WO2010032812A1 - 移動端末装置及び無線基地局装置 - Google Patents
移動端末装置及び無線基地局装置 Download PDFInfo
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- WO2010032812A1 WO2010032812A1 PCT/JP2009/066341 JP2009066341W WO2010032812A1 WO 2010032812 A1 WO2010032812 A1 WO 2010032812A1 JP 2009066341 W JP2009066341 W JP 2009066341W WO 2010032812 A1 WO2010032812 A1 WO 2010032812A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0037—Inter-user or inter-terminal allocation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
- H04J11/0069—Cell search, i.e. determining cell identity [cell-ID]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
- H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
- H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
- H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
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- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
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- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0058—Allocation criteria
- H04L5/0062—Avoidance of ingress interference, e.g. ham radio channels
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0091—Signaling for the administration of the divided path
- H04L5/0092—Indication of how the channel is divided
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/16—Discovering, processing access restriction or access information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H—ELECTRICITY
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- H04W74/08—Non-scheduled access, e.g. ALOHA
- H04W74/0833—Random access procedures, e.g. with 4-step access
Definitions
- the present invention relates to a mobile terminal apparatus and a radio base station apparatus in a next generation mobile communication system.
- LTE Long Term Evolution
- SC-FDMA Single Carrier Frequency Multiple Access
- the third generation system can achieve a maximum transmission rate of about 2 Mbps on the downlink using generally a fixed bandwidth of 5 MHz.
- a maximum transmission rate of about 300 Mbps on the downlink and about 75 Mbps on the uplink can be realized using a variable band of 1.4 MHz to 20 MHz.
- LTE-A LTE Advanced
- the present invention has been made in view of the above points, and an object of the present invention is to provide a mobile terminal apparatus and a radio base station apparatus corresponding to each mobile communication system when a plurality of mobile communication systems coexist.
- the mobile terminal apparatus of the present invention includes a cell search means for performing a cell search using a synchronization channel signal included in any one of a plurality of downlink component carriers, and an initial downlink including the cell-searched synchronization channel signal.
- Dynamic broadcast channel signal receiving means for receiving dynamic broadcast channel signal including uplink component carrier information to be paired with a component carrier; and uplink center frequency control means for controlling the transmission center frequency of the uplink signal based on the uplink component carrier information;
- a random access channel signal generating means for generating a random access channel signal, an uplink shared channel signal generating means for generating an uplink shared channel signal, and a control signal for receiving a control signal of the initial downlink component carrier Characterized by comprising a receiving means.
- the radio base station apparatus of the present invention includes a dynamic broadcast channel signal generating unit that generates dynamic broadcast channel signal including uplink component carrier information that forms a pair of downlink component carriers, and an initial downlink including a synchronization channel signal used for cell search.
- a shared channel signal receiving means for receiving a shared channel signal including information on a transmission / reception bandwidth of the mobile terminal device in an uplink component carrier that is a pair of component carriers, and allocation information of a downlink component carrier and an uplink component carrier
- a downlink control signal generating means for generating a downlink control signal including the received downlink control signal.
- the mobile terminal apparatus performs cell search using a synchronization channel signal included in any one of a plurality of downlink component carriers, and the radio base station apparatus performs the cell search for the synchronization channel signal.
- a dynamic broadcast channel signal including carrier set information related to the initial downlink component carrier and initial uplink component carrier information that forms a pair of the initial downlink component carrier, and the radio base station apparatus performs random access from the mobile terminal apparatus.
- a response signal of a channel signal is transmitted to the mobile terminal apparatus on the initial downlink component carrier, and the mobile terminal apparatus transmits a shared channel signal including information on transmission / reception bandwidth of the mobile terminal apparatus on the initial uplink component carrier.
- the radio base station apparatus transmits a shared channel signal including downlink component carrier and uplink component carrier allocation information based on transmission / reception bandwidth information of the mobile terminal apparatus. Since transmission is performed to the mobile terminal apparatus and communication is performed between the radio base station apparatus and the mobile terminal apparatus using a downlink component carrier and an uplink component carrier based on the allocation information after random access, a plurality of movements Even when communication systems coexist, it is possible to perform an initial access procedure corresponding to each mobile communication system.
- FIG. 1 is a diagram for explaining a frequency usage state when mobile communication is performed in the downlink.
- the example shown in FIG. 1 includes an LTE-A system that is a first mobile communication system having a relatively wide first system band and an LTE system that is a second mobile communication system having a relatively narrow second system band. This is the frequency usage state when coexisting.
- LTE-A system for example, wireless communication is performed with a variable system bandwidth of 100 MHz or less, and in the LTE system, wireless communication is performed with a variable system bandwidth of 20 MHz or less.
- the system band of the LTE-A system is at least one fundamental frequency region (component carrier: CC) having the system band of the LTE system as a unit. In this way, widening a band by integrating a plurality of fundamental frequency regions is called carrier aggregation.
- component carrier component carrier
- Mobile terminal apparatus having a system band of 20 MHz (base band).
- the frequency band allocated to the downlink and the frequency band allocated to the uplink are asymmetric.
- uplink (UL) and downlink (DL) have an asymmetric bandwidth in one transmission time interval (TTI)
- time division In duplex (TDD) a plurality of uplinks are allocated to the downlink bandwidth, and the uplink (UL) and the downlink (DL) have an asymmetric bandwidth.
- the processing procedure used in the LTE system cannot cope with a system in which the uplink (UL) and the downlink (DL) have an asymmetric bandwidth. For this reason, even a system that can use a widened frequency band can only deal with the fundamental frequency region, and cannot effectively use the widened frequency band.
