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Method and apparatus that facilitates detecting system information blocks in a heterogeneous network

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Method and apparatus that facilitates detecting system information blocks in a heterogeneous network


Aspects are disclosed for detecting a system information block (SIB) within a heterogeneous network. In one aspect, a type of scheduling information pertaining to an SIB is selected, and a parameter known to a wireless terminal is associated with the type of scheduling information. The wireless terminal then decodes the SIB by deriving the scheduling information from the known parameters, without having to decode a Physical Downlink Control Channel.
Related Terms: Physical Downlink Control Channel Downlink Control Channel Heterogeneous Network Codes Downlink Heterogeneous Scheduling Wireless

Qualcomm Incorporated - Browse recent Qualcomm patents - San Diego, CA, US
USPTO Applicaton #: #20140036838 - Class: 370329 (USPTO) -
Multiplex Communications > Communication Over Free Space >Having A Plurality Of Contiguous Regions Served By Respective Fixed Stations >Channel Assignment

Inventors: Taesang Yoo, Tao Luo, Kibeom Seong

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The Patent Description & Claims data below is from USPTO Patent Application 20140036838, Method and apparatus that facilitates detecting system information blocks in a heterogeneous network.

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CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a Continuation of U.S. Ser. No. 12/860,747, filed Aug. 20, 2010, entitled “METHOD AND APPARATUS THAT FACILITATES DETECTING SYSTEM INFORMATION BLOCKS IN A HETEROGENEOUS NETWORK,” which claims the benefit of U.S. Provisional Patent Application Ser. No. 61/236,254, filed Aug. 24, 2009, entitled “A METHOD AND APPARATUS FOR SYSTEM INFORMATION BLOCK TYPE DETECTION IN HETEROGENEOUS NETWORK.” The aforementioned applications are herein incorporated by reference in their entirety.

BACKGROUND

I. Field

The following description relates generally to wireless communications, and more particularly to detecting system information blocks in heterogeneous networks.

II. Background

Wireless communication systems are widely deployed to provide various types of communication content such as voice, data, and so on. These systems may be multiple-access systems capable of supporting communication with multiple users by sharing the available system resources (e.g., bandwidth and transmit power). Examples of such multiple-access systems include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, 3GPP Long Term Evolution (LTE) systems, and orthogonal frequency division multiple access (OFDMA) systems.

Generally, a wireless multiple-access communication system can simultaneously support communication for multiple wireless terminals. Each terminal communicates with one or more base stations via transmissions on the forward and reverse links. The forward link (or downlink) refers to the communication link from the base stations to the terminals, and the reverse link (or uplink) refers to the communication link from the terminals to the base stations. This communication link may be established via a single-in-single-out, multiple-in-signal-out or a multiple-in-multiple-out (MIMO) system.

A MIMO system employs multiple (NT) transmit antennas and multiple (NR) receive antennas for data transmission. A MIMO channel formed by the NT transmit and NR receive antennas may be decomposed into NS independent channels, which are also referred to as spatial channels, where NS≦min{NT, NR}. Each of the NS independent channels corresponds to a dimension. The MIMO system can provide improved performance (e.g., higher throughput and/or greater reliability) if the additional dimensionalities created by the multiple transmit and receive antennas are utilized.

A MIMO system supports a time division duplex (TDD) and frequency division duplex (FDD) systems. In a TDD system, the forward and reverse link transmissions are on the same frequency region so that the reciprocity principle allows the estimation of the forward link channel from the reverse link channel. This enables the access point to extract transmit beamforming gain on the forward link when multiple antennas are available at the access point.

With respect to system information block transmissions, it is noted that decoding such transmissions has become increasingly more difficult with the expansion of heterogeneous networks (i.e., networks having macro cells, femto cells, and/or pico cells). Namely, wireless terminals within a heterogeneous network may experience interference from multiple base stations transmitting their respective system information blocks. Accordingly, methods and apparatuses which mitigate such interference are desirable.

The above-described deficiencies of current wireless communication systems are merely intended to provide an overview of some of the problems of conventional systems, and are not intended to be exhaustive. Other problems with conventional systems and corresponding benefits of the various non-limiting embodiments described herein may become further apparent upon review of the following description.

