Source: https://patents.google.com/patent/JP6063027B2/en
Timestamp: 2020-05-31 11:49:49
Document Index: 377198449

Matched Legal Cases: ['art 102', 'art 103', 'art 104', 'art 105', 'art 106', 'art 107', 'art, 202', 'art, 203', 'art, 204', 'art, 205', 'art, 206', 'art, 207']

JP6063027B2 - Terminal apparatus, base station apparatus, method executed by terminal apparatus, and method executed by base station apparatus - Google Patents
Terminal apparatus, base station apparatus, method executed by terminal apparatus, and method executed by base station apparatus Download PDF
JP6063027B2
JP6063027B2 JP2015228112A JP2015228112A JP6063027B2 JP 6063027 B2 JP6063027 B2 JP 6063027B2 JP 2015228112 A JP2015228112 A JP 2015228112A JP 2015228112 A JP2015228112 A JP 2015228112A JP 6063027 B2 JP6063027 B2 JP 6063027B2
JP2015228112A
JP2016028540A (en
2008-10-22 Priority to JP2008272048 priority
2015-11-20 Application filed by シャープ株式会社 filed Critical シャープ株式会社
2015-11-20 Priority to JP2015228112A priority patent/JP6063027B2/en
2016-02-25 Publication of JP2016028540A publication Critical patent/JP2016028540A/en
2017-01-18 Publication of JP6063027B2 publication Critical patent/JP6063027B2/en
2019-06-25 First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=42119215&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=JP6063027(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
239000000969 carrier Substances 0 claims description 261
The present invention relates to a mobile station apparatus, a base station apparatus, a mobile communication system, a communication method for a mobile station apparatus, a communication method for a base station apparatus, and a processing unit, and more specifically, a mobile station apparatus in which a plurality of component carriers exist. , A base station apparatus, a mobile communication system, a communication method for a mobile station apparatus, a communication method for a base station apparatus, and a processing unit.
3GPP (3 rd Generation Partnership Project: Third Generation Partnership Project) is, W-CDMA (Wideband-Code Division Multiple Access: broadband - Code Division Multiple Access) and GSM (registered trademark): the (Global System for Mobile Communications Jiesuemu) This project examines and creates specifications for mobile phone systems based on the developed network.
FIG. 12 is a diagram showing a channel configuration used in a conventional wireless communication system. This channel configuration is used in a wireless communication system such as EUTRA (see Non-Patent Document 1). The wireless communication system illustrated in FIG. 12 includes a base station device 100 and mobile station devices 200a, 200b, and 200c. R01 indicates a communicable range of the base station apparatus 100, and the base station apparatus 100 communicates with a mobile station apparatus existing within the range R01.
LTE-A follows the basic system of EUTRA. Further, in LTE-A, the frequency band used in a general system is continuous, whereas a plurality of continuous / discontinuous frequency bands (hereinafter referred to as carrier component or component carrier (CC: component carrier)). It has been proposed to operate as a single wide frequency band (broadband system band) by using a combination of “carrier”)) (frequency band aggregation: spectrum aggregation, carrier aggregation). That is, one system band is composed of a plurality of component carriers having a partial bandwidth in the system band that is a usable frequency band. In each component carrier, a mobile station apparatus of LTE or LTE-A can operate. In addition, in order to use the frequency band allocated to the mobile communication system more flexibly, the frequency band used for downlink communication and the frequency band used for uplink communication have different frequency bandwidths. Has also been proposed.
3GPP TS (Technical Specification) 36.300, V8.4.0 (2008-03), 3rd Generation Partnership Project; Technical Specification Group Radio Access Network, Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access Network (E-UTRAN) ; Overall description; Stage 2 (Release 8)
However, in a known wireless communication system, there is a problem in that it is very inefficient to have a mobile station device completely up to the upper layer for the number of component carriers.
The present invention has been made in view of the above circumstances, and its purpose is to efficiently manage setting information held in a base station apparatus and a mobile station apparatus in a system in which a plurality of component carriers exist, To provide a mobile station apparatus, a base station apparatus, a mobile communication system, a mobile station apparatus communication method, a base station apparatus communication method, and a processing unit capable of promptly communicating.
In order to solve the above-described problem, a terminal device according to an aspect of the present invention is a terminal device, and the terminal device includes a plurality of first component carriers and a plurality of second component carriers. The base station apparatus communicates with the base station apparatus by carrier aggregation using the first component carrier, acquires system information broadcast on the first component carrier from the base station apparatus, and receives the second component carrier from the base station apparatus. A radio unit for acquiring system information corresponding to one of the second component carriers, the system information corresponding to one of the second component carriers is used in a communication state, and an RRC connection reconfiguration message ( It is updated using a Radio Resource Control Connection Reconfiguration message).
A base station apparatus according to an aspect of the present invention is a base station apparatus, and the base station apparatus uses a plurality of component carriers including one first component carrier and one or more second component carriers. The terminal device communicates with the terminal device by carrier aggregation, provides the terminal device with system information broadcast on the first component carrier, and provides the terminal device with one of the second component carriers. The system information corresponding to one of the second component carriers is used in a communication state, and an RRC connection reconfiguration message (Radio Resource Control Connection Reconfiguration) is provided. message).
A method according to an aspect of the present invention is a method executed by a terminal device, wherein the method uses a plurality of component carriers including one first component carrier and one or more second component carriers. A step of communicating with a base station device by carrier aggregation, a step of acquiring system information broadcasted by the first component carrier from the base station device, and a step of out of the second component carrier from the base station device Obtaining system information corresponding to one of the second component carriers, wherein the system information corresponding to one of the second component carriers is used in a communication state, and an RRC connection reconfiguration message (Radio Resource It is updated using Control Connection Reconfiguration message) To.