- the essence of the present invention is that a mobile terminal device performs a cell search using a synchronization channel signal included in any one of a plurality of downlink component carriers, and the radio base station device performs the cell search. Broadcasting a dynamic broadcast channel signal including carrier set information related to an initial downlink component carrier including a synchronization channel signal and initial uplink component carrier information which is a pair of the initial downlink component carrier, and the radio base station apparatus from the mobile terminal apparatus The random access channel signal response signal is transmitted to the mobile terminal apparatus on the initial downlink component carrier, and the mobile terminal apparatus includes information on transmission / reception bandwidth of the mobile terminal apparatus on the initial uplink component carrier.
- Shared channel signal including allocation information of downlink component carrier and uplink component carrier based on transmission / reception bandwidth information of the mobile terminal device To the mobile terminal device, and after random access, by communicating between the radio base station device and the mobile terminal device with a downlink component carrier and an uplink component carrier based on the allocation information, Even when a plurality of mobile communication systems coexist, wireless communication, particularly an initial access procedure, is performed corresponding to each mobile communication system.
- FIG. 3 is a block diagram showing a configuration of the mobile terminal apparatus according to the embodiment of the present invention.
- the mobile terminal apparatus shown in FIG. 3 includes a reception system processing unit and a transmission system processing unit.
- the reception system processing unit separates the downlink reception signal from the downlink reception center frequency control unit 101 that controls the downlink reception center frequency, the downlink reception signal bandwidth extraction unit 102 that is a reception filter that extracts the bandwidth of the downlink reception signal, and Downlink received signal separating section 104, SCH signal receiving section (cell search section) 105 that receives a synchronization channel (SCH) signal, and PBCH signal receiving section that receives a broadcast channel (Physical Broadcast Channel: PBCH) signal 106, an initial downlink CC control signal receiving unit 107 that receives a control signal of an initial component carrier (CC), a downlink control signal receiving unit 108 that receives a downlink control signal, and a downlink shared channel signal that receives a downlink shared channel signal Receiving unit 109.
- the initial downlink CC control signal receiving unit 107 includes a broadcast information signal receiving unit 1071 that receives broadcast information (Dynamic Broadcast Channel: DBCH) signal, a RACH response signal, a control signal (MAC (Media Access Control) / RRC (Radio Resource Control)). ) Signal) and a control signal receiving unit 1072.
- broadcast information Dynamic Broadcast Channel: DBCH
- RACH response signal a control signal (MAC (Media Access Control) / RRC (Radio Resource Control)). ) Signal) and a control signal receiving unit 1072.
- MAC Media Access Control
- RRC Radio Resource Control
- the transmission system processing unit includes an uplink control signal generation unit 110 that generates an uplink control signal, an uplink shared channel signal generation unit 111 that generates an uplink shared channel signal, and a random access channel signal that generates a random access channel (RACH) signal.
- a transmission center frequency control unit 115 is a transmission center frequency control unit 115.
- the mobile terminal apparatus includes a pair band allocation information storage unit 103 that stores allocation information of downlink component carriers and uplink component carriers (pair bands).
- the downlink reception center frequency control unit 101 receives information on the center frequency of the downlink component carrier (initial downlink CC) at the time of cell search in the SCH signal reception unit 105 from the SCH signal reception unit 105, and uses the information on the center frequency. Based on this, the downlink reception center frequency is controlled (moved). Also, the downlink reception center frequency control unit 101 controls (moves) the downlink reception center frequency based on the allocation information of the downlink CC and the uplink CC. This controlled downlink reception center frequency information is sent to the downlink reception signal bandwidth extraction unit 102.
- the downlink reception center frequency control unit 101 receives information on the center frequency of the accessible CC in the PBCH signal from the PBCH signal reception unit 106, and controls (moves) the downlink reception center frequency based on the information on the center frequency. .
- the downlink reception signal bandwidth extraction unit 102 is the initial downlink CC information included in the broadcast channel signal received by the PBCH signal reception unit 106, that is, the initial downlink CC of the information such as the initial downlink CC bandwidth and the number of antennas.
- the bandwidth of the downlink reception signal is extracted based on the bandwidth information.
- the reception signal filtered in this way is sent to the downlink reception signal separation section 104.
- the downlink reception signal bandwidth extraction unit 102 extracts the bandwidth of the downlink reception signal based on the allocation information of the downlink CC and the uplink CC. Specifically, the received signal is filtered by the reception filter set to the bandwidth of the initial downlink CC (or accessible CC) using the downlink reception center frequency.
- the downlink reception signal separation unit 104 separates the downlink reception signal into an SCH signal, a PBCH signal, a downlink control signal (layer 1 / layer 2 control signal), and a downlink shared channel signal. Then, downlink reception signal separation section 104 sends an SCH signal to SCH signal reception section 105, sends a PBCH signal to PBCH signal reception section 106, sends a downlink control signal to downlink control signal reception section 108, and sends a downlink shared channel signal. Output to downlink shared channel signal receiver 109. The downlink shared channel signal output to the downlink shared channel signal receiving unit 109 is sent to the upper layer as downlink received data.
- the downlink reception signal separation unit 104 When receiving the initial downlink CC control signal as the downlink reception signal in the initial access, the downlink reception signal separation unit 104 separates the broadcast information signal (DBCH signal), the RACH response signal, and the control signal (MAC / RRC control signal). . Then, downlink reception signal separation section 104 sends a broadcast information signal (DBCH signal) to broadcast information signal reception section 1071, and outputs a RACH response signal and control signal to RACH response signal and control signal reception section 1072.
