US20090213789A1 - Method and apparatus for processing in read systeminfo state in a wireless communication systems - Google Patents

Method and apparatus for processing in read systeminfo state in a wireless communication systems Download PDF

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Publication number
US20090213789A1
US20090213789A1 US12/091,474 US9147406A US2009213789A1 US 20090213789 A1 US20090213789 A1 US 20090213789A1 US 9147406 A US9147406 A US 9147406A US 2009213789 A1 US2009213789 A1 US 2009213789A1
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systeminfo
issuing
data
controlchannelmac
overheadmessages
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US12/091,474
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Aamod Khandekar
Rajat Prakash
Edward Harrison Teague
Arak Sutivong
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Qualcomm Inc
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Qualcomm Inc
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Assigned to QUALCOMM, INCORPORATED reassignment QUALCOMM, INCORPORATED ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SUTIVONG, ARAK, KHANDEKAR, AAMOD, TEAGUE, EDWARD HARRISON, PRAKASH, RAJAT
Publication of US20090213789A1 publication Critical patent/US20090213789A1/en
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02Power saving arrangements
    • H04W52/0209Power saving arrangements in terminal devices
    • H04W52/0225Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H04W52/0235Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a power saving command
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B17/00Monitoring; Testing
    • H04B17/30Monitoring; Testing of propagation channels
    • H04B17/382Monitoring; Testing of propagation channels for resource allocation, admission control or handover
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/0001Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0026Transmission of channel quality indication
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/0001Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0028Formatting
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/02Arrangements for detecting or preventing errors in the information received by diversity reception
    • H04L1/06Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
    • H04L1/0618Space-time coding
    • H04L1/0675Space-time coding characterised by the signaling
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00Modulated-carrier systems
    • H04L27/26Systems using multi-frequency codes
    • H04L27/2601Multicarrier modulation systems
    • H04L27/2647Arrangements specific to the receiver only
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/08Configuration management of networks or network elements
    • H04L41/0803Configuration setting
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/08Configuration management of networks or network elements
    • H04L41/0866Checking the configuration
    • H04L41/0869Validating the configuration within one network element
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W24/00Supervisory, monitoring or testing arrangements
    • H04W24/10Scheduling measurement reports ; Arrangements for measurement reports
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B17/00Monitoring; Testing
    • H04B17/30Monitoring; Testing of propagation channels
    • H04B17/309Measuring or estimating channel quality parameters
    • H04B17/318Received signal strength
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/0001Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0002Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
    • H04L1/0003Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/08Configuration management of networks or network elements
    • H04L41/0803Configuration setting
    • H04L41/0823Configuration setting characterised by the purposes of a change of settings, e.g. optimising configuration for enhancing reliability
    • H04L41/083Configuration setting characterised by the purposes of a change of settings, e.g. optimising configuration for enhancing reliability for increasing network speed
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W88/00Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02Terminal devices
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00Reducing energy consumption in communication networks
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00Reducing energy consumption in communication networks
    • Y02D30/70Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present disclosure relates generally to wireless communications, and more particularly to methods and apparatus for processing in a Read System Information state in a wireless communication system.
  • Wireless communication systems have become a prevalent means by which a majority of people worldwide have come to communicate.
  • Wireless communication devices have become smaller and more powerful in order to meet consumer needs and to improve portability and convenience.
  • the increase in processing power in mobile devices such as cellular telephones has lead to an increase in demands on wireless network transmission systems.
  • Such systems typically are not as easily updated as the cellular devices that communicate there over.
  • mobile device capabilities expand, it can be difficult to maintain an older wireless network system in a manner that facilitates fully exploiting new and improved wireless device capabilities.
  • Wireless communication systems generally utilize different approaches to generate transmission resources in the form of channels. These systems may be code division multiplexing (CDM) systems, frequency division multiplexing (FDM) systems, and time division multiplexing (TDM) systems.
  • FDM code division multiplexing
  • FDM frequency division multiplexing
  • TDM time division multiplexing
  • One commonly utilized variant of FDM is orthogonal frequency division multiplexing (OFDM) that effectively partitions the overall system bandwidth into multiple orthogonal subcarriers.
  • OFDM orthogonal frequency division multiplexing
  • Each subcarrier can be modulated with data.
  • time division based techniques a each subcarrier can comprise a portion of sequential time slices or time slots.
  • Each user may be provided with a one or more time slot and subcarrier combinations for transmitting and receiving information in a defined burst period or frame.
  • the hopping schemes may generally be a symbol rate hopping scheme or a block hopping scheme.
  • Code division based techniques typically transmit data over a number of frequencies available at any time in a range.
  • data is digitized and spread over available bandwidth, wherein multiple users can be overlaid on the channel and respective users can be assigned a unique sequence code.
  • Users can transmit in the same wide-band chunk of spectrum, wherein each user's signal is spread over the entire bandwidth by its respective unique spreading code.
  • This technique can provide for sharing, wherein one or more users can concurrently transmit and receive.
  • Such sharing can be achieved through spread spectrum digital modulation, wherein a user's stream of bits is encoded and spread across a very wide channel in a pseudo-random fashion.
  • the receiver is designed to recognize the associated unique sequence code and undo the randomization in order to collect the bits for a particular user in a coherent manner.
  • a typical wireless communication network includes one or more base stations that provide a coverage area and one or more mobile (e.g., wireless) terminals that can transmit and receive data within the coverage area.
  • a typical base station can simultaneously transmit multiple data streams for broadcast, multicast, and/or unicast services, wherein a data stream is a stream of data that can be of independent reception interest to a mobile terminal.
  • a mobile terminal within the coverage area of that base station can be interested in receiving one, more than one or all the data streams transmitted from the base station.
  • a mobile terminal can transmit data to the base station or another mobile terminal.
  • the bandwidth and other system resources are assigned utilizing a scheduler.
  • the signals, signal formats, signal exchanges, methods, processes, and techniques disclosed herein provide several advantages over known approaches. These include, for example, reduced signaling overhead, improved system throughput, increased signaling flexibility, reduced information processing, reduced transmission bandwidth, reduced bit processing, increased robustness, improved efficiency, and reduced transmission power.
  • a method for issuing a ControlChannelMAC.Activate command, issuing a OverheadMessages.Activate command and determining if a SystemInfoBlock is received within T ISPSyncAcq seconds.
  • a computer readable medium which comprises a first set of instructions for issuing a ControlChannelMAC.Activate command, a second set of instructions for issuing a OverheadMessages.Activate command and a third set of instructions for determining if a SystemInfoBlock is received within T ISPSyncAcq seconds.
  • an apparatus which comprises means for issuing a ControlChannelMAC.Activate command, means for issuing a OverheadMessages.Activate command and means for determining if a SystemInfoBlock is received within T ISPSyncAcq seconds.
  • 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 embodiments of the one or more embodiments. These embodiments are indicative, however, of but a few of the various ways in which the principles of various embodiments may be employed and the described embodiments are intended to include all such embodiments and their equivalents.
  • FIG. 1 illustrates embodiments of a multiple access wireless communication system.
  • FIG. 2 illustrates embodiments of a transmitter and receiver in a multiple access wireless communication system.
  • FIGS. 3A and 3B illustrate embodiments of superframe structures for a multiple access wireless communication system.
  • FIG. 4 illustrates a communication link between an access terminal and an access network.
  • FIG. 5A illustrates a flow diagram of processing in Read SystemInfo State.
  • FIG. 5B illustrates one or more processors for processing in Read SystemInfo State.
  • a multiple access wireless communication system 100 includes multiple cells, e.g. cells 102 , 104 , and 106 .
  • each cell 102 , 104 , and 106 may include an access point 150 that includes multiple sectors.
  • the multiple sectors are formed by groups of antennas each responsible for communication with access terminals in a portion of the cell.
  • antenna groups 112 , 114 , and 116 each correspond to a different sector.
  • antenna groups 118 , 120 , and 122 each correspond to a different sector.
