / PS call is in progress and may result in termination of the call

Method used

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  • Method for cell selection and cell reselection in a time division synchronous code division multiple access (td-scdma) system
  • Method for cell selection and cell reselection in a time division synchronous code division multiple access (td-scdma) system
  • Method for cell selection and cell reselection in a time division synchronous code division multiple access (td-scdma) system

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Embodiment Construction

[0013] The present disclosure provides a method and device for providing cell selection in a TD-SCDMA system. In the following detailed description of embodiments of the disclosure, reference is made to the accompanying drawings which form a part hereof, and in which are shown by way of illustration specific embodiments in which the disclosure may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the disclosure, and it is to be understood that other embodiments may be utilized and changes may be made without departing from the scope of the disclosure. Therefore, the following detailed description should not be considered in a limiting sense, and the scope of the present disclosure is defined by the claims and their equivalents.

[0014] Although certain features of the disclosure are shown in some drawings and not in others, this is for convenience only as each feature can be combined with any or all of the other ...

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Abstract

A method for providing cell selection in time division synchronous code division multiple access systems is provided. The method includes generating, by a user equipment (UE), an ordered list of universal absolute radio frequency channel numbers (UARFCNs) based on received signal strength indicator (RSSI) measurements associated with one or more UARFCNs, calculating synchronization downlink (SyncDL) correlation energies associated with the UARFCNS, arranging the one or more UARFCNs based on the RSSI and the associated SyncDL correlation energies, scanning the one or more UARFCNs to detect if one or more serving cells are available to be camped on and selecting a serving cell based on a signal to noise ratio (SNR) threshold associated with the UARFCN.

Description

technical field [0001] The present disclosure relates generally to communication systems, and more particularly, to a method for performing cell reselection for camping on in a wireless communication system. Background technique [0002] In a Global System for Mobile Communications (GSM) system, after selecting a Public Land Mobile Network (PLMN) identity, a User Equipment (UE) may perform a cell selection procedure and a cell reselection procedure to use related network services. The cell selection process allows the UE to quickly camp on the serving cell, receive system information from the PLMN, establish a Radio Resource Control (RRC) link, access the network via a control channel, receive paging messages and reply to paging messages. The cell reselection procedure allows the UE to camp on another target cell with better signal quality than the current serving cell. The cell selection process and cell reselection process herein may only be performed on suitable or accep...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W36/30
CPCH04W48/16H04W56/001H04W88/02H04W36/30
Inventor 冈德斯·文卡塔·玛丽卡尤纳·圣耶夫·瑞迪文卡塔·苏巴·拉奥·曼勒
Owner SAMSUNG ELECTRONICS CO LTD
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