- DBCH signal broadcast information signal
- MAC / RRC control signal control signal
- the SCH signal receiving unit 105 performs a cell search using a synchronization channel signal included in any one of a plurality of downlink component carriers. At this time, the frequency block including the synchronization channel signal subjected to the cell search is set as the initial downlink CC. Then, the SCH signal reception unit 105 feeds back the information of the center frequency of the initial downlink CC to the downlink reception center frequency control unit 101.
- the PBCH signal receiving unit 106 receives a broadcast channel signal broadcast from the radio base station apparatus.
- the PBCH signal reception unit 106 extracts the initial downlink CC information included in the broadcast channel signal, that is, the information of the initial downlink CC bandwidth from the information such as the initial downlink CC bandwidth and the number of antennas, and receives the downlink reception The signal is output to the signal bandwidth extraction unit 102.
- the PBCH signal includes CC (accessible CC) information (center frequency, etc.) that can be received by the DBCH
- the PBCH signal receiving unit 106 extracts information on accessible CC from the PBCH signal, Output to the downlink reception center frequency control unit 101.
- the broadcast information signal receiving unit 1071 receives a broadcast channel signal (broadcast information signal (DBCH)) including uplink CC information (bandwidth and intermediate frequency) that is a pair of initial downlink CCs including a cell-searched synchronization channel signal.
- DBCH broadcast information signal
- the broadcast information signal receiving unit 1071 feeds back the uplink CC information to the uplink transmission signal bandwidth limiting unit 114 and the uplink transmission center frequency control unit 115. In this way, uplink CC information is fed back to the uplink transmission signal bandwidth limiting unit 114 and the uplink transmission center frequency control unit 115, so that uplink transmission on the uplink CC paired with the initial downlink CC can be performed.
- DBCH broadcast information signal
- the broadcast channel signal includes carrier set information related to the initial downlink CC (total bandwidth of aggregated CCs or the number of aggregated CCs, and Center frequency), a random access channel parameter specific to the mobile terminal apparatus corresponding to the LTE-A system, and a center frequency of the CC to which paging information specific to the mobile terminal apparatus corresponding to LTE-A is transmitted.
- broadcast information signal receiving section 1071 feeds back the center frequency of the CC to which carrier set information and paging information are transmitted to uplink transmission signal bandwidth limiting section 114 and uplink transmission center frequency control section 115, and LTE- A random access channel parameter specific to the mobile terminal apparatus corresponding to the A system is output to the RACH signal generation unit 112.
- Broadcast information signal receiving section 1071 feeds carrier set information back to uplink transmission signal bandwidth limiting section 114 and uplink transmission center frequency control section 115, so that an uplink signal can be transmitted in a wide band.
- broadcast information signal receiving section 1071 outputs a random access channel parameter specific to the mobile terminal apparatus to RACH signal generating section 112, so that the radio base station apparatus is notified by the RACH signal whether the terminal is an LTE-A compatible terminal. It becomes possible. Also, by feeding back the center frequency of the CC to which the paging information is transmitted to the uplink transmission signal bandwidth limiting unit 114 and the uplink transmission center frequency control unit 115, it becomes possible to receive the paging information in the idle mode.
- the RACH response / control signal receiving unit 1072 receives the RACH response signal and the control signal (MAC / RRC signal). Since the control signal (MAC / RRC signal) includes downlink CC and uplink CC (pair band) allocation information, this pair band allocation information is output to the pair band allocation information storage unit 103.
- the pair band allocation information storage unit 103 stores this pair band allocation information.
- the pair band allocation information is used by the downlink reception center frequency control unit 101, the downlink reception signal bandwidth extraction unit 102, the uplink transmission signal bandwidth limit unit 114, and the uplink transmission center frequency control unit 115 after the pair band allocation.
- the uplink shared channel signal generation unit 111 generates an uplink shared channel signal using uplink transmission data from an upper layer.
- the uplink transmission data from the higher layer includes transmission / reception bandwidth information (capability information) of the device itself. In this way, by transmitting information on the transmission / reception bandwidth of the own device to the radio base station device using an uplink transmission signal, it is possible to efficiently allocate uplink and downlink pair bands in the radio base station device.
- the RACH signal generation unit 112 generates a RACH signal (preamble and message).
- This RACH signal may include identification information (unique signal sequence) of the LTE-A system unique to the mobile terminal apparatus corresponding to the LTE-A system. As a result, it is possible to notify the radio base station apparatus whether or not it is an LTE-A compatible terminal using a RACH signal.
- the uplink transmission signal multiplexing unit 113 includes an uplink control signal generated by the uplink control signal generation unit 110, an uplink shared channel signal generated by the uplink shared channel signal generation unit 111, and a RACH signal generated by the RACH signal generation unit 112. Is multiplexed. Uplink transmission signal multiplexing section 113 outputs the multiplexed transmission signal to uplink transmission signal bandwidth limiting section 114.
- the uplink transmission signal bandwidth limiting unit 114 limits the uplink transmission signal bandwidth limitation based on the uplink CC information (bandwidth and intermediate frequency) from the broadcast information signal receiving unit 1071.
- the transmission signal filtered in this way is sent to the uplink transmission center frequency control unit 115.
- the uplink transmission signal bandwidth limiting unit 114 limits the bandwidth of the uplink transmission signal based on the allocation information of the downlink CC and the uplink CC. Specifically, the transmission signal is filtered by the transmission filter set to the bandwidth of the uplink CC using the uplink transmission center frequency.