  • antenna groups 124 , 126 , and 128 each correspond to a different sector.
  • Each cell includes several access terminals which are in communication with one or more sectors of each access point.
  • access terminals 130 and 132 are in communication base 142
  • access terminals 134 and 136 are in communication with access point 144
  • access terminals 138 and 140 are in communication with access point 146 .
  • Controller 130 is coupled to each of the cells 102 , 104 , and 106 .
  • Controller 130 may contain one or more connections to multiple networks, e.g. the Internet, other packet based networks, or circuit switched voice networks that provide information to, and from, the access terminals in communication with the cells of the multiple access wireless communication system 100 .
  • the controller 130 includes, or is coupled with, a scheduler that schedules transmission from and to access terminals. In other embodiments, the scheduler may reside in each individual cell, each sector of a cell, or a combination thereof.
  • an access point may be a fixed station used for communicating with the terminals and may also be referred to as, and include some or all the functionality of, a base station, a Node B, or some other terminology.
  • An access terminal may also be referred to as, and include some or all the functionality of, a user equipment (UE), a wireless communication device, terminal, a mobile station or some other terminology.
  • UE user equipment
  • FIG. 1 depicts physical sectors, i.e. having different antenna groups for different sectors
  • FIG. 1 depicts physical sectors, i.e. having different antenna groups for different sectors
  • other approaches may be utilized. For example, utilizing multiple fixed “beams” that each cover different areas of the cell in frequency space may be utilized in lieu of, or in combination with physical sectors.
  • Such an approach is depicted and disclosed in copending U.S. patent application Ser. No. 11/260,895, entitled “Adaptive Sectorization In Cellular System.”
  • TX data processor 214 formats, codes, and interleaves the traffic data for each data stream based on a particular coding scheme selected for that data stream to provide coded data.
  • the coded data for each data stream may be multiplexed with pilot data using OFDM, or other orthogonalization or non-orthogonalization techniques.
  • the pilot data is typically a known data pattern that is processed in a known manner and may be used at the receiver system to estimate the channel response.
  • the multiplexed pilot and coded data for each data stream is then modulated (i.e., symbol mapped) based on one or more particular modulation schemes (e.g., BPSK, QSPK, M-PSK, or M-QAM) selected for that data stream to provide modulation symbols.
  • the data rate, coding, and modulation for each data stream may be determined by instructions performed on provided by processor 230 .
  • the modulation symbols for all data streams are then provided to a TX processor 220 , which may further process the modulation symbols (e.g., for OFDM).
  • TX processor 220 then provides N T modulation symbol streams to N T transmitters (TMTR) 222 a through 222 t.
  • TMTR N T transmitters
  • Each transmitter 222 receives and processes a respective symbol stream to provide one or more analog signals, and further conditions (e.g., amplifies, filters, and upconverts) the analog signals to provide a modulated signal suitable for transmission over the MIMO channel.
  • N T modulated signals from transmitters 222 a through 222 t are then transmitted from N T antennas 224 a through 224 t , respectively.
  • the transmitted modulated signals are received by N R antennas 252 a through 252 r and the received signal from each antenna 252 is provided to a respective receiver (RCVR) 254 .
  • Each receiver 254 conditions (e.g., filters, amplifies, and downconverts) a respective received signal, digitizes the conditioned signal to provide samples, and further processes the samples to provide a corresponding “received” symbol stream.
  • An RX data processor 260 then receives and processes the N R received symbol streams from N R receivers 254 based on a particular receiver processing technique to provide N T “detected” symbol streams.
  • the processing by RX data processor 260 is described in further detail below.
  • Each detected symbol stream includes symbols that are estimates of the modulation symbols transmitted for the corresponding data stream.
  • RX data processor 260 then demodulates, deinterleaves, and decodes each detected symbol stream to recover the traffic data for the data stream.
  • the processing by RX data processor 218 is complementary to that performed by TX processor 220 and TX data processor 214 at transmitter system 210 .
  • RX data processor 260 may be limited in the number of subcarriers that it may simultaneously demodulate, e.g. 512 subcarriers or 5 MHz, and such a receiver should be scheduled on a single carrier. This limitation may be a function of its FFT range, e.g. sample rates at which the processor 260 may operate, the memory available for FFT, or other functions available for demodulation. Further, the greater the number of subcarriers utilized, the greater the expense of the access terminal.
  • the channel response estimate generated by RX processor 260 may be used to perform space, space/time processing at the receiver, adjust power levels, change modulation rates or schemes, or other actions.
  • RX processor 260 may further estimate the signal-to-noise-and-interference ratios (SNRs) of the detected symbol streams, and possibly other channel characteristics, and provides these quantities to a processor 270 .
  • SNRs signal-to-noise-and-interference ratios
  • RX data processor 260 or processor 270 may further derive an estimate of the “operating” SNR for the system.
  • Processor 270 then provides channel state information (CSI), which may comprise various types of information regarding the communication link and/or the received data stream.
  • the CSI may comprise only the operating SNR.
  • the CSI may comprise a channel quality indicator (CQI), which may be a numerical value indicative of one or more channel conditions.
  • CQI channel quality indicator
  • the CSI is then processed by a TX data processor 278 , modulated by a modulator 280 , conditioned by transmitters 254 a through 254 r, and transmitted back to transmitter system 210 .
  • the modulated signals from receiver system 250 are received by antennas 224 , conditioned by receivers 222 , demodulated by a demodulator 240 , and processed by a RX data processor 242 to recover the CSI reported by the receiver system.
  • the reported CSI is then provided to processor 230 and used to (1) determine the data rates and coding and modulation schemes to be used for the data streams and (2) generate various controls for TX data processor 214 and TX processor 220 .
  • the CSI may be utilized by processor 270 to determine modulation schemes and/or coding rates for transmission, along with other information. This may then be provided to the transmitter which uses this information, which may be quantized, to provide later transmissions to the receiver.
  • Processors 230 and 270 direct the operation at the transmitter and receiver systems, respectively.
  • Memories 232 and 272 provide storage for program codes and data used by processors 230 and 270 , respectively.
  • receiver processing techniques may be used to process the N R received signals to detect the N T transmitted symbol streams.
  • These receiver processing techniques may be grouped into two primary categories (i) spatial and space-time receiver processing techniques (which are also referred to as equalization techniques); and (ii) “successive nulling/equalization and interference cancellation” receiver processing technique (which is also referred to as “successive interference cancellation” or “successive cancellation” receiver processing technique).
  • FIG. 2 discusses a MIMO system
  • the same system may be applied to a multi-input single-output system where multiple transmit antennas, e.g. those on a base station, transmit one or more symbol streams to a single antenna device, e.g. a mobile station.
  • a single output to single input antenna system may be utilized in the same manner as described with respect to FIG. 2 .
  • the processing units at a transmitter may be implemented within one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), processors, controllers, micro-controllers, microprocessors, electronic devices, other electronic units designed to perform the functions described herein, or a combination thereof.
  • ASICs application specific integrated circuits
  • DSPs digital signal processors
  • DSPDs digital signal processing devices
  • PLDs programmable logic devices
  • FPGAs field programmable gate arrays
  • processors controllers, micro-controllers, microprocessors, electronic devices, other electronic units designed to perform the functions described herein, or a combination thereof.
  • the processing units at a receiver may also be implemented within one or more ASICs, DSPs, processors, and so on.
  • the transmission techniques may be implemented with processors (e.g., procedures, functions, and so on) that perform the functions described herein.
  • the software codes may be stored in a memory (e.g., memory 230 , 272 x or 272 y in FIG. 2 ) and executed by a processor (e.g., processor 232 , 270 x or 270 y ).
  • the memory may be implemented within the processor or external to the processor.
  • channels herein refers to information or transmission types that may be transmitted by the access point or access terminal. It does not require or utilize fixed or predetermined blocks of subcarriers, time periods, or other resources dedicated to such transmissions.