A method according to an aspect of the present invention is a method executed by a base station apparatus, wherein the method uses a plurality of component carriers including one first component carrier and one or more second component carriers. Communicating with the terminal device by carrier aggregation, providing the terminal device with system information broadcast on the first component carrier, and providing the second component carrier to the terminal device. Providing system information corresponding to one of the second component carriers, wherein the system information corresponding to one of the second component carriers is used in a communication state and an RRC connection reconfiguration message ( Updated using Radio Resource Control Connection Reconfiguration message) And butterflies.
A mobile station apparatus, a base station apparatus, a mobile communication system, a mobile station apparatus communication method, a base station apparatus communication method, and a processing unit according to the present invention include a base station apparatus and a mobile station apparatus It is possible to efficiently manage the setting information held in the network, and to communicate quickly.
It is a figure which shows the structure of the downlink channel used with the communication system by the 1st Embodiment of this invention. It is a figure which shows the structure of the uplink channel used with the communication system by the 1st Embodiment of this invention. It is a figure which shows the flame | frame structure used by the downlink of the communication system by the 1st Embodiment of this invention. It is a figure which shows the frame structure used by the uplink of the communication system by the 1st Embodiment of this invention. It is a schematic block diagram which shows the structure of the base station apparatus by the 1st Embodiment of this invention. It is a schematic block diagram which shows the structure of the mobile station apparatus by the 1st Embodiment of this invention. It is a sequence diagram which shows the process of the wireless communication system by the 1st Embodiment of this invention. It is a sequence diagram for demonstrating the 1st method of the processing procedure of the change notification of the system information by this invention. It is a sequence diagram for demonstrating the 2nd method of the process sequence of the change notification of the system information by this invention. It is a sequence diagram for demonstrating the 3rd method of the process sequence of the change notification of the system information by this invention. It is a sequence diagram for demonstrating the 4th method of the process sequence of the change notification of the system information by this invention. It is a figure which shows the channel structure used with the conventional radio | wireless communications system.
First, a first embodiment of the present invention will be described. The wireless communication system according to the first embodiment of the present invention includes one or more base station apparatuses and one or more mobile station apparatuses, and performs wireless communication therebetween. One base station apparatus constitutes one or more cells, and one cell can accommodate one or more mobile station apparatuses.
These channels are transmitted and received between the base station apparatus and the mobile station apparatus as shown in FIG. 7 described in the related art.
Next, the logical channel will be described. The broadcast control channel (BCCH) is a downlink channel used for broadcasting system control information. The paging control channel (PCCH) is a downlink channel used for transmitting paging information, and is used when the network does not know the cell position of the mobile station apparatus.
MBMS service transmission methods include single-cell point-to-multipoint (SCPTM) transmission and multimedia broadcast multicast service single frequency network (MBSFN) transmission. .
MBSFN transmission (MBSFN Transmission) is a simultaneous transmission technique realized by transmitting waveforms (signals) that can be simultaneously identified from a plurality of cells. On the other hand, SCPTM transmission is a method of transmitting an MBMS service by one base station apparatus.
The physical downlink control channel (PDCCH) is downlink shared channel (PDSCH) resource allocation, hybrid automatic repeat request (HARQ) information for downlink data, and uplink for physical uplink shared channel (PUSCH) resource allocation. This is a channel used to notify a mobile station apparatus of link transmission permission (uplink grant).
Next, the frame configuration used in the wireless communication system according to the first embodiment of the present invention will be described.
FIG. 3 is a diagram showing a frame configuration used in the downlink of the communication system according to the first embodiment of the present invention. FIG. 4 is a diagram showing a frame configuration used in the uplink of the communication system according to the first embodiment of the present invention. 3 and 4, the horizontal axis represents time, and the vertical axis represents frequency.
A radio frame identified by a system frame number (SFN) is composed of 10 milliseconds (10 ms). One subframe is composed of 1 millisecond (1 ms), and the radio frame includes ten subframes # F0 to # F9.
As shown in FIG. 3, the radio frame used in the downlink includes a physical control format indication channel (PCFICH), a physical hybrid automatic repeat request indication channel (PHICH), a physical downlink control channel (PDCCH), and a physical downlink synchronization signal. , A physical broadcast channel (PBCH), a physical downlink shared channel (PDSCH) / physical multicast channel (PMCH), and a downlink reference signal are arranged.
As shown in FIG. 4, the radio frame used in the uplink includes a physical random access channel (PRACH), a physical uplink control channel (PUCCH), a physical uplink shared channel (PUSCH), a reference signal for uplink demodulation, an uplink A link measurement reference signal is arranged.
One subframe (for example, subframe # F0) is divided into two slots # S0 and # S1. When a normal cyclic prefix (normal CP) is used, the downlink slot is composed of 7 OFDM symbols (see FIG. 3), and the uplink slot is 7 SC-FDMA (Single Carrier-Frequency). (Division Multiple Access) symbols (see FIG. 4).
When an extended CP (also referred to as a long CP or an extended CP) is used, the downlink slot is configured by 6 OFDM symbols, and the uplink slot is configured by 6 SC-FDMA symbols. Is done.
One slot is divided into a plurality of blocks in the frequency direction. One physical resource block (PRB) is configured with 12 subcarriers of 15 kHz as units in the frequency direction. The number of physical resource blocks (PRB) is supported from 6 to 110 depending on the system bandwidth. 3 and 4 show the case where the number of physical resource blocks (PRB) is 25. FIG. It is also possible to use different system bandwidths for uplink and downlink. Further, the total system bandwidth can be increased to 110 or more by aggregation. Usually, the component carrier is composed of 100 physical resource blocks, and the total system bandwidth can be made 500 physical resource blocks with 5 component carriers with a guard band between the component carriers. When this is expressed in terms of bandwidth, for example, the component carrier is composed of 20 MHz, and the total system bandwidth can be set to 100 MHz with five component carriers with the guard band between the component carriers.