- the uplink transmission center frequency control unit 115 controls (moves) the uplink transmission center frequency based on the uplink CC information (bandwidth and intermediate frequency) from the broadcast information signal reception unit 1071. Further, the uplink transmission center frequency control unit 115 controls (moves) the uplink transmission center frequency based on the allocation information of the downlink CC and the uplink CC.
- FIG. 4 is a block diagram showing a configuration of the radio base station apparatus according to the embodiment of the present invention.
- the radio base station apparatus shown in FIG. 4 includes a transmission system processing unit and a reception system processing unit.
- the transmission system processing unit includes a downlink CC control signal generation unit 201 that generates a downlink component carrier (downlink CC) control signal, a downlink control signal generation unit 206 that generates a downlink control signal (layer 1 / layer 2 control signal), A downlink shared channel signal generation unit 207 that generates a downlink shared channel signal, a downlink CC signal multiplexing unit 202 that multiplexes downlink CC signals (downlink CC control signal, downlink control signal, downlink shared channel signal) for each downlink CC, and A plurality of CC signal multiplexing sections 203 that multiplex each of the multiplexed downlink CC signals.
- a downlink CC control signal generation unit 201 that generates a downlink component carrier (downlink CC) control signal
- the downlink CC control signal generation unit 201 generates, for each CC, an SCH signal generation unit 2011 that generates an SCH signal (synchronization channel signal), a PBCH signal generation unit 2012 that generates a PBCH signal (broadcast channel signal), and broadcast information ( A broadcast information signal generation unit 2013 that generates a (DBCH) signal, and a RACH response signal and a control signal generation unit 2014 that generate a RACH response signal and a control signal (MAC / RRC control signal).
- an SCH signal generation unit 2011 that generates an SCH signal (synchronization channel signal)
- a PBCH signal generation unit 2012 that generates a PBCH signal (broadcast channel signal)
- broadcast information A broadcast information signal generation unit 2013 that generates a (DBCH) signal
- a RACH response signal and a control signal generation unit 2014 that generate a RACH response signal and a control signal (MAC / RRC control signal).
- the reception system processing unit includes a multiple CC signal separation unit 212 that separates uplink reception signals into multiple CC signals, an uplink CC signal separation unit 211 that separates signals in individual uplink CCs, and an uplink control signal (layer 1 / layer 2 control signal), an uplink shared channel signal receiver 209 that receives an uplink shared channel signal, and an uplink CC RACH receiver 210 that receives a RACH signal of each uplink CC.
- a multiple CC signal separation unit 212 that separates uplink reception signals into multiple CC signals
- an uplink CC signal separation unit 211 that separates signals in individual uplink CCs
- an uplink control signal layer 1 / layer 2 control signal
- an uplink shared channel signal receiver 209 that receives an uplink shared channel signal
- an uplink CC RACH receiver 210 that receives a RACH signal of each uplink CC.
- the radio base station apparatus includes a pair band allocation control unit 205 that controls allocation of downlink component carriers and uplink component carriers (pair bands) from the capability information of the mobile terminal apparatus, and includes pair band allocation information.
- the SCH signal generation unit 2011 generates a synchronization channel signal for cell search in the mobile terminal apparatus.
- the generated SCH signal is multiplexed with other signals in downlink CC signal multiplexing section 202.
- the PBCH signal generation unit 2012 generates a broadcast channel signal including information such as CC bandwidth, the number of antennas, and CCs that can be received by the DBCH (accessible CCs).
- the generated PBCH signal is multiplexed with other signals in downlink CC signal multiplexing section 202.
- the broadcast information signal generation unit 2013 generates uplink CC information (bandwidth and center frequency of the uplink CC to be paired) as a broadcast information signal (broadcast channel signal) as a downlink CC (initial downlink CC) pair. Also, the broadcast information signal generation unit 2013 performs carrier set information on the initial downlink CC (total bandwidth of aggregated CCs or the number of aggregated CCs and the center frequency thereof), movement corresponding to LTE-A. The center frequency of the CC to which the UE device specific RACH parameter and / or paging information specific to the mobile terminal device corresponding to LTE-A is transmitted is generated as a broadcast information signal (broadcast channel signal). The generated broadcast information signal is multiplexed with other signals by downlink CC signal multiplexing section 202.
- the RACH response signal / control signal generation unit 2014 generates a RACH response signal that is a response signal of the RACH signal (preamble) and a control signal (MAC / RRC control signal).
- the control signal includes pair band allocation information of the downlink CC and the uplink CC sent from the shared channel scheduler 204.
- the generated RACH response signal and control signal are multiplexed with other signals in downlink CC signal multiplexing section 202.
- the downlink control signal generation unit 206 generates a downlink control signal based on the schedule determined by the shared channel scheduler 204.
- the generated downlink control signal is multiplexed with other signals by the downlink CC signal multiplexing section 202.
- the downlink shared channel signal generation unit 207 Based on the schedule determined by the shared channel scheduler 204, the downlink shared channel signal generation unit 207 generates a downlink shared channel signal using downlink transmission data from an upper layer.
- the generated downlink shared channel signal is multiplexed with other signals by downlink CC signal multiplexing section 202.
- the uplink control signal reception unit 208 receives the uplink control signal separated by the uplink CC signal separation unit 211 based on the schedule determined by the shared channel scheduler 204.
- the uplink shared channel signal reception unit 209 receives the uplink shared channel signal separated by the uplink CC signal separation unit 211 based on the schedule determined by the shared channel scheduler 204.