  • FIGS. 3A and 3B embodiments of superframe structures for a multiple access wireless communication system are illustrated.
  • FIG. 3A illustrates embodiments of superframe structures for a frequency division duplexed (FDD) multiple access wireless communication system
  • FIG. 3B illustrates embodiments of superframe structures for a time division duplexed (TDD) multiple access wireless communication system.
  • the superframe preamble may be transmitted separately for each carrier or may span all of the carriers of the sector.
  • the forward link transmission is divided into units of superframes.
  • a superframe may consist of a superframe preamble followed by a series of frames.
  • the reverse link and the forward link transmission may occupy different frequency bandwidths so that transmissions on the links do not, or for the most part do not, overlap on any frequency subcarriers.
  • N forward link frames and M reverse link frames define the number of sequential forward link and reverse link frames that may be continuously transmitted prior to allowing transmission of the opposite type of frame. It should be noted that the number of N and M may be vary within a given superframe or between superframes.
  • each superframe may comprise a superframe preamble.
  • the superframe preamble includes a pilot channel that includes pilots that may be used for channel estimation by access terminals, a broadcast channel that includes configuration information that the access terminal may utilize to demodulate the information contained in the forward link frame. Further acquisition information such as timing and other information sufficient for an access terminal to communicate on one of the carriers and basic power control or offset information may also be included in the superframe preamble. In other cases, only some of the above and/or other information may be included in this superframe preamble.
  • each frame may consist of a same or a different number of OFDM symbols, which may constitute a number of subcarriers that may simultaneously utilized for transmission over some defined period. Further, each frame may operate according to a symbol rate hopping mode, where one or more non-contiguous OFDM symbols are assigned to a user on a forward link or reverse link, or a block hopping mode, where users hop within a block of OFDM symbols. The actual blocks or OFDM symbols may or may not hop between frames.
  • FIG. 4 illustrates communication between an access network 404 for transmitting a SystemInfo Block to the access terminal 402 .
  • the access network 404 uses a communication link 406 and based upon predetermined timing, system conditions, or other decision criteria, the access network 404 transmits the SystemInfo Block message over a communication link 406 to the access terminal 402 .
  • Communication between an access terminal (for example the transmitter system 250 of FIG. 2 ) and an access point (for example the transmitter system 210 of FIG. 2 ) occurs using a communication link and based upon predetermined timing, system conditions, or other decision criteria.
  • the communication link may be implemented using communication protocols/standards such as World Interoperability for Microwave Access (WiMAX), infrared protocols such as Infrared Data Association (IrDA), short-range wireless protocols/technologies, Bluetooth® technology, ZigBee® protocol, ultra wide band (UWB) protocol, home radio frequency (HomeRF), shared wireless access protocol (SWAP), wideband technology such as a wireless Ethernet compatibility alliance (WECA), wireless fidelity alliance (Wi-Fi Alliance), 802.11 network technology, public switched telephone network technology, public heterogeneous communications network technology such as the Internet, private wireless communications network, land mobile radio network, code division multiple access (CDMA), wideband code division multiple access (WCDMA), universal mobile telecommunications system (UMTS), advanced mobile phone service (AMPS), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal frequency division multiple (OFDM), orthogonal frequency division multiple access (OFDMA), orthogonal frequency division multiple FLASH (OFDM-FLASH), global system for mobile communications (G
  • the access network 404 is configured to generate the SystemInfo Block and transmitting over a communication link 406 .
  • the access network 404 may incorporate the SystemInfo Block into a data packet 412 or multiple data packets and the data packets 412 are transmitted on a communication link 406 .
  • the SystemInfo Block may be transmitted without being incorporated in packets.
  • the data packets comprise header information that indicates whether those data packets 412 contain the SystemInfo Block.
  • the data packets 412 are transmitted on the link 406 using one or more channels.
  • the access terminal 402 is configured to receive data packets on the communication link 406 , one of which may comprise the SystemInfo Block. Various methods may be used to extract the SystemInfo Block from the link. For example, once the access terminal 402 has extracted the data packets 412 from one of the channels of the link the access terminal 402 may check the header information of the data packets 412 to determine if the data packets 412 comprise the SystemInfo Block. If so, then the access terminal 402 extracts the designated bits of the message and stores the values in memory (such as memory 272 in FIG. 2 ).
  • the access terminal Upon entering the Pilot Acquisition State, the access terminal will tune to the selected OFDMA channel and will search for the pilot. If the access terminal acquires the pilot, it will enter the Read SystemInfo State.
  • the access terminal will issue ControlChannelMAC.Deactivate and OverheadMessages.Deactivate commands and will enter the Network Determination State. While attempting to receive the SystemInfo block, the access terminal will discard any other messages received on the Control Channel.
  • the access terminal When the access terminal receives a SystemInfo block, if the access terminal's revision number is not in the range defined by the MinimumRevision and MaximumRevision fileds (inclusive) specified in the message, the access terminal will issue ControlChannelMAC.Deactivate and Overheadmessages.Deactivate commands and enter the Network Determination State. Otherwise, the access terminal will set the access terminal time to the time specified in the SystemInfo block. The time specified in the block is the time at the beginning of the superframe where the message transmission started. This time is accurate to the twelve least significant digits and is enough for the access terminal to read the ExtendedChannelInfo message (on the Forward Traffic Channel MAC) that contains the complete time. The access terminal also returns a NetworkAcquired indication and enters the Inactive State.
  • FIG. 5A illustrates a flow diagram of the process 500 of processing in Read SystemInfo State, according to an embodiment.
  • the access terminal issues ControlChannelMAC.Activate command.
  • the access terminal issues OverheadMessages.Activate command.
  • systemInfo block is received within T ISPSyncAcq seconds, according to one embodiment, it is further determined if revision number is not in range specified in the SystemInfo block.
  • Determining revision number increases the efficiency of the access terminal such that one or more of aforementioned embodiments need not occur.
  • time is set to the time in the SystemInfo block.
  • AT 512 a network acquired indication is retuned.
  • the access terminal enters the Inactive State.
  • the access terminal issues ControlChannelMAC.deactivate and Overhead Messages.deactivate commands.
  • the access terminal further enters the Network determination State at 518 .
  • FIG. 5B illustrates a processor 550 for processing in Read SystemInfo state.
  • the processor referred to may be electronic devices and may comprise one or more processors to carry out the methodologies for processing in Read SystemInfo state.
  • a processor 552 is configured to issue ControlChannelMAC.Activate command.
  • a processor 554 is configured to issue OverheadMessages.Activate command.
  • a processor 556 is configured to determine if SystemInfo block is received within T ISPSyncAcq seconds. Determining if System SystemInfo block is received within T ISPSyncAcq seconds increases processing efficiency such that one or more of aforementioned embodiments need not occur.
  • a processor 558 is configured to determine if revision number is not in range specified in the SystemInfo block.
  • a processor 560 is configured to set the time to the time in the SystemInfo block.
  • a processor 562 is configured to return a network acquired indication.
  • a processor 564 is configured to enter Inactive State.
  • a processor 566 is configured to issue ControlChannelMAC.deactivate and Overhead Messages.deactivate commands.
  • a processor 568 is configured to enter the Network determination State. The functionality of the discrete processors 552 and 568 depicted in the figure may be combined into a single processor 570 .
  • a memory 572 is also coupled to the processor 570 .
  • embodiments may be implemented by hardware, software, firmware, middleware, microcode, or any combination thereof.
  • the program code or code segments to perform the necessary tasks may be stored in a machine readable medium such as a separate storage(s) not shown.
  • a processor may perform the necessary tasks.
  • a code segment may represent a procedure, a function, a subprogram, a program, a routine, a subroutine, a module, a software package, a class, or any combination of instructions, data structures, or program statements.