Downlink and uplink resource allocation is performed in subframe units in the time direction and in physical resource block (PRB) units in the frequency direction. That is, two slots in a subframe are allocated with one resource allocation signal.
A unit composed of subcarriers and OFDM symbols or subcarriers and SC-FDMA symbols is called a resource element. A modulation symbol or the like is mapped to each resource element in the resource mapping process in the physical layer.
In processing in the physical layer of the downlink transport channel, 24-bit cyclic redundancy check (CRC) is added to the physical downlink shared channel (PDSCH), channel coding (transmission path coding), physical layer HARQ Processing, channel interleaving, scrambling, modulation (QPSK (Quadrature Phase Shift Keying), 16QAM (Quadrature Amplitude Modulation), 64QAM), layer mapping, precoding, resource mapping, antenna Mapping is performed.
On the other hand, in processing in the physical layer of the uplink transport channel, a 24-bit cyclic redundancy check (CRC) is assigned to the physical uplink shared channel (PUSCH), channel coding (transmission path coding), physical layer HARQ processing, Scrambling, modulation (QPSK, 16QAM, 64QAM), resource mapping, antenna mapping, etc. are performed.
The physical downlink control channel (PDCCH), the physical hybrid automatic repeat request indication channel (PHICH), and the physical control format indication channel (PCFICH) are arranged below the first 3 OFDM symbols.
In the physical downlink control channel (PDCCH), the transport format for the downlink shared channel (DL-SCH) and the paging channel (PCH) (which defines modulation scheme, coding scheme, transport block size, etc.), resource allocation, HARQ information is transmitted.
In addition, in the physical downlink control channel (PDCCH), a transport format for the uplink shared channel (UL-SCH) (modulation scheme, coding scheme, transport block size, etc.), resource allocation, and HARQ information are transmitted. Is done.
A plurality of physical downlink control channels (PDCCH) are supported, and the mobile station apparatus monitors a set of physical downlink control channels (PDCCH).
The physical downlink shared channel (PDSCH) allocated by the physical downlink control channel (PDCCH) is mapped to the same subframe as the physical downlink control channel (PDCCH).
The physical uplink shared channel (PUSCH) allocated by the physical downlink control channel (PDCCH) is mapped to a subframe at a predetermined position. For example, when the downlink subframe number of the physical downlink control channel (PDCCH) is N, it is mapped to the N + 4th uplink subframe.
Further, in uplink / downlink resource allocation using the physical downlink control channel (PDCCH), the mobile station apparatus is specified using 16-bit MAC layer identification information (MAC ID). That is, the 16-bit MAC layer identification information (MAC ID) is included in the physical downlink control channel (PDCCH).
Also, the downlink reference signal (downlink pilot channel) used for downlink state measurement and downlink data demodulation is arranged in the first, second, and third from the back of each slot. The
On the other hand, an uplink demodulation reference signal (demodulation pilot signal (DRS)) used for demodulating the physical uplink shared channel (PUSCH) is transmitted in the fourth SC-FDMA symbol of each slot. The
Also, an uplink measurement reference signal (scheduling pilot (SRS: Sounding Reference Signal)) used for uplink state measurement is transmitted in the last SC-FDMA symbol of the subframe.
The physical uplink control channel (PUCCH) demodulation reference signal is defined for each physical uplink control channel format, and the third and fourth and fifth of each slot, or the second and sixth SC- of each slot. It is transmitted with FDMA symbols.
In addition, the physical broadcast channel (PBCH) and the downlink synchronization signal are arranged in a band corresponding to the center 6 physical resource blocks in the system band. The physical downlink synchronization signal is transmitted in the sixth and seventh OFDM symbols of each slot of the first (subframe # F0) and fifth (subframe # F4) subframes.
The physical broadcast channel (PBCH) is 1 of the 4th, 5th OFDM symbol and 2nd slot (slot # S1) of the 1st slot (slot # S0) of the 1st subframe (subframe # F0). The second and second OFDM symbols are transmitted.
The physical random access channel (PRACH) is configured with a bandwidth corresponding to six physical resource blocks in the frequency direction and one subframe in the time direction. Request from mobile station device to base station device for various reasons (uplink resource request, uplink synchronization request, downlink data transmission resumption request, handover request, connection setting request, reconnection request, MBMS service request, etc.) Sent to do.
The physical uplink control channel (PUCCH) is arranged at both ends of the system band and is configured in units of physical resource blocks. Frequency hopping is performed so that both ends of the system band are alternately used between slots.
FIG. 5 is a schematic block diagram showing the configuration of the base station apparatus 100 according to the first embodiment of the present invention. The base station apparatus 100 includes a data control unit 101, an OFDM modulation unit 102, a radio unit 103, a scheduling unit 104, a channel estimation unit 105, a DFT-S-OFDM (DFT-Spread-OFDM) demodulation unit 106, a data extraction unit 107, An upper layer 108 and an antenna part A1 are provided.
The antenna unit A1, the radio unit 103, the channel estimation unit 105, the DFT-S-OFDM demodulation unit 106, and the data extraction unit 107 perform uplink physical layer processing. The antenna unit A1, the data control unit 101, the OFDM modulation unit 102, and the radio unit 103 perform processing on the downlink physical layer.