- This uplink shared channel signal includes information on the transmission / reception bandwidth of the mobile terminal apparatus in the uplink CC that is a pair of the initial downlink CC including the synchronization channel signal used for the cell search.
- uplink transmission data is sent to an upper layer, and the transmission / reception bandwidth information (UE capability information) is sent to the pair band allocation control unit 205.
- the pair band allocation control unit 205 generates uplink band and downlink CC band allocation information based on the UE capability information, and sends the pair band allocation information to the shared channel scheduler 204. For example, if the transmission / reception bandwidth of a mobile terminal apparatus that allocates a pair band with UE capability information is 40 MHz, the uplink CC is set to 40 MHz, the downlink CC is determined to be a predetermined bandwidth (for example, 60 MHz), A pair band of the downlink CC is determined (pair band assignment).
- the shared channel scheduler 204 schedules transmission / reception of the vertical control signal and the vertical shared channel. Further, the shared channel scheduler 204 sends the pair band allocation information to the RACH response signal / control signal generation unit 2014.
- the uplink CC RACH signal reception unit 210 receives the RACH signal of each CC separated by the uplink CC signal separation unit 211. This RACH signal includes identification information of the LTE-A system.
- the uplink CC RACH signal reception unit 210 sends the uplink CC and RACH signal reception sequence that received the RACH signal together with the RACH parameter to the shared channel scheduler 204.
- the shared channel scheduler 204 identifies the initial downlink CC and schedules transmission / reception of the upper / lower shared channel signal and the upper / lower control signal using information on the uplink CC and the RACH signal reception sequence that received the RACH signal.
- FIG. 5 is a diagram for explaining an initial access procedure according to the present invention.
- the SCH signal receiving section 105 performs cell search using the SCH signal included in any one of the plurality of downlink CCs (ST11).
- the CC to be connected by cell search is defined as the initial downlink CC.
- downlink CC (DCC) # 2 is an initial downlink CC.
- the radio base station apparatus Since the radio base station apparatus generates a PBCH signal including initial downlink CC information (bandwidth, number of antennas, etc.) by the PBCH signal generation unit 2012 and transmits this PBCH signal, the mobile terminal apparatus transmits the PBCH signal. A signal is received (ST12). Also, the radio base station apparatus generates a broadcast information signal (DBCH signal) including uplink CC information (bandwidth, center frequency) paired with the initial downlink CC in the broadcast information signal generation unit 2013, and this broadcast information signal Is transmitted, the mobile terminal apparatus receives the broadcast information signal (ST12).
- DBCH signal broadcast information signal
- the uplink CC that forms a pair of DCC # 2 is UCC # 1.
- the mobile terminal apparatus can extract the bandwidth of the downlink reception signal by the downlink reception signal bandwidth extraction unit 102 using the information (bandwidth, number of antennas) of the initial downlink CC of the received PBCH signal.
- the downlink reception center frequency is controlled by the downlink reception center frequency control unit 101.
- the mobile terminal apparatus uses the uplink CC information (bandwidth, center frequency) paired with the initial downlink CC of the received broadcast information signal, and the uplink transmission signal bandwidth limiter 114 uses the uplink CC signal bandwidth.
- the uplink transmission center frequency control unit 115 controls the uplink transmission center frequency.
- a pair band of the initial downlink CC (DCC # 2) and the uplink CC (UCC # 1) is determined (LTE pair band).
- the initial pair band search is completed.
- DBCH is not transmitted on all downlink CCs.
- the UE cannot receive the downlink CC that transmits the DBCH, the above-described pair band cannot be determined.
- information on CCs that can receive DBCH is broadcast on PBCH, and a pair band is determined based on the information.
- the SCH signal receiving section 105 performs cell search using the SCH signal included in any one of the plurality of downlink CCs.
- the CC to be connected by cell search is set as the initial downlink CC.
- downlink CC (DCC) # 4 is an initial downlink CC.
- the radio base station apparatus generates a PBCH signal including information on the initial downlink CC (bandwidth, number of antennas, CC that can receive DBCH (accessible CC), etc.) in the PBCH signal generation unit 2012, and transmits this PBCH signal. Therefore, the mobile terminal apparatus receives the PBCH signal (ST21).
- downlink CC (DCC) # 2 is an accessible CC.
- the mobile terminal apparatus moves the center frequency to the accessible CC based on the CC information broadcast on the PBCH (ST22).
- the mobile terminal apparatus receives the DBCH signal of the accessible CC (ST23), and uses the uplink CC information (bandwidth and center frequency) paired with the initial downlink CC to use the uplink transmission signal bandwidth limiter.
- the bandwidth of the upstream transmission signal is limited, and the upstream transmission center frequency control unit 115 controls the upstream transmission center frequency.
- a pair band of the accessible downlink CC (DCC # 2) and the uplink CC (UCC # 1) is determined (LTE pair band).
- LTE pair band LTE pair band
- the uplink CC may be set freely.
- the initial downlink CC (DCC # 2, DCC # 3) is assigned a pair band to UCC # 1 as an uplink CC
- the initial downlink CC (DCC # 4) is assigned a pair band to UCC # 2 as an uplink CC.
- the uplink CC may be limited and set as shown in FIG.
- the initial downlink CCs (DCC # 1, DCC # 2, DCC # 3) are all assigned to UCC # 1 as a pair band as uplink CCs.
- the radio base station apparatus generates a broadcast information signal (DBCH signal) including a RACH parameter with which the broadcast information signal generation unit 2013 can identify whether the terminal is an LTE-A terminal, and transmits this broadcast information signal. Therefore, the mobile terminal apparatus receives the broadcast information signal.