  • a code segment may be coupled to another code segment or a hardware circuit by passing and/or receiving information, data, arguments, parameters, or memory contents. Information, arguments, parameters, data, etc. may be passed, forwarded, or transmitted via any suitable means including memory sharing, message passing, token passing, network transmission, etc.

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Abstract

A method and apparatus for processing in Read SystemInfo state in a wireless communication network, the method comprising issuing a ControlChannelMAC.Activate command, issuing a OverheadMessages.Activate command and determining if a SystemInfoBlock is received within TISPSyncAcq seconds.

Description

    CLAIM OF PRIORITY UNDER 35 U.S.C. § 119
  • The present Application for Patent claims priority to Provisional Application Ser. No. 60/731,126, entitled “METHODS AND APPARATUS FOR PROVIDING MOBILE BROADBAND WIRELESS LOWER MAC”, field Oct. 27, 2005, assigned to the assignee hereof, and expressly incorporated herein by reference.
  • BACKGROUND
  • 1. Field
  • The present disclosure relates generally to wireless communications, and more particularly to methods and apparatus for processing in a Read System Information state in a wireless communication system.
  • 2. Background
  • Wireless communication systems have become a prevalent means by which a majority of people worldwide have come to communicate. Wireless communication devices have become smaller and more powerful in order to meet consumer needs and to improve portability and convenience. The increase in processing power in mobile devices such as cellular telephones has lead to an increase in demands on wireless network transmission systems. Such systems typically are not as easily updated as the cellular devices that communicate there over. As mobile device capabilities expand, it can be difficult to maintain an older wireless network system in a manner that facilitates fully exploiting new and improved wireless device capabilities.
  • Wireless communication systems generally utilize different approaches to generate transmission resources in the form of channels. These systems may be code division multiplexing (CDM) systems, frequency division multiplexing (FDM) systems, and time division multiplexing (TDM) systems. One commonly utilized variant of FDM is orthogonal frequency division multiplexing (OFDM) that effectively partitions the overall system bandwidth into multiple orthogonal subcarriers. These subcarriers may also be referred to as tones, bins, and frequency channels. Each subcarrier can be modulated with data. With time division based techniques, a each subcarrier can comprise a portion of sequential time slices or time slots. Each user may be provided with a one or more time slot and subcarrier combinations for transmitting and receiving information in a defined burst period or frame. The hopping schemes may generally be a symbol rate hopping scheme or a block hopping scheme.
  • Code division based techniques typically transmit data over a number of frequencies available at any time in a range. In general, data is digitized and spread over available bandwidth, wherein multiple users can be overlaid on the channel and respective users can be assigned a unique sequence code. Users can transmit in the same wide-band chunk of spectrum, wherein each user's signal is spread over the entire bandwidth by its respective unique spreading code. This technique can provide for sharing, wherein one or more users can concurrently transmit and receive. Such sharing can be achieved through spread spectrum digital modulation, wherein a user's stream of bits is encoded and spread across a very wide channel in a pseudo-random fashion. The receiver is designed to recognize the associated unique sequence code and undo the randomization in order to collect the bits for a particular user in a coherent manner.
  • A typical wireless communication network (e.g., employing frequency, time, and/or code division techniques) includes one or more base stations that provide a coverage area and one or more mobile (e.g., wireless) terminals that can transmit and receive data within the coverage area. A typical base station can simultaneously transmit multiple data streams for broadcast, multicast, and/or unicast services, wherein a data stream is a stream of data that can be of independent reception interest to a mobile terminal. A mobile terminal within the coverage area of that base station can be interested in receiving one, more than one or all the data streams transmitted from the base station. Likewise, a mobile terminal can transmit data to the base station or another mobile terminal. In these systems the bandwidth and other system resources are assigned utilizing a scheduler.
  • The signals, signal formats, signal exchanges, methods, processes, and techniques disclosed herein provide several advantages over known approaches. These include, for example, reduced signaling overhead, improved system throughput, increased signaling flexibility, reduced information processing, reduced transmission bandwidth, reduced bit processing, increased robustness, improved efficiency, and reduced transmission power.
  • 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.
  • According to one embodiment, a method is provided for issuing a ControlChannelMAC.Activate command, issuing a OverheadMessages.Activate command and determining if a SystemInfoBlock is received within TISPSyncAcq seconds.
  • According to yet another embodiment, a computer readable medium is described which comprises a first set of instructions for issuing a ControlChannelMAC.Activate command, a second set of instructions for issuing a OverheadMessages.Activate command and a third set of instructions for determining if a SystemInfoBlock is received within TISPSyncAcq seconds.
  • According to yet another embodiment, an apparatus is described which comprises means for issuing a ControlChannelMAC.Activate command, means for issuing a OverheadMessages.Activate command and means for determining if a SystemInfoBlock is received within TISPSyncAcq seconds.
  • 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 embodiments of the one or more embodiments. These embodiments are indicative, however, of but a few of the various ways in which the principles of various embodiments may be employed and the described embodiments are intended to include all such embodiments and their equivalents.
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 illustrates embodiments of a multiple access wireless communication system.
  • FIG. 2 illustrates embodiments of a transmitter and receiver in a multiple access wireless communication system.
  • FIGS. 3A and 3B illustrate embodiments of superframe structures for a multiple access wireless communication system.
  • FIG. 4 illustrates a communication link between an access terminal and an access network.
  • FIG. 5A illustrates a flow diagram of processing in Read SystemInfo State.
  • FIG. 5B illustrates one or more processors for processing in Read SystemInfo State.
  • DETAILED DESCRIPTION
  • Various embodiments are now described with reference to the drawings, wherein like reference numerals are used to refer to like elements throughout. In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more embodiments. It may be evident, however, that such embodiment(s) may be practiced without these specific details. In other instances, well-known structures and devices are shown in block diagram form in order to facilitate describing one or more embodiments.
  • Referring to FIG. 1, a multiple access wireless communication system according to one embodiment is illustrated. A multiple access wireless communication system 100 includes multiple cells, e.g. cells 102, 104, and 106. In the embodiment of FIG. 1, each cell 102, 104, and 106 may include an access point 150 that includes multiple sectors. The multiple sectors are formed by groups of antennas each responsible for communication with access terminals in a portion of the cell. In cell 102, antenna groups 112, 114, and 116 each correspond to a different sector. In cell 104, antenna groups 118, 120, and 122 each correspond to a different sector. In cell 106, antenna groups 124, 126, and 128 each correspond to a different sector.
  • Each cell includes several access terminals which are in communication with one or more sectors of each access point. For example, access terminals 130 and 132 are in communication base 142, access terminals 134 and 136 are in communication with access point 144, and access terminals 138 and 140 are in communication with access point 146.
  • Controller 130 is coupled to each of the cells 102, 104, and 106. Controller 130 may contain one or more connections to multiple networks, e.g. the Internet, other packet based networks, or circuit switched voice networks that provide information to, and from, the access terminals in communication with the cells of the multiple access wireless communication system 100. The controller 130 includes, or is coupled with, a scheduler that schedules transmission from and to access terminals. In other embodiments, the scheduler may reside in each individual cell, each sector of a cell, or a combination thereof.
  • As used herein, an access point may be a fixed station used for communicating with the terminals and may also be referred to as, and include some or all the functionality of, a base station, a Node B, or some other terminology. An access terminal may also be referred to as, and include some or all the functionality of, a user equipment (UE), a wireless communication device, terminal, a mobile station or some other terminology.
  • It should be noted that while FIG. 1, depicts physical sectors, i.e. having different antenna groups for different sectors, other approaches may be utilized. For example, utilizing multiple fixed “beams” that each cover different areas of the cell in frequency space may be utilized in lieu of, or in combination with physical sectors. Such an approach is depicted and disclosed in copending U.S. patent application Ser. No. 11/260,895, entitled “Adaptive Sectorization In Cellular System.”