In downlink scheduling, the scheduling unit 104 performs feedback information received from the mobile station apparatus 200 (downlink channel feedback report (channel quality (CQI), number of streams (RI), precoding information (PMI), etc.)) ACK / NACK feedback information for downlink data, etc.), information on downlink physical resource blocks (PRB) that can be used by each mobile station apparatus, buffer status, scheduling information input from higher layer 108, etc. Selection processing of downlink transport format (transmission form) for modulating data (physical resource block (PRB) allocation, modulation scheme and encoding scheme, etc.), retransmission control in HARQ, and downlink scheduling And generates the scheduling information used for Yuringu. The scheduling information used for downlink scheduling is output to the data control unit 101 and the data extraction unit 107.
Further, in uplink scheduling, the scheduling unit 104 estimates the uplink channel state (radio channel state) output from the channel estimation unit 105, the resource allocation request from the mobile station device 200, and each mobile station device 200. Based on the downlink physical resource block (PRB) information that can be used, the scheduling information input from the higher layer 108, etc., and the uplink transport format (transmission form) for modulating each data (physical resource block) (PRB) allocation, modulation scheme, encoding scheme, etc.) selection processing and scheduling information used for uplink scheduling are generated.
The scheduling information used for uplink scheduling is output to the data control unit 101 and the data extraction unit 107.
The channel estimation unit 105 estimates an uplink channel state from an uplink demodulation reference signal (DRS: Demodulation Reference Signal) for demodulation of uplink data, and the estimation result is used as a DFT-S-OFDM demodulation unit 106. Output to. Also, in order to perform uplink scheduling, an uplink measurement reference signal (SRS: Sounding Reference)
The uplink channel state is estimated from (Signal), and the estimation result is output to the scheduling section 104.
The upper layer 108 has a radio resource control unit 109. In addition, the radio resource control unit 109 manages various setting information, system information, paging control, communication state management of each mobile station device, mobility management such as handover, management of buffer status for each mobile station device, Management of connection settings for unicast and multicast bearers, management of mobile station identifiers (UEID), and the like are performed. The upper layer 108 transmits / receives information to another base station apparatus and information to an upper node.
FIG. 6 is a schematic block diagram showing the configuration of the mobile station apparatus 200 according to the first embodiment of the present invention. The mobile station apparatus 200 includes a data control unit 201, a DFT-S-OFDM modulation unit 202, a radio unit 203, a scheduling unit 204, a channel estimation unit 205, an OFDM demodulation unit 206, a data extraction unit 207, an upper layer 208, and an antenna unit A2. It has.
The data control unit 201 acquires a transport channel from the scheduling unit 204. The data control unit 201 converts the transport channel and the signal and channel generated in the physical layer based on the scheduling information input from the scheduling unit 204 to the physical channel based on the scheduling information input from the scheduling unit 204. Map. Each piece of data mapped in this way is output to DFT-S-OFDM modulation section 202.
In uplink scheduling, the scheduling unit 204 receives the uplink buffer status input from the higher layer 208 and uplink scheduling information from the base station apparatus 100 input from the data extraction unit 207 (transport format and HARQ retransmission). Information), and scheduling processing for mapping the uplink logical channel input from the upper layer 208 to the transport channel and the uplink scheduling based on the scheduling information input from the upper layer 208, etc. Scheduling information to be generated is generated.
Note that the information notified from the base station apparatus 100 is used for the uplink transport format. The scheduling information is output to the data control unit 201 and the data extraction unit 207.
Further, the channel estimation unit 205 estimates the downlink channel state from the downlink reference signal (RS) in order to notify the base station apparatus 100 of the estimation result of the downlink channel state (radio channel state), This estimation result is converted into a downlink channel feedback report (channel quality information or the like) and output to the scheduling section 204.
In addition, based on the scheduling information from the scheduling unit 204, the data extraction unit 207 separates the data input from the OFDM demodulation unit 206 into transport channel and physical layer control data and outputs the data to the scheduling unit 204. The separated control data includes scheduling information such as downlink or uplink resource allocation and uplink HARQ control information. At this time, the search space (also referred to as a search region) of the physical downlink control signal (PDCCH) is decoded to extract downlink or uplink resource allocations addressed to the own station.
The radio resource control unit 209 manages various setting information, system information, paging control, local station communication status management, mobility management such as handover, buffer status management, unicast and multicast bearer connection setting. Management and management of mobile station identifier (UEID).
Returning to the description of the first embodiment, processing of the base station apparatus 100 and the mobile station apparatus 200 will be described.
The DL master area is a downlink frequency layer (component carrier or component carrier group) that is first accessed by the mobile station apparatus. The mobile station apparatus acquires another area (slave area) after acquiring a signal in this area. Is accessible. A downlink synchronization signal (SCH) that can acquire at least downlink synchronization is arranged.
The DL slave region is a downlink frequency layer (component carrier or component carrier group) that is accessed after the mobile station device acquires information in the master region, or that is accessed after an addition instruction from the base station device.
The UL master region is an uplink frequency layer (component carrier or component carrier group) that is first accessed by the mobile station apparatus, and is designated in the DL master region or associated with the DL master region. It is a component carrier group.
The UL slave region is an uplink frequency layer (component carrier or component carrier group) that the mobile station device accesses after communication in the UL master region or that is accessed after an addition instruction by the base station device.
Hereinafter, the term “master area” and “slave area” means a DL master area and / or a UL master area, a DL slave area, and / or a UL slave area.
In the slave region, a specific channel (downlink synchronization signal (SCH) and / or physical downlink broadcast channel (PBCH) and / or broadcast control channel (BCCH) and / or paging control channel (PCCH) and / or common control channel (CCCH) and / or physical uplink control channel (PUCCH), etc.) may not exist.