- the mobile terminal apparatus generates a RACH signal based on the received RACH parameter in RACH signal generation section 112, and transmits the RACH signal to the radio base station apparatus using uplink CC (UCC # 1) (ST13). ).
- the radio base station apparatus When the radio base station apparatus receives the RACH signal in the uplink CC RACH signal receiving unit (herein, the UCH # 1 RACH signal receiving unit) 210, the radio base station apparatus generates a RACH response signal and the control signal generation unit 2014 generates the RACH response signal.
- a response signal is transmitted to the mobile terminal apparatus by the initial downlink CC (DCC # 2).
- the mobile terminal apparatus After receiving the RACH response signal, the mobile terminal apparatus generates an uplink shared channel signal by the uplink shared channel signal generation unit 111, and transmits the uplink shared channel signal by PUSCH (Physical Uplink Shared Channel) of the uplink CC (UCC # 1). Transmit to the radio base station apparatus.
- the uplink shared channel includes information on the transmission / reception bandwidth of the own device (UE capability information), and this UE capability information is notified to the radio base station device (ST13).
- the mobile terminal apparatus generates an uplink shared channel signal including UE capability information (information on transmission / reception bandwidth of the own apparatus) by the uplink shared channel signal generation unit 111, and converts the uplink shared channel signal into an uplink CC (UCC #). 1), it transmits to the radio base station apparatus (ST13).
- the radio base station apparatus when the uplink shared channel signal reception unit 209 receives the uplink shared channel signal, UE capability information is sent to the pair band allocation control unit 205.
- the pair band allocation information control unit 205 allocates the upper and lower CC pair bands based on the UE capability (the bandwidth (40 MHz) for two CCs here).
- the bandwidth (40 MHz) for two CCs here.
- the pair band allocation control unit 205 sends the pair band allocation information to the shared channel scheduler 204.
- the shared channel scheduler 204 schedules the up / down control signal and the up / down shared channel signal using the pair band allocation information.
- the radio base station apparatus generates a control signal (MAC / RRC control signal) by the RACH response signal and control signal generation unit 2014, and the control signal by PDSCH (Physical Downlink Shared Channel) of this downlink CC (DCC # 2) Is transmitted to the mobile terminal device.
- the control signal (MAC / RRC control signal) includes pair band allocation information, and this pair band allocation information is notified to the mobile terminal apparatus (ST14). Thus far, the processing in the initial pair band is completed.
- RACH response signals and control signals may be transmitted in parallel from all the downlink CCs that are paired with CC (UCC # 1).
- the initial downlink CC is preliminarily set in the RACH signal reception sequence. It may be set so that it can be identified, and the shared channel scheduler 204 may identify the initial downlink CC with the RACH signal reception sequence, and transmit the RACH response signal and control signal with the identified initial downlink CC.
- the pair band allocation information is sent to the pair band allocation information storage unit 103 and stored therein.
- This pair band allocation information is sent to the downlink reception signal bandwidth extraction unit 102, the downlink reception center frequency control unit 101, the uplink transmission signal bandwidth limiter 114, and the uplink transmission center frequency control unit 115, and is assigned by each processing unit.
- the frequency is adjusted (moved) based on the pair band (ST15).
- the downlink reception center frequency control unit 101 adjusts to the center frequency of the bandwidth (aggregated CCs) of the downlink CCs (DCC # 1, DCC # 2, DCC # 3) to obtain the downlink reception signal band.
- the width extraction unit 102 extracts a downlink reception signal with a bandwidth of downlink CCs (DCC # 1, DCC # 2, DCC # 3).
- the uplink transmission center frequency control unit 115 adjusts to the center frequency of the bandwidth (aggregated CCs) of the uplink CCs (UCC # 1, UCC # 2), and the uplink transmission signal bandwidth limiting unit 114
- the uplink transmission signal is limited to the bandwidth of CCs (UCC # 1, UCC # 2).
- the mobile terminal apparatus communicates with the radio base station apparatus using the allocated wide frequency band. Thereafter, the mobile terminal apparatus receives downlink control information (layer 1 / layer 2 control signal), collates the user ID, and decodes radio resource allocation information corresponding to the user ID (blind decoding) (ST16). Thereafter, the mobile terminal device transmits and receives the shared data channel.
- downlink control information layer 1 / layer 2 control signal
- collates the user ID collates the user ID
- radio resource allocation information corresponding to the user ID blind decoding
- a pair band (DCC # 2-UCC # 1) is determined in the same manner as in the LTE system, and UE capability information and pairing are performed using the pair band.
- the band allocation information is transmitted and received to determine the pair bands (DCC # 1, DCC # 2, DCC # 3-UCC # 1, UCC # 2) allocated in a wide band. Therefore, when a plurality of mobile communication systems (LTE system and LTE-A system) coexist, initial access can be made corresponding to each mobile communication system.
- the present invention is not limited to the embodiment described above, and can be implemented with various modifications.
- the allocation of component carriers, the number of processing units, the processing procedure, the number of component carriers, and the number of sets of component carriers in the above description can be changed as appropriate. is there. Other modifications can be made without departing from the scope of the present invention.