  • Referring to FIG. 2, a block diagram of an embodiment of a transmitter system 210 and a receiver system 250 in a MIMO system 200 is illustrated. At transmitter system 210, traffic data for a number of data streams is provided from a data source 212 to transmit (TX) data processor 214. In an embodiment, each data stream is transmitted over a respective transmit antenna. TX data processor 214 formats, codes, and interleaves the traffic data for each data stream based on a particular coding scheme selected for that data stream to provide coded data.
  • The coded data for each data stream may be multiplexed with pilot data using OFDM, or other orthogonalization or non-orthogonalization techniques. The pilot data is typically a known data pattern that is processed in a known manner and may be used at the receiver system to estimate the channel response. The multiplexed pilot and coded data for each data stream is then modulated (i.e., symbol mapped) based on one or more particular modulation schemes (e.g., BPSK, QSPK, M-PSK, or M-QAM) selected for that data stream to provide modulation symbols. The data rate, coding, and modulation for each data stream may be determined by instructions performed on provided by processor 230.
  • The modulation symbols for all data streams are then provided to a TX processor 220, which may further process the modulation symbols (e.g., for OFDM). TX processor 220 then provides NT modulation symbol streams to NT transmitters (TMTR) 222 a through 222 t. Each transmitter 222 receives and processes a respective symbol stream to provide one or more analog signals, and further conditions (e.g., amplifies, filters, and upconverts) the analog signals to provide a modulated signal suitable for transmission over the MIMO channel. NT modulated signals from transmitters 222 a through 222 t are then transmitted from NT antennas 224 a through 224 t, respectively.
  • At receiver system 250, the transmitted modulated signals are received by NR antennas 252 a through 252 r and the received signal from each antenna 252 is provided to a respective receiver (RCVR) 254. Each receiver 254 conditions (e.g., filters, amplifies, and downconverts) a respective received signal, digitizes the conditioned signal to provide samples, and further processes the samples to provide a corresponding “received” symbol stream.
  • An RX data processor 260 then receives and processes the NR received symbol streams from NR receivers 254 based on a particular receiver processing technique to provide NT “detected” symbol streams. The processing by RX data processor 260 is described in further detail below. Each detected symbol stream includes symbols that are estimates of the modulation symbols transmitted for the corresponding data stream. RX data processor 260 then demodulates, deinterleaves, and decodes each detected symbol stream to recover the traffic data for the data stream. The processing by RX data processor 218 is complementary to that performed by TX processor 220 and TX data processor 214 at transmitter system 210.
  • RX data processor 260 may be limited in the number of subcarriers that it may simultaneously demodulate, e.g. 512 subcarriers or 5 MHz, and such a receiver should be scheduled on a single carrier. This limitation may be a function of its FFT range, e.g. sample rates at which the processor 260 may operate, the memory available for FFT, or other functions available for demodulation. Further, the greater the number of subcarriers utilized, the greater the expense of the access terminal.
  • The channel response estimate generated by RX processor 260 may be used to perform space, space/time processing at the receiver, adjust power levels, change modulation rates or schemes, or other actions. RX processor 260 may further estimate the signal-to-noise-and-interference ratios (SNRs) of the detected symbol streams, and possibly other channel characteristics, and provides these quantities to a processor 270. RX data processor 260 or processor 270 may further derive an estimate of the “operating” SNR for the system. Processor 270 then provides channel state information (CSI), which may comprise various types of information regarding the communication link and/or the received data stream. For example, the CSI may comprise only the operating SNR. In other embodiments, the CSI may comprise a channel quality indicator (CQI), which may be a numerical value indicative of one or more channel conditions. The CSI is then processed by a TX data processor 278, modulated by a modulator 280, conditioned by transmitters 254 a through 254 r, and transmitted back to transmitter system 210.
  • At transmitter system 210, the modulated signals from receiver system 250 are received by antennas 224, conditioned by receivers 222, demodulated by a demodulator 240, and processed by a RX data processor 242 to recover the CSI reported by the receiver system. The reported CSI is then provided to processor 230 and used to (1) determine the data rates and coding and modulation schemes to be used for the data streams and (2) generate various controls for TX data processor 214 and TX processor 220. Alternatively, the CSI may be utilized by processor 270 to determine modulation schemes and/or coding rates for transmission, along with other information. This may then be provided to the transmitter which uses this information, which may be quantized, to provide later transmissions to the receiver.
  • Processors 230 and 270 direct the operation at the transmitter and receiver systems, respectively. Memories 232 and 272 provide storage for program codes and data used by processors 230 and 270, respectively.
  • At the receiver, various processing techniques may be used to process the NR received signals to detect the NT transmitted symbol streams. These receiver processing techniques may be grouped into two primary categories (i) spatial and space-time receiver processing techniques (which are also referred to as equalization techniques); and (ii) “successive nulling/equalization and interference cancellation” receiver processing technique (which is also referred to as “successive interference cancellation” or “successive cancellation” receiver processing technique).
  • While FIG. 2 discusses a MIMO system, the same system may be applied to a multi-input single-output system where multiple transmit antennas, e.g. those on a base station, transmit one or more symbol streams to a single antenna device, e.g. a mobile station. Also, a single output to single input antenna system may be utilized in the same manner as described with respect to FIG. 2.
  • The transmission techniques described herein may be implemented by various means. For example, these techniques may be implemented in hardware, firmware, software, or a combination thereof. For a hardware implementation, the processing units at a transmitter may be implemented within one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), processors, controllers, micro-controllers, microprocessors, electronic devices, other electronic units designed to perform the functions described herein, or a combination thereof. The processing units at a receiver may also be implemented within one or more ASICs, DSPs, processors, and so on.
  • For a software implementation, the transmission techniques may be implemented with processors (e.g., procedures, functions, and so on) that perform the functions described herein. The software codes may be stored in a memory (e.g., memory 230, 272 x or 272 y in FIG. 2) and executed by a processor (e.g., processor 232, 270 x or 270 y). The memory may be implemented within the processor or external to the processor.
  • It should be noted that the concept of channels herein refers to information or transmission types that may be transmitted by the access point or access terminal. It does not require or utilize fixed or predetermined blocks of subcarriers, time periods, or other resources dedicated to such transmissions.
  • Referring to FIGS. 3A and 3B, embodiments of superframe structures for a multiple access wireless communication system are illustrated. FIG. 3A illustrates embodiments of superframe structures for a frequency division duplexed (FDD) multiple access wireless communication system, while FIG. 3B illustrates embodiments of superframe structures for a time division duplexed (TDD) multiple access wireless communication system. The superframe preamble may be transmitted separately for each carrier or may span all of the carriers of the sector.
  • In both FIGS. 3A and 3B, the forward link transmission is divided into units of superframes. A superframe may consist of a superframe preamble followed by a series of frames. In an FDD system, the reverse link and the forward link transmission may occupy different frequency bandwidths so that transmissions on the links do not, or for the most part do not, overlap on any frequency subcarriers. In a TDD system, N forward link frames and M reverse link frames define the number of sequential forward link and reverse link frames that may be continuously transmitted prior to allowing transmission of the opposite type of frame. It should be noted that the number of N and M may be vary within a given superframe or between superframes.
  • In both FDD and TDD systems each superframe may comprise a superframe preamble. In certain embodiments, the superframe preamble includes a pilot channel that includes pilots that may be used for channel estimation by access terminals, a broadcast channel that includes configuration information that the access terminal may utilize to demodulate the information contained in the forward link frame. Further acquisition information such as timing and other information sufficient for an access terminal to communicate on one of the carriers and basic power control or offset information may also be included in the superframe preamble. In other cases, only some of the above and/or other information may be included in this superframe preamble.
  • As shown in FIGS. 3A and 3B, the superframe preamble is followed by a sequence of frames. Each frame may consist of a same or a different number of OFDM symbols, which may constitute a number of subcarriers that may simultaneously utilized for transmission over some defined period. Further, each frame may operate according to a symbol rate hopping mode, where one or more non-contiguous OFDM symbols are assigned to a user on a forward link or reverse link, or a block hopping mode, where users hop within a block of OFDM symbols. The actual blocks or OFDM symbols may or may not hop between frames.