The master area and slave area for each mobile station apparatus may be different. That is, a master area for one mobile station apparatus may be configured as a slave area for another mobile station apparatus. In that case, a downlink synchronization signal (SCH) may be arranged also in a slave region for a certain mobile station apparatus.
The master region and the slave region may be arranged at adjacent carrier frequencies or may be arranged at separated carrier frequencies.
System information elements (parameters) managed by RRC are broadcast on a broadcast control channel (BCCH), or by RRC signaling on a common control channel (CCCH) and / or a dedicated control channel (DCCH), from a base station apparatus to a mobile station The device is notified.
A parameter (CCC: Component Carrier Common) used as a system information element (IE) managed by this RRC as common to all component carriers and a parameter (unique for each component carrier) (specific to each component carrier) It is classified and managed as CCD (Component Carrier Dedicated).
A system information element used in common for all component carriers is called a CCC system information element (CCCIE), and a system information element that differs for each component carrier is called a CCD system information element (CCDIE).
For example, IEs such as plmn-Identity, si-Periodicity, and cellIdentity are examples of CCCIE. Examples of CCDID are IEs used in idle state such as trackingAreaCode, cellBarred, q-Hyst, t-ReselectionEUTRAN, and IEs used in connected state such as systemInformationValueTag and radioResourceConfigCommon. If camping is performed on only one component carrier in the idle state, only one component carrier need be managed regardless of whether it is CCCIE or CCDIE.
In addition to system information block SIB (System Information Block) (a group of multiple IEs sent in the same transmission cycle) in which CCCIE and CCDIE are mixed, by newly preparing SIB only for CCDIE, scheduling and mobile station equipment IE management may be facilitated.
When notifying CCDIE by RRC signaling, a new RRC message type that specifies the component carrier number and notifies IE may be prepared, or the component carrier number is specified and IE is notified. Such an RRC connection reconfiguration message (RRCConnectionReconfiguration Message) may be expanded so that the IE can be notified by specifying the component carrier number.
When notifying the CCDIE by SIB, the IE is notified by designating the number of the component carrier to which the CCDIE is applied.
FIG. 7 is a sequence diagram showing processing of the wireless communication system according to the first embodiment of the present invention.
First, the mobile station apparatus 200 acquires the downlink synchronization signal (SCH) of the base station apparatus 100 by cell selection or cell reselection processing, and performs downlink synchronization processing (step S101). At this time, the downlink synchronization signal (SCH) is arranged in the master region Z01.
The mobile station apparatus 200 acquires the broadcast control channel (BCCH) transmitted through the physical broadcast channel (PBCH) and the physical downlink shared channel (PDSCH) so as to be operated in the master area Z01 (step S102). At this time, information on the master area Z01 (such as the system bandwidth (number of resource blocks) of the master area Z01) is acquired from the broadcast control channel (BCCH) (step S103). Further, a process that continues to be operated in the master area Z01 is performed.
The mobile station apparatus 200 performs an RRC connection establishment process in the master area Z01, and establishes a communication state (RRC connection state). In the RRC connection setup (common control channel (CCCH) (RRC signaling)) during the RRC connection establishment process and the dedicated control channel (DCCH) (RRC signaling) to the mobile station apparatus 200 in communication, the base station apparatus 100 To the mobile station apparatus 200, information on component carrier addition (information indicating the system bandwidth (number of resource blocks) in the master area and / or the carrier frequency and system bandwidth (number of resource blocks) in the slave area Z02, and / or the like) Version information of the mobile station device 200) is notified (step S104).
The common control channel (CCCH) and the dedicated control channel (DCCH) are mapped to the downlink shared channel (DL-SCH) in the master area Z01. This downlink shared channel (DL-SCH) is transmitted by the dynamic resource of the physical downlink shared channel specified by the physical downlink control channel (PDCCH).
The mobile station apparatus 200 that has acquired the information related to the component carrier addition adjusts the radio unit 203 so that it can receive the slave area Z02.
After acquiring information related to component carrier addition, the mobile station device 200 acquires the system information element defined in the CCD from the broadcast control channel (BCCH) broadcast in the slave area. Alternatively, the base station apparatus 100 uses the RRC signaling transmitted through the common control channel (CCCH) or the dedicated control channel (DCCH) to transmit the CCD system information element defined in the CCD together with information related to component carrier addition to the mobile station apparatus 200. Notify
When the mobile station apparatus 200 acquires the CCD system information element notified from the base station apparatus 100 through RRC signaling, the mobile station apparatus 200 manages the CCD system information element for each component carrier (step S105). That is, the mobile station apparatus 200 manages the CCD system information element, CCDIE1, CCDIE2,..., CCDIEn for each component carrier 1, component carrier 2,. , Manage CCCIE.
The mobile station device 200 may start communication with each component carrier from the component carrier that has acquired the CCDIE, or after acquiring the CCDIE of all the added component carriers designated by the base station device 100, Communication with the added component carrier may be started.
When the base station apparatus 100 has a plurality of master areas Z01 in the accommodated band, it is necessary to detect the master area Z01 of the mobile station apparatus 200. The master area Z01 of the mobile station apparatus 200 is detected using a physical random access channel (PRACH) or a random access channel (RACH), or the master area Z01 of the mobile station apparatus 200 is a common control channel (CCCH). The mobile station apparatus 200 notifies the base station apparatus 100 during the random access procedure.
The master area Z01 of the mobile station device 200 can be designated and changed from the base station device 100 through a dedicated control channel (DCCH) (RRC signaling).