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Abstract
Description
まず、移動端末装置において、複数の下りCCのうちいずれかの下りCCに含まれるSCH信号を用いてSCH信号受信部105でセルサーチする。このとき、セルサーチして接続するCCを初期下りCCとする。ここでは、図7において、下りCC(DCC)#4を初期下りCCとする。
Claims (19)
- 複数の下りコンポーネントキャリアのうちのいずれかの下りコンポーネントキャリアに含まれる同期チャネル信号を用いてセルサーチするセルサーチ手段と、前記セルサーチした同期チャネル信号を含む初期下りコンポーネントキャリアの対となる上りコンポーネントキャリア情報を含むダイナミック報知チャネル信号を受信するダイナミック報知チャネル信号受信手段と、前記上りコンポーネントキャリア情報に基づいて上り信号の送信中心周波数を制御する上り中心周波数制御手段と、ランダムアクセスチャネル信号を生成するランダムアクセスチャネル信号生成手段と、上り共有チャネル信号を生成する上り共有チャネル信号生成手段と、前記初期下りコンポーネントキャリアの制御信号を受信する制御信号受信手段と、を具備することを特徴とする移動端末装置。
- 前記ダイナミック報知チャネル信号が、前記初期下りコンポーネントキャリアに関するキャリア集合情報、相対的に広い第1システム帯域を持つ第1移動通信システムに対応する移動端末装置固有のランダムアクセスチャネルパラメータ、及び相対的に広い第1システム帯域を持つ第1移動通信システムに対応する移動端末装置固有のページング情報が送信されるコンポーネントキャリアの中心周波数からなる群より選ばれた少なくとも一つを含むことを特徴とする請求項1記載の移動端末装置。
- 前記ランダムアクセスチャネル信号生成手段は、前記ランダムアクセスチャネルパラメータを含むランダムアクセスチャネル信号を生成することを特徴とする請求項2記載の移動端末装置。
- 前記共有チャネル信号生成手段は、送受信帯域幅の情報を含む共有チャネル信号を生成することを特徴とする請求項1から請求項3のいずれかに記載の移動端末装置。
- 前記制御信号受信手段は、下りリンクのコンポーネントキャリアと上りリンクのコンポーネントキャリアの割り当て情報を含む制御信号を受信することを特徴とする請求項1から請求項4のいずれかに記載の移動端末装置。
- ランダムアクセス後に、前記割り当て情報に基づく下りリンクのコンポーネントキャリアと上りリンクのコンポーネントキャリアとで通信することを特徴とする請求項5記載の移動端末装置。
- ダイナミック報知チャネル信号を受信可能なアクセス可能コンポーネントキャリアの情報を含む物理報知チャネル信号を受信する物理報知チャネル信号受信手段と、前記アクセス可能コンポーネントキャリアの情報に基づいて下り信号の受信中心周波数を制御する受信中心周波数制御手段と、を具備することを特徴とする請求項1から請求項6のいずれかに記載の移動端末装置。
- 下りコンポーネントキャリアの対となる上りコンポーネントキャリア情報を含むダイナミック報知チャネル信号を生成するダイナミック報知チャネル信号生成手段と、セルサーチに使用された同期チャネル信号を含む初期下りコンポーネントキャリアの対となる上りコンポーネントキャリアにおける、移動端末装置の送受信帯域幅の情報を含む共有チャネル信号を受信する共有チャネル信号受信手段と、下りリンクのコンポーネントキャリアと上りリンクのコンポーネントキャリアの割り当て情報を含む下り制御信号を生成する下り制御信号生成手段と、を具備することを特徴とする無線基地局装置。
- 前記ダイナミック報知チャネル信号が、前記初期下りコンポーネントキャリアに関するキャリア集合情報、相対的に広い第1システム帯域を持つ第1移動通信システムに対応する移動端末装置固有のランダムアクセスチャネルパラメータ、及び相対的に広い第1システム帯域を持つ第1移動通信システムに対応する移動端末装置固有のページング情報が送信されるコンポーネントキャリアの中心周波数からなる群より選ばれた少なくとも一つを含むことを特徴とする請求項8記載の無線基地局装置。
- 前記上りコンポーネントキャリアにおいて前記ランダムアクセスチャネルパラメータを含むランダムアクセスチャネル信号を受信するランダムアクセスチャネル信号受信手段を具備することを特徴とする請求項8又は請求項9記載の無線基地局装置。
- 前記上りコンポーネントキャリアの対となるすべての下りコンポーネントキャリアでランダムアクセスチャネル信号の応答信号や下り制御信号をパラレルに送信することを特徴とする請求項8から請求項10のいずれかに記載の無線基地局装置。
- 前記ランダムアクセスチャネル信号を用いて前記初期下りコンポーネントキャリアを同定し、前記初期下りコンポーネントキャリアでランダムアクセスチャネル信号の応答信号や下り制御信号を送信することを特徴とする請求項8から請求項10のいずれかに記載の無線基地局装置。
- ランダムアクセス後に、前記割り当て情報に基づく下りリンクのコンポーネントキャリアと上りリンクのコンポーネントキャリアとで通信することを特徴とする請求項8から請求項12のいずれかに記載の無線基地局装置。
- 前記ダイナミック報知チャネル信号を受信可能なアクセス可能コンポーネントキャリアの情報を含む物理報知チャネル信号を生成する物理報知チャネル信号生成手段を具備することを特徴とする請求項8から請求項13のいずれかに記載の無線基地局装置。
- 移動端末装置において、複数の下りコンポーネントキャリアのうちのいずれかの下りコンポーネントキャリアに含まれる同期チャネル信号を用いてセルサーチする工程と、無線基地局装置が、前記セルサーチした同期チャネル信号を含む初期下りコンポーネントキャリアの対となる上りコンポーネントキャリア情報を含むダイナミック報知チャネル信号を報知する工程と、前記無線基地局装置が、前記移動端末装置からのランダムアクセスチャネル信号の応答信号を前記初期下りコンポーネントキャリアで前記移動端末装置に送信する工程と、前記移動端末装置が、前記上りコンポーネントキャリアで前記移動端末装置の送受信帯域幅の情報を含む共有チャネル信号を前記無線基地局装置に送信する工程と、前記無線基地局装置が、前記移動端末装置の送受信帯域幅の情報に基づいて下りリンクのコンポーネントキャリアと上りリンクのコンポーネントキャリアの割り当て情報を含む制御信号を前記移動端末装置に送信する工程と、ランダムアクセス後に、前記割り当て情報に基づく下りリンクのコンポーネントキャリアと上りリンクのコンポーネントキャリアとで前記無線基地局装置と前記移動端末装置との間で通信する工程と、を具備することを特徴とする移動通信システム。