  • FIG. 4 illustrates communication between an access network 404 for transmitting a SystemInfo Block to the access terminal 402. Using a communication link 406 and based upon predetermined timing, system conditions, or other decision criteria, the access network 404 transmits the SystemInfo Block message over a communication link 406 to the access terminal 402. Communication between an access terminal (for example the transmitter system 250 of FIG. 2) and an access point (for example the transmitter system 210 of FIG. 2)occurs using a communication link and based upon predetermined timing, system conditions, or other decision criteria. The communication link may be implemented using communication protocols/standards such as World Interoperability for Microwave Access (WiMAX), infrared protocols such as Infrared Data Association (IrDA), short-range wireless protocols/technologies, Bluetooth® technology, ZigBee® protocol, ultra wide band (UWB) protocol, home radio frequency (HomeRF), shared wireless access protocol (SWAP), wideband technology such as a wireless Ethernet compatibility alliance (WECA), wireless fidelity alliance (Wi-Fi Alliance), 802.11 network technology, public switched telephone network technology, public heterogeneous communications network technology such as the Internet, private wireless communications network, land mobile radio network, code division multiple access (CDMA), wideband code division multiple access (WCDMA), universal mobile telecommunications system (UMTS), advanced mobile phone service (AMPS), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal frequency division multiple (OFDM), orthogonal frequency division multiple access (OFDMA), orthogonal frequency division multiple FLASH (OFDM-FLASH), global system for mobile communications (GSM), single carrier (1×) radio transmission technology (RTT), evolution data only (EV-DO) technology, general packet radio; service (GPRS), enhanced data GSM environment (EDGE), high speed downlink data packet access (HSPDA), analog and digital satellite systems, and any other technologies/protocols that may be used in at least one of a wireless communications network and a data communications network.
  • The access network 404 is configured to generate the SystemInfo Block and transmitting over a communication link 406. The access network 404 may incorporate the SystemInfo Block into a data packet 412 or multiple data packets and the data packets 412 are transmitted on a communication link 406. In another aspect, the SystemInfo Block may be transmitted without being incorporated in packets. The data packets comprise header information that indicates whether those data packets 412 contain the SystemInfo Block. The data packets 412 are transmitted on the link 406 using one or more channels.
  • The access terminal 402 is configured to receive data packets on the communication link 406, one of which may comprise the SystemInfo Block. Various methods may be used to extract the SystemInfo Block from the link. For example, once the access terminal 402 has extracted the data packets 412 from one of the channels of the link the access terminal 402 may check the header information of the data packets 412 to determine if the data packets 412 comprise the SystemInfo Block. If so, then the access terminal 402 extracts the designated bits of the message and stores the values in memory (such as memory 272 in FIG. 2).
  • Upon entering the Pilot Acquisition State, the access terminal will tune to the selected OFDMA channel and will search for the pilot. If the access terminal acquires the pilot, it will enter the Read SystemInfo State.
  • Upon entering Read Systeminfo state, the access terminal will issue the ControlChannelMAC.Activate and OverheadMessages.Activate commands.
  • If the access terminal fails to receive the SystemInfo block with TISPSyncAcq seconds of entering the Synchronization state, the access terminal will issue ControlChannelMAC.Deactivate and OverheadMessages.Deactivate commands and will enter the Network Determination State. While attempting to receive the SystemInfo block, the access terminal will discard any other messages received on the Control Channel.
  • When the access terminal receives a SystemInfo block, if the access terminal's revision number is not in the range defined by the MinimumRevision and MaximumRevision fileds (inclusive) specified in the message, the access terminal will issue ControlChannelMAC.Deactivate and Overheadmessages.Deactivate commands and enter the Network Determination State. Otherwise, the access terminal will set the access terminal time to the time specified in the SystemInfo block. The time specified in the block is the time at the beginning of the superframe where the message transmission started. This time is accurate to the twelve least significant digits and is enough for the access terminal to read the ExtendedChannelInfo message (on the Forward Traffic Channel MAC) that contains the complete time. The access terminal also returns a NetworkAcquired indication and enters the Inactive State.
  • FIG. 5A illustrates a flow diagram of the process 500 of processing in Read SystemInfo State, according to an embodiment. At 502, the access terminal issues ControlChannelMAC.Activate command. At 504, the access terminal issues OverheadMessages.Activate command. At 506, it is determined if SystemInfo block is received within TISPSyncAcq seconds. Determining if System SystemInfo block is received within TISPSyncAcq seconds increases access terminal's efficiency such that one or more of aforementioned embodiments need not occur. At 508, if systemInfo block is received within TISPSyncAcq seconds, according to one embodiment, it is further determined if revision number is not in range specified in the SystemInfo block. Determining revision number increases the efficiency of the access terminal such that one or more of aforementioned embodiments need not occur. AT 510, if the revision number is in range, according to one embodiment, time is set to the time in the SystemInfo block. AT 512, a network acquired indication is retuned. At 514, the access terminal enters the Inactive State. At 516, if the SystemInfo Block is not received in TISPSyncAcq seconds or of revision number is not in range, the access terminal issues ControlChannelMAC.deactivate and Overhead Messages.deactivate commands. The access terminal further enters the Network determination State at 518.
  • FIG. 5B illustrates a processor 550 for processing in Read SystemInfo state. The processor referred to may be electronic devices and may comprise one or more processors to carry out the methodologies for processing in Read SystemInfo state. A processor 552 is configured to issue ControlChannelMAC.Activate command. A processor 554 is configured to issue OverheadMessages.Activate command. A processor 556 is configured to determine if SystemInfo block is received within TISPSyncAcq seconds. Determining if System SystemInfo block is received within TISPSyncAcq seconds increases processing efficiency such that one or more of aforementioned embodiments need not occur. According to one embodiment a processor 558 is configured to determine if revision number is not in range specified in the SystemInfo block. Determining revision number increases the processing efficiency such that one or more of aforementioned embodiments need not occur. According to one embodiment a processor 560 is configured to set the time to the time in the SystemInfo block. A processor 562 is configured to return a network acquired indication. A processor 564 is configured to enter Inactive State. A processor 566 is configured to issue ControlChannelMAC.deactivate and Overhead Messages.deactivate commands. A processor 568 is configured to enter the Network determination State. The functionality of the discrete processors 552 and 568 depicted in the figure may be combined into a single processor 570. A memory 572 is also coupled to the processor 570.
  • Furthermore, embodiments may be implemented by hardware, software, firmware, middleware, microcode, or any combination thereof. When implemented in software, firmware, middleware or microcode, the program code or code segments to perform the necessary tasks may be stored in a machine readable medium such as a separate storage(s) not shown. A processor may perform the necessary tasks. A code segment may represent a procedure, a function, a subprogram, a program, a routine, a subroutine, a module, a software package, a class, or any combination of instructions, data structures, or program statements. A code segment may be coupled to another code segment or a hardware circuit by passing and/or receiving information, data, arguments, parameters, or memory contents. Information, arguments, parameters, data, etc. may be passed, forwarded, or transmitted via any suitable means including memory sharing, message passing, token passing, network transmission, etc.
  • Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments. Thus, the description is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A method of processing in Read SystemInfo state in a wireless communication network, the method characterized in that:
issuing a ControlChannelMAC.Activate command;
issuing a OverheadMessages.Activate command; and
determining if a SystemInfoBlock is received within TISPSyncAcq seconds.
2. The method as claimed in claim 1, characterized in that, determining if revision number is not in the range defined by the minimum Revision and Maximum Revision fields in the SystemInfo Block, if the SystemInfo Block is received within TISPSyncAcq seconds.