The diagram on the left side of the sequence diagram of FIG. 7 shows frequency regions that can be received by the mobile station apparatus 200 in each step and system information elements that are used. Steps S101 to S103 are the resources of the region necessary for acquiring the physical broadcast channel arranged in a part of the master region Z01. Steps S103 to S105 are the resources of the region of the master region Z01. The mobile station apparatus 200 can receive the resources of the master area Z01 and the slave area Z02.
Further, a method for separately managing the CCD and CCC in the uplink and downlink will be described. A parameter (CCDL: Component Carrier Common Downlink) that uses a system information element (IE) managed by RRC as common to all downlink component carriers and a parameter (CCDDL: different for each downlink component carrier) Component Carrier Dedicated Downlink) (CCCUL: Component Carrier Common Uplink) and parameters different for each uplink component carrier (CCDUL: Component Carrier Dedicated Uplink) Manage.
In step 104, the mobile station apparatus 200 acquires information on component carrier addition, and then determines whether the information on component carrier addition is uplink component carrier addition, downlink component carrier addition, downlink and uplink component Determine if you are adding a carrier. That is, it is specified in the RRC signaling for component addition whether the component carrier to be added is an uplink or a downlink.
When the component carrier addition is an uplink, the mobile station apparatus 200 displays the system information element defined in the CCDUL, and when the component carrier addition is a downlink, the system information element defined in the CCDDL is the downlink. In the case of uplink, system information elements defined in CCDDL and CCDUL are acquired from the broadcast control channel (BCCH) broadcast in the slave area. Alternatively, the base station apparatus 100 uses the RRC signaling transmitted on the common control channel (CCCH) or the dedicated control channel (DCCH) to transmit the CCD system information element defined in the CCDDL and / or CCDUL together with information on component carrier addition. The mobile station apparatus 200 is notified.
When the mobile station apparatus 200 acquires the CCD system information element notified from the base station apparatus 100 by RRC signaling, the mobile station apparatus 200 manages the CCD system information element for each uplink component carrier and each downlink component carrier. That is, the mobile station device 200 manages the UL component carrier 1, the UL component carrier 2,..., The UL component carrier n for each CCDUL system information element (CCDULIE1, CCDULIE2,..., CCDULIEn) and the DL component carrier 1, DL In addition to managing the CCDDL system information elements (CCDDLIE1, CCDDLIE2,..., CCDDLIEm) for each component carrier 2,..., DL component carrier m, the CCC system information element, CCCIE common to the component carriers is managed.
The mobile station apparatus 200 starts communication on each uplink component carrier from the uplink component carrier that acquired the CCDULIE, and starts communication on each downlink component carrier from the downlink component carrier that acquired the CCDDLIE. Alternatively, after acquiring the CCDDLIE and / or CCDULIE of all the added uplink and / or downlink component carriers designated from the base station apparatus 100, the added uplink and / or downlink component carriers are acquired. Communication may be started.
Next, the first method of the processing procedure for system information change notification will be described with reference to FIG. The change of the system information is notified using the paging channel (PCH). When the CCDIE and / or CCCIE is changed, the base station device 100 includes the change notification in the paging channel (PCH) and notifies the mobile station device in the system (step S201).
When the system information change notification is included in the paging channel (PCH), the mobile station device 200 includes each downlink component carrier or each downlink component carrier group in the component carrier group accessed by the mobile station. Each value tag (Value Tag) that has been broadcasted at is verified (Step S202, Step S203). The value tag (Value Tag) is a value that is incremented every time system information is updated, and is broadcast information used by the mobile station device to check whether the system information has been updated. (BCCH) is transmitted (step S204). In the case of a system composed of a plurality of component carriers, the value tag (Value Tag) indicates whether the system information on the component carrier in which the value tag (Value Tag) is arranged has been updated.
The system information (broadcast control channel (BCCH)) of the downlink component carrier, which is a value of a value tag different from the value tag held by the mobile station device 200, is re-read to update the system information. That is, the mobile station apparatus 200 re-reads and updates only the updated system information of the component carrier (step S205).
In this case, the mobile station apparatus 200 communicating with a plurality of component carriers monitors the paging channel (PCH) of each component carrier.
Next, a second method of the system information change notification processing procedure will be described with reference to FIG. The change of the system information is notified using the paging channel (PCH). When the CCDIE and / or the CCCIE is changed, the base station device 100 includes a change notification in the paging channel (PCH) and notifies the mobile station device in the system (step S301).
When the CCCIE is changed, the base station device 100 places a normal change notification on the paging channel (PCH) and notifies the mobile station device 200 that the system information has been changed. When the CCDIE is changed, normal system information change notification is transmitted on the paging channel (PCH) of the component carrier that is actually changed. When the CCDIE is changed, a special system information change notification is made on the paging channel (PCH) of the component carrier other than the actually changed component carrier (system information is changed on a component carrier other than the component carrier). Change notification) is transmitted.
In this case, the mobile station apparatus communicating with one component carrier does not read the special system information change. In addition, the mobile station apparatus that has an older release version of the mobile station apparatus and can communicate with only one component carrier is encoded so that the change of the special system information cannot be read. A mobile station apparatus that has an old release version of the mobile station apparatus and can communicate with only one component carrier does not notice the special system information change notification. This is, for example, encoded in the paging channel (PCH) as a special system information change notification as option information or in the physical downlink control channel (PDCCH) used when scheduling the paging channel (PCH). By giving special information and transmitting, only the mobile station apparatus communicating with a plurality of component carriers can receive the special system information change notification.
As a method of adding special information to the physical downlink control channel (PDCCH) used when scheduling the paging channel (PCH), for example, a flag indicating that it is simply a notification of change of special system information The mobile station apparatus 200 determines the type of the paging channel (PCH) based on the flag value, and the MAC ID value allocated to the physical downlink control channel (PDCCH) is set to the normal paging channel (PCH). For example, a method is used in which the SPI station is different from the PI-RNTI used for the mobile station apparatus 200 and the mobile station apparatus 200 determines the type of the paging channel (PCH) based on the MAC ID value.