- 前記ダイナミック報知チャネル信号が、前記初期下りコンポーネントキャリアに関するキャリア集合情報、相対的に広い第1システム帯域を持つ第1移動通信システムに対応する移動端末装置固有のランダムアクセスチャネルパラメータ、及び相対的に広い第1システム帯域を持つ第1移動通信システムに対応する移動端末装置固有のページング情報が送信されるコンポーネントキャリアの中心周波数からなる群より選ばれた少なくとも一つを含むことを特徴とする請求項15記載の移動通信システム。
- 前記ランダムアクセスチャネル信号が前記ランダムアクセスチャネルパラメータを含むことを特徴とする請求項16記載の移動通信システム。
- 前記移動端末装置が、前記上りコンポーネントキャリア情報に基づいて上り信号の送信中心周波数を制御することを特徴とする請求項15から請求項17のいずれかに記載の移動通信システム。
- 前記無線基地局装置が、前記ダイナミック報知チャネル信号を受信可能なアクセス可能コンポーネントキャリアの情報を含む物理報知チャネル信号を送信し、前記移動端末装置において、前記アクセス可能コンポーネントキャリアの情報に基づいて下り信号の受信中心周波数を制御することを特徴とする請求項15から請求項18のいずれかに記載の移動通信システム。
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BRPI0919344A BRPI0919344A2 (pt) | 2008-09-22 | 2009-09-18 | aparelho de terminal móvel e aparelho de estação rádio base. |
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US13/120,075 US8971286B2 (en) | 2008-09-22 | 2009-09-18 | Mobile terminal apparatus and radio base station apparatus for use in multiple mobile communication systems |
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US8995371B2 (en) | 2010-03-29 | 2015-03-31 | Sharp Kabushiki Kaisha | Wireless communication system, mobile station apparatus, base station apparatus, random access method, and integrated circuit |
US9549418B2 (en) | 2010-03-29 | 2017-01-17 | Sharp Kabushiki Kaisha | Wireless communication system, mobile station apparatus, base station apparatus, random access method and integrated circuit |
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CN102300158A (zh) * | 2010-06-28 | 2011-12-28 | ***通信集团公司 | 时分双工***中获知载波信息及载波信息指示方法和设备 |
WO2012000415A1 (zh) * | 2010-06-28 | 2012-01-05 | ***通信集团公司 | 获知载波信息及载波信息指示方法和设备 |
US8964589B2 (en) | 2010-06-28 | 2015-02-24 | China Mobile Communications Corporation | Method and device for obtaining carrier information and carrier information indication |
CN102300158B (zh) * | 2010-06-28 | 2015-03-11 | ***通信集团公司 | 时分双工***中获知载波信息及载波信息指示方法和设备 |
CN102065530A (zh) * | 2011-01-07 | 2011-05-18 | 中兴通讯股份有限公司 | 服务小区的确定方法、基站和用户设备 |
CN102625260A (zh) * | 2011-01-31 | 2012-08-01 | 中兴通讯股份有限公司 | 一种终端工作模式的配置方法及*** |
WO2012103765A1 (zh) * | 2011-01-31 | 2012-08-09 | 中兴通讯股份有限公司 | 一种终端工作模式的配置方法、***以及基站 |
JP2014042297A (ja) * | 2013-10-02 | 2014-03-06 | Sharp Corp | 無線通信システム、移動局装置、ランダムアクセス方法及び集積回路 |
Also Published As
Publication number | Publication date |
---|---|
KR101549616B1 (ko) | 2015-09-11 |
US20110249657A1 (en) | 2011-10-13 |
CN103595517B (zh) | 2017-01-11 |
US8971286B2 (en) | 2015-03-03 |
MX2011002973A (es) | 2011-04-11 |
AU2009293698B2 (en) | 2015-04-16 |
KR20110076880A (ko) | 2011-07-06 |
RU2549125C2 (ru) | 2015-04-20 |
EP2330851A1 (en) | 2011-06-08 |
RU2504122C2 (ru) | 2014-01-10 |
EP2330851B1 (en) | 2016-04-27 |
EP2330851A4 (en) | 2015-04-01 |
AU2009293698A1 (en) | 2010-03-25 |
HUE027559T2 (en) | 2016-10-28 |
CA2737883A1 (en) | 2010-03-25 |
BRPI0919344A2 (pt) | 2015-12-29 |
CN103595517A (zh) | 2014-02-19 |
RU2013139695A (ru) | 2015-03-10 |
JP2010098716A (ja) | 2010-04-30 |
JP5145294B2 (ja) | 2013-02-13 |
CN102160427A (zh) | 2011-08-17 |
RU2011114378A (ru) | 2012-10-27 |
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