3. The method as claimed in claim 1, characterized in that:
issuing a ControlChannelMAC.deactivate and an OverheadMessages. deactivate commands; and
entering Network Determination State if the SystemInfo Block is not received within TISPSyncAcq.
4. The method as claimed in claim 2, characterized in that:
setting a time to the time specified in the SystemInfo Block;
returning a network acquired indication; and
entering Inactive state.
5. The method as claimed in claim 2, characterized in that:
issuing a ControlChannelMAC.deactivate and an OverheadMessages. deactivate commands; and
entering Network Determination State,
6. A computer readable medium including instructions thereon, characterized in that:
a first set of instructions for issuing a ControlChannelMAC.Activate command;
a second set of instructions for issuing a OverheadMessages.Activate command; and
a third set of instructions for determining if a SystemInfoBlock is received within TISPSyncAcq seconds.
7. An apparatus operable in a wireless communication system, the apparatus characterized in that:
means for issuing a ControlChannelMAC.Activate command;
means for issuing a OverheadMessages.Activate command; and
means for determining if a SystemInfoBlock is received within seconds.
8. The apparatus as claimed in claim 7, characterized in that, means for determining if revision number is not in the range defined by the minimum Revision and Maximum Revision fields in the SystemInfo Block.
9. The apparatus as claimed in claim 7, characterized in that:
means for issuing a ControlChannelMAC.deactivate and an OverheadMessages. deactivate commands; and
means for entering Network Determination State.
10. The apparatus as claimed in claim 8, characterized in that
means for setting a time to the time specified in the SystemInfo Block;
means for returning a network acquired indication; and
means for entering Inactive state.
US12/091,474 2005-10-27 2006-10-27 Method and apparatus for processing in read systeminfo state in a wireless communication systems Abandoned US20090213789A1 (en)

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PCT/US2006/041921 WO2007050837A1 (en) 2005-10-27 2006-10-27 A method and apparatus for processing in read systeminfo state in a wireless communication systems
US12/091,474 US20090213789A1 (en) 2005-10-27 2006-10-27 Method and apparatus for processing in read systeminfo state in a wireless communication systems

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US12/091,464 Abandoned US20090207790A1 (en) 2005-10-27 2006-10-26 Method and apparatus for settingtuneawaystatus in an open state in wireless communication system
US12/091,594 Abandoned US20090213791A1 (en) 2005-10-27 2006-10-27 Method and apparatus for processing in an idle state by an access terminal in wireless communication systems
US12/091,484 Abandoned US20090180424A1 (en) 2005-10-27 2006-10-27 Method and apparatus for calculating rquickpage in wireless communication systems
US12/091,630 Abandoned US20090219845A1 (en) 2005-10-27 2006-10-27 Method and apparatus for processing in an idle state by an access network in wireless communication systems
US12/091,448 Abandoned US20080293421A1 (en) 2005-10-27 2006-10-27 Method and Apparatus for Processing Procedures in Selected Interlace States in an Open State in Wireless Commnunication System
US12/091,598 Abandoned US20090222698A1 (en) 2005-10-27 2006-10-27 Method and apparatus for entering monitor state by an access terminal in wireless communication systems
US12/091,521 Expired - Fee Related US8477808B2 (en) 2005-10-27 2006-10-27 Method and apparatus of assigning in wireless communication systems
US12/091,576 Abandoned US20090034445A1 (en) 2005-10-27 2006-10-27 Method and apparatus for reducing power consumption in wireless communication systems
US12/091,447 Abandoned US20090207744A1 (en) 2005-10-27 2006-10-27 Method and apparatus for determining tuneaway time in open state in wireless communication system
US12/091,453 Active 2029-11-10 US8744444B2 (en) 2005-10-27 2006-10-27 Method and apparatus for transmitting a pilot report (PilotReport) message in wireless communication systems
US12/091,516 Abandoned US20090201833A1 (en) 2005-10-27 2006-10-27 Method and apparatus for processing a network determination state in wireless communication systems
US12/091,586 Abandoned US20090129325A1 (en) 2005-10-27 2006-10-27 Method and apparatus for calculating the paging cycle offset in wireless communication systems
US12/091,463 Expired - Fee Related US8184574B2 (en) 2005-10-27 2006-10-27 Method and apparatus for transmitting and receiving an accessparameters group message in a wireless communication system
US12/091,435 Active 2029-07-22 US8265066B2 (en) 2005-10-27 2006-10-27 Method and apparatus for reducing power consumption in wireless communication systems
US12/091,460 Abandoned US20090067547A1 (en) 2005-10-27 2006-10-27 Method and apparatus for processing selectdinterplace operation in open state in wireless communication system
US12/091,474 Abandoned US20090213789A1 (en) 2005-10-27 2006-10-27 Method and apparatus for processing in read systeminfo state in a wireless communication systems
US12/091,449 Abandoned US20110173464A1 (en) 2005-10-27 2006-10-27 Method and Apparatus for Processing Monitor State By an Access Network in Wireless Communication Systems
US12/091,470 Abandoned US20090219917A1 (en) 2005-10-27 2006-10-27 Method and apparatus for transmitting and receiving an extendedchannelinfo message in an active state in wireless communication system
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US12/091,465 Abandoned US20090147713A1 (en) 2005-10-27 2006-10-27 Method and apparatus for entering and processing in access state in wireless communication systems
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US12/091,517 Abandoned US20090046640A1 (en) 2005-10-27 2006-10-27 Method and apparatus of transmitting and receiving activesetcomplete in wireless communication systems
US12/091,469 Abandoned US20080310357A1 (en) 2005-10-27 2006-10-27 Method and Apparatus for Processing Tuneaway in Open State in Wireless Communication System
US12/091,651 Abandoned US20090164658A1 (en) 2005-10-27 2006-10-27 Method and apparatus for processing in a connected state by an access terminal and access network in wireless communication systems
US12/091,450 Expired - Fee Related US8107421B2 (en) 2005-10-27 2006-10-27 Method and apparatus for requesting pilotreport in wireless communication systems
US12/091,407 Abandoned US20090046699A1 (en) 2005-10-27 2006-10-27 Method of transmitting and receiving a redirect message in a wireless communication system
US12/091,467 Abandoned US20090207830A1 (en) 2005-10-27 2006-10-27 Method and apparatus for transmitting and receiving slottedmode attribute in wireless communication systems
US12/091,452 Expired - Fee Related US8000407B2 (en) 2005-10-27 2006-10-27 Method and apparatus of transmitting and receiving channel parameter attributes in wireless communication systems
US12/091,436 Abandoned US20090086758A1 (en) 2005-10-27 2006-10-27 Method and apparatus of transmitting and receiving connectionclose message in wireless communication systems
US12/091,456 Abandoned US20090213788A1 (en) 2005-10-27 2006-10-27 Method and apparatus for transmitting and receiving a systeminfo block in an active state in wireless communication system
US12/091,518 Abandoned US20090303890A1 (en) 2005-10-27 2006-10-27 Method and apparatus for command processing in wireless communication systems
US12/091,473 Expired - Fee Related US7933219B2 (en) 2005-10-27 2006-10-27 Method and apparatus for requesting a channel measurement report in wireless communication systems
US12/091,434 Abandoned US20090219866A1 (en) 2005-10-27 2006-10-27 Method and apparatus for transitioning from monitor state in wireless communication systems
US12/091,458 Expired - Fee Related US8089893B2 (en) 2005-10-27 2006-10-27 Method and apparatus for transmitting and receiving a channel measurement reports in wireless communication system
US12/091,445 Expired - Fee Related US8027302B2 (en) 2005-10-27 2006-10-27 Method and apparatus for transmitting and receiving selected interlace acknowledgement messages in wireless communication systems
US12/091,660 Abandoned US20090221305A1 (en) 2005-10-27 2006-10-27 A method and apparatus for processing a quickpage block in wireless communication systems