The mobile station apparatus 200 is a component in which the paging channel (PCH) is placed when the paging channel (PCH) includes a normal system information change notification.
The value tag (Value Tag) broadcasted by the carrier is verified (Step S302, Step S303), and if the value Tag is different from the Value Tag held by the mobile station device 200, the system information is read again. The system information is updated (step S304, step S305).
When the paging channel (PCH) includes a special system information change notification, the mobile station apparatus 200 includes each downlink component carrier or each downlink component in the component carrier group accessed by the mobile station. Each value tag (Value Tag) broadcast in the carrier group is verified (step S302, step S303). The system information of the downlink component carrier, which is a value of a value tag different from the value tag held by the mobile station apparatus 200, is read again, and the system information is updated (steps S304 and S305). When the paging channel (PCH) includes a special system information change notification, the mobile station apparatus 200 includes a special system information change notification from the component carrier of the Value Tag to be verified. You may exclude the component carrier by which the paging channel (PCH) is arrange | positioned.
That is, the mobile station device 200 rereads and updates only the updated system information of the component carrier.
In this case, the mobile station apparatus 200 communicating with a plurality of component carriers only needs to receive one paging channel (PCH) in the plurality of component carriers.
Next, a third method of the processing procedure for system information change notification will be described with reference to FIG. The change of the system information is notified using the paging channel (PCH). When the CCDIE and / or the CCCIE is changed, the base station device 100 includes the change notification in the paging channel (PCH) and notifies the mobile station device in the system (step S401).
In this case, the mobile station apparatus communicating with one component carrier does not read the special system information change. In addition, the mobile station apparatus that has an older release version of the mobile station apparatus and can communicate with only one component carrier is encoded so that the change of the special system information cannot be read. A mobile station apparatus that has an old release version of the mobile station apparatus and can communicate with only one component carrier does not notice the special system information change notification. The notification method of the special system information change notification is the same as the second method described above.
However, in the third method, the special system information change notification includes information indicating the component carrier having the changed system information. With the information indicating the component carrier having the changed system information, the component carrier corresponding to the system information that the mobile station apparatus 200 needs to update can be specified. For example, the paging channel (PCH) encodes information specifying the component carrier corresponding to the special system information change notification and the system information that needs to be updated as option information, or the paging channel (PCH). Only a mobile station apparatus communicating with a plurality of component carriers can transmit the special downlink control channel (PDCCH) used when scheduling the mobile station apparatus by adding special information to the physical downlink control channel (PDCCH). Enable system information change notifications to be received.
As a method of adding special information to the physical downlink control channel (PDCCH) used when scheduling the paging channel (PCH), for example, a flag indicating that it is simply a notification of change of special system information Information for identifying the component carrier corresponding to the system information that needs to be updated is arranged, and the mobile station apparatus 200 determines the component carrier corresponding to the system information that needs to be updated based on the value, and the physical downlink Unlike the PI-RNTI used for the normal paging channel (PCH), the value of the MAC ID arranged in the control channel (PDCCH) is different for each component carrier corresponding to the system information that needs to be updated. -RNTI and its MAC I A method of determining a component carrier corresponding to system information that the mobile station apparatus 200 needs to update based on the value of D is used.
When the paging channel (PCH) includes a normal system information change notification, the mobile station device 200 notifies the value tag (Value) that is broadcast on the component carrier in which the paging channel (PCH) is placed. Tag) (step S402, step S403), and if the value of the value tag is different from the value tag held by the mobile station apparatus 200, the system information is read again and the system information is updated (step S404, Step S405).
When the paging channel (PCH) includes a special system information change notification, the mobile station device 200 is accessed by the mobile station based on information indicating the component carrier having the changed system information. The value tag (Value Tag) broadcast on the downlink component carrier corresponding to the information indicating the component carrier having the changed system information in the component carrier group is verified (steps S402 and S403). When a value of a value tag different from the value tag held by the mobile station device 200 is detected, the system information of the downlink component carrier is read again, and the system information is updated (steps S404 and S405).
Next, a fourth method of the processing procedure for system information change notification will be described with reference to FIG. The change of the system information is notified using the paging channel (PCH). When the CCDIE and / or the CCCIE is changed, the base station device 100 includes the change notification in the paging channel (PCH) and notifies the mobile station device in the system (step S501).
When the CCCIE is changed, the base station apparatus 100 places a system information change notification on the paging channel (PCH) and notifies the mobile station apparatus 200 that the system information has been changed. When the CCDIE is changed, a system information change notification is transmitted on the paging channel (PCH) of the actually changed component carrier.
The mobile station apparatus 200 monitors the paging channel (PCH) of the component carrier set as the master. When the system information change notification is included in the paging channel (PCH), the value tag (Value Tag) broadcast on the component carrier in which the paging channel (PCH) is placed is verified (step S502). In step S503), if the value of the value tag is different from the value tag held by the mobile station apparatus 200, the system information is read again and the system information is updated (step S504, step S505).
When the mobile station apparatus 200 communicates with a plurality of component carriers and the system information is updated on a component carrier other than the master area for the mobile station apparatus 200, the base station apparatus 100 performs the common control channel (CCCH ) Or RRC signaling transmitted through the dedicated control channel (DCCH), and notifies the mobile station apparatus 200 of the CCDIE (step S506). When the mobile station apparatus 200 acquires the CCDIE notified from the base station apparatus 100 by RRC signaling, the mobile station apparatus 200 manages the CCDIE for each component carrier (step S507).
Thereby, the mobile station apparatus 200 only needs to monitor the paging channel (PCH) of only the master area. Further, the base station apparatus 100 only needs to transmit the paging channel (PCH) only on the changed component carrier.
In each of the above embodiments, for convenience of explanation, the case where the base station apparatus and the mobile station apparatus are one-to-one has been described as an example, but there may be a plurality of base station apparatuses and mobile station apparatuses. Further, the mobile station device is not limited to a moving terminal, and may be realized by mounting the function of the mobile station device on a base station device or a fixed terminal.
Further, in each of the embodiments described above, each function in the base station apparatus and a program for realizing each function in the mobile station apparatus are recorded on a computer-readable recording medium and recorded on this recording medium. The base station apparatus or mobile station apparatus may be controlled by causing the computer system to read and execute the program. Here, the “computer system” includes an OS and hardware such as peripheral devices.
The “computer-readable recording medium” refers to a storage device such as a flexible medium, a magneto-optical disk, a portable medium such as a ROM and a CD-ROM, and a hard disk incorporated in a computer system. Furthermore, the “computer-readable recording medium” means that a program is dynamically held for a short time, like a communication line when a program is transmitted via a network such as the Internet or a communication line such as a telephone line. In this case, it is intended to include those that hold a program for a certain period of time, such as a volatile memory inside a computer system serving as a server or a client in that case. The program may be a program for realizing a part of the functions described above, and may be a program capable of realizing the functions described above in combination with a program already recorded in a computer system. .
The first technical means is a mobile station device, and when the system information of the second component carrier and the means for acquiring updated system information broadcasted by the first component carrier are changed, Means for acquiring updated system information for the second component carrier by a radio resource control message transmitted from the base station device using a dedicated control channel (DCCH). It is.
The second technical means is a mobile station apparatus characterized in that in the first technical means, means for detecting a notification of a change in system information broadcast from the first component carrier through paging is provided.
The third technical means is a base station device, and moves when the updated system information broadcast on the first component carrier and the system information on the second component carrier are changed. Means for transmitting updated system information for the second component carrier by means of a radio resource control message transmitted using a dedicated control channel (DCCH) to the station apparatus. Device.
A fourth technical means is a base station apparatus characterized by comprising means for notifying a change in system information broadcast on the first component carrier by paging in the third technical means.
A fifth technical means is a communication method of a mobile station apparatus, which obtains updated system information broadcasted by a first component carrier and changes system information of a second component carrier. The communication method is characterized in that updated system information for the second component carrier is obtained by a radio resource control message transmitted from a base station apparatus using a dedicated control channel (DCCH).
A sixth technical means is a communication method characterized in that, in the fifth technical means, notification of a change in system information broadcasted by the first component carrier from paging is detected.
The seventh technical means is a communication method of the base station apparatus, which transmits updated system information broadcasted by the first component carrier, and when the system information of the second component carrier is changed. In the communication method, the updated system information for the second component carrier is transmitted by a radio resource control message transmitted using a dedicated control channel (DCCH) to the mobile station apparatus.
The eighth technical means is a communication method characterized in that, in the seventh technical means, notification of a change in system information notified by the first component carrier is made by paging.
When the mobile station apparatus acquires the updated system information broadcast on the first component carrier and the system information on the second component carrier is changed, the base station apparatus changes the dedicated control channel ( Means for obtaining updated system information for the second component carrier by means of a radio resource control message transmitted using DCCH).
The mobile station apparatus according to Configuration 1, comprising means for detecting a notification of a change in system information broadcast from the paging on the first component carrier.
Dedicated control for the mobile station apparatus when the base station apparatus transmits the updated system information broadcasted on the first component carrier and the system information of the second component carrier is changed Means for transmitting updated system information for the second component carrier by a radio resource control message transmitted using a channel (DCCH).
The base station apparatus according to Configuration 3, comprising means for notifying a change in system information broadcasted by the first component carrier by paging.
A communication method for a mobile station apparatus, wherein updated system information broadcasted by a first component carrier is acquired, and when the system information of a second component carrier is changed, a dedicated control channel is transmitted from the base station apparatus A communication method comprising: acquiring updated system information for the second component carrier by a radio resource control message transmitted using (DCCH).
6. The communication method according to Configuration 5, wherein a notification of a change in system information broadcast on the first component carrier is detected from paging.
A communication method of a base station apparatus, wherein updated system information broadcasted by a first component carrier is transmitted, and dedicated to the mobile station apparatus when the system information of the second component carrier is changed A communication method, comprising: transmitting updated system information for the second component carrier by a radio resource control message transmitted using a control channel (DCCH).
The communication method according to Configuration 7, wherein a change in system information broadcast on the first component carrier is notified by paging.
DESCRIPTION OF SYMBOLS 100 ... Base station apparatus 101 ... Data control part 102 ... OFDM modulation part 103 ... Radio | wireless part 104 ... Scheduling part 105 ... Channel estimation part 106 ... DFT-S-OFDM demodulation part 107 ... Data extraction part, DESCRIPTION OF SYMBOLS 108 ... Upper layer, 200 ... Mobile station apparatus, 201 ... Data control part, 202 ... DFT-S-OFDM modulation part, 203 ... Radio | wireless part, 204 ... Scheduling part, 205 ... Channel estimation part, 206 ... OFDM demodulation part, 207 ... Data extraction unit, 208 ... upper layer, A1, A2 ... antenna unit.
Communicating with the base station apparatus by carrier aggregation using a plurality of component carriers including one first component carrier and one or more second component carriers,
From the base station apparatus, obtain first system information broadcast on the first