SUMMARY

The following presents a simplified summary of one or more embodiments in order to provide a basic understanding of such embodiments. This summary is not an extensive overview of all contemplated embodiments, and is intended to neither identify key or critical elements of all embodiments nor delineate the scope of any or all embodiments. Its sole purpose is to present some concepts of one or more embodiments in a simplified form as a prelude to the more detailed description that is presented later.

In accordance with one or more embodiments and corresponding disclosure thereof, various aspects are described in connection with detecting system information blocks in heterogeneous networks. In one aspect, methods and computer program products are disclosed that facilitate detecting a system information block. These embodiments include selecting a type of scheduling information pertaining to the system information block, and associating a known parameter with the type of scheduling information. For these embodiments, a decoding of the system information block is facilitated by an association of the known parameter with the type of scheduling information independent of a Physical Downlink Control Channel transmission. The system information block is then transmitted to a wireless terminal.

In another aspect, an apparatus configured to facilitate detecting a system information block is disclosed. Within such embodiment, the apparatus includes a processor configured to execute computer executable components stored in memory. The computer executable components include a scheduling component, an association component, and a communication component. The scheduling component is configured to select a type of scheduling information pertaining to the system information block, whereas the association component is configured to associate a known parameter with the type of scheduling information. For this embodiment, a decoding of the system information block is also facilitated by an association of the known parameter with the type of scheduling information independent of a Physical Downlink Control Channel transmission. The communication component is then configured to transmit the system information block to a wireless terminal.

In a further aspect, another apparatus is disclosed. Within such embodiment, the apparatus includes means for selecting, means for associating, and means for transmitting. For this embodiment, the means for selecting selects a type of scheduling information pertaining to the system information block, whereas the means for associating associates a known parameter with the type of scheduling information. For this embodiment, a decoding of the system information block is again facilitated by an association of the known parameter with the type of scheduling information independent of a Physical Downlink Control Channel transmission. The means for transmitting then transmits the system information block to a wireless terminal.

In another aspect, methods and computer program products are disclosed that facilitate detecting a system information block. These embodiments include receiving a transmission of the system information block, and deriving a type of scheduling information associated with the transmission from at least one known parameter. Furthermore, these embodiments include decoding the system information block based on the type of scheduling information. Here, it should be noted that the decoding is performed independent of a Physical Downlink Control Channel transmission.

In another aspect, an apparatus configured to facilitate detecting a system information block is disclosed. Within such embodiment, the apparatus includes a processor configured to execute computer executable components stored in memory. The computer executable components include a communication component, a derivation component, and a decoding component. The communication component is configured to receive a transmission of the system information block, whereas the derivation component is configured to derive scheduling information associated with the transmission from at least one known parameter. The decoding component is then configured to perform a decoding of the system information block based on the type of scheduling information. For this particular embodiment, the decoding is also performed independent of a Physical Downlink Control Channel transmission.

In a further aspect, another apparatus is disclosed. Within such embodiment, the apparatus includes means for receiving, means for deriving, and means for decoding. For this embodiment, the means for receiving receives a transmission of the system information block, whereas the means for deriving derives scheduling information associated with the transmission from at least one known parameter. For this embodiment, the means for decoding then decodes the system information block based on the constraint and the scheduling information. Here, the system information block is again decoded independent of a Physical Downlink Control Channel transmission.

To the accomplishment of the foregoing and related ends, the one or more embodiments comprise the features hereinafter fully described and particularly pointed out in the claims. The following description and the annexed drawings set forth in detail certain illustrative aspects of the one or more embodiments. These aspects are indicative, however, of but a few of the various ways in which the principles of various embodiments can be employed and the described embodiments are intended to include all such aspects and their equivalents.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is an illustration of a wireless communication system in accordance with various aspects set forth herein.



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stats Patent Info
Application #
US 20140036838 A1
Publish Date
02/06/2014
Document #
14050896
File Date
10/10/2013
USPTO Class
370329
Other USPTO Classes
International Class
04L5/00
Drawings
13


Physical Downlink Control Channel
Downlink Control Channel
Heterogeneous Network
Codes
Downlink
Heterogeneous
Scheduling
Wireless


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