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US12/091,471 Active 2028-08-15 US8326330B2 (en) 2005-10-27 2006-10-27 Method and apparatus for updating configuration attributes using FastRepage attribute in wireless communication systems
US12/091,455 Abandoned US20090149172A1 (en) 2005-10-27 2006-10-27 Supervising quickchannelinfo block, extendedchannelinfo message and sectorparameters message in wireless communication systems
US12/091,523 Expired - Fee Related US8014749B2 (en) 2005-10-27 2006-10-27 Method and apparatus of transmitting preferred control channel cycle attribute in wireless communication systems
US12/091,485 Expired - Fee Related US8248950B2 (en) 2005-10-27 2006-10-27 Method of transmitting and receiving a redirect message in a wireless communication system
US12/091,451 Abandoned US20090316632A1 (en) 2005-10-27 2006-10-27 Method and apparatus for processing acess related indications by an acess terminal in idle state in wireless communication systems
US12/091,459 Abandoned US20080311908A1 (en) 2005-10-27 2006-10-27 Method and Apparatus for Zonecode-Based Registration in Active State in Wireless Communication System
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US12/091,464 Abandoned US20090207790A1 (en) 2005-10-27 2006-10-26 Method and apparatus for settingtuneawaystatus in an open state in wireless communication system
US12/091,594 Abandoned US20090213791A1 (en) 2005-10-27 2006-10-27 Method and apparatus for processing in an idle state by an access terminal in wireless communication systems
US12/091,484 Abandoned US20090180424A1 (en) 2005-10-27 2006-10-27 Method and apparatus for calculating rquickpage in wireless communication systems
US12/091,630 Abandoned US20090219845A1 (en) 2005-10-27 2006-10-27 Method and apparatus for processing in an idle state by an access network in wireless communication systems
US12/091,448 Abandoned US20080293421A1 (en) 2005-10-27 2006-10-27 Method and Apparatus for Processing Procedures in Selected Interlace States in an Open State in Wireless Commnunication System
US12/091,598 Abandoned US20090222698A1 (en) 2005-10-27 2006-10-27 Method and apparatus for entering monitor state by an access terminal in wireless communication systems
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US12/091,576 Abandoned US20090034445A1 (en) 2005-10-27 2006-10-27 Method and apparatus for reducing power consumption in wireless communication systems
US12/091,447 Abandoned US20090207744A1 (en) 2005-10-27 2006-10-27 Method and apparatus for determining tuneaway time in open state in wireless communication system
US12/091,453 Active 2029-11-10 US8744444B2 (en) 2005-10-27 2006-10-27 Method and apparatus for transmitting a pilot report (PilotReport) message in wireless communication systems
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US12/091,435 Active 2029-07-22 US8265066B2 (en) 2005-10-27 2006-10-27 Method and apparatus for reducing power consumption in wireless communication systems
US12/091,460 Abandoned US20090067547A1 (en) 2005-10-27 2006-10-27 Method and apparatus for processing selectdinterplace operation in open state in wireless communication system

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US12/091,449 Abandoned US20110173464A1 (en) 2005-10-27 2006-10-27 Method and Apparatus for Processing Monitor State By an Access Network in Wireless Communication Systems
US12/091,470 Abandoned US20090219917A1 (en) 2005-10-27 2006-10-27 Method and apparatus for transmitting and receiving an extendedchannelinfo message in an active state in wireless communication system
US12/091,472 Expired - Fee Related US8289897B2 (en) 2005-10-27 2006-10-27 Method and apparatus for processing open state in wireless communication system
US12/091,465 Abandoned US20090147713A1 (en) 2005-10-27 2006-10-27 Method and apparatus for entering and processing in access state in wireless communication systems
US12/091,468 Expired - Fee Related US8078135B2 (en) 2005-10-27 2006-10-27 Method and apparatus for transmitting and receiving a quickchannelinfo block in active state in wireless communication system
US12/091,517 Abandoned US20090046640A1 (en) 2005-10-27 2006-10-27 Method and apparatus of transmitting and receiving activesetcomplete in wireless communication systems
US12/091,469 Abandoned US20080310357A1 (en) 2005-10-27 2006-10-27 Method and Apparatus for Processing Tuneaway in Open State in Wireless Communication System
US12/091,651 Abandoned US20090164658A1 (en) 2005-10-27 2006-10-27 Method and apparatus for processing in a connected state by an access terminal and access network in wireless communication systems
US12/091,450 Expired - Fee Related US8107421B2 (en) 2005-10-27 2006-10-27 Method and apparatus for requesting pilotreport in wireless communication systems
US12/091,407 Abandoned US20090046699A1 (en) 2005-10-27 2006-10-27 Method of transmitting and receiving a redirect message in a wireless communication system
US12/091,467 Abandoned US20090207830A1 (en) 2005-10-27 2006-10-27 Method and apparatus for transmitting and receiving slottedmode attribute in wireless communication systems
US12/091,452 Expired - Fee Related US8000407B2 (en) 2005-10-27 2006-10-27 Method and apparatus of transmitting and receiving channel parameter attributes in wireless communication systems
US12/091,436 Abandoned US20090086758A1 (en) 2005-10-27 2006-10-27 Method and apparatus of transmitting and receiving connectionclose message in wireless communication systems
US12/091,456 Abandoned US20090213788A1 (en) 2005-10-27 2006-10-27 Method and apparatus for transmitting and receiving a systeminfo block in an active state in wireless communication system
US12/091,518 Abandoned US20090303890A1 (en) 2005-10-27 2006-10-27 Method and apparatus for command processing in wireless communication systems
US12/091,473 Expired - Fee Related US7933219B2 (en) 2005-10-27 2006-10-27 Method and apparatus for requesting a channel measurement report in wireless communication systems
US12/091,434 Abandoned US20090219866A1 (en) 2005-10-27 2006-10-27 Method and apparatus for transitioning from monitor state in wireless communication systems
US12/091,458 Expired - Fee Related US8089893B2 (en) 2005-10-27 2006-10-27 Method and apparatus for transmitting and receiving a channel measurement reports in wireless communication system
US12/091,445 Expired - Fee Related US8027302B2 (en) 2005-10-27 2006-10-27 Method and apparatus for transmitting and receiving selected interlace acknowledgement messages in wireless communication systems
US12/091,660 Abandoned US20090221305A1 (en) 2005-10-27 2006-10-27 A method and apparatus for processing a quickpage block in wireless communication systems
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US12/091,471 Active 2028-08-15 US8326330B2 (en) 2005-10-27 2006-10-27 Method and apparatus for updating configuration attributes using FastRepage attribute in wireless communication systems
US12/091,455 Abandoned US20090149172A1 (en) 2005-10-27 2006-10-27 Supervising quickchannelinfo block, extendedchannelinfo message and sectorparameters message in wireless communication systems
US12/091,523 Expired - Fee Related US8014749B2 (en) 2005-10-27 2006-10-27 Method and apparatus of transmitting preferred control channel cycle attribute in wireless communication systems
US12/091,485 Expired - Fee Related US8248950B2 (en) 2005-10-27 2006-10-27 Method of transmitting and receiving a redirect message in a wireless communication system
US12/091,451 Abandoned US20090316632A1 (en) 2005-10-27 2006-10-27 Method and apparatus for processing acess related indications by an acess terminal in idle state in wireless communication systems
US12/091,459 Abandoned US20080311908A1 (en) 2005-10-27 2006-10-27 Method and Apparatus for Zonecode-Based Registration in Active State in Wireless Communication System
US12/091,461 Expired - Fee Related US8457042B2 (en) 2005-10-27 2006-10-27 Method and apparatus for transmitting and receiving a sectorparameters message in an active state in wireless communication system
US12/091,457 Expired - Fee Related US7852793B2 (en) 2005-10-27 2006-10-27 Method and apparatus for transmitting and receiving an initialsetupattribute message in wireless communication systems

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JP (48) JP4691597B2 (en)
KR (53) KR100986946B1 (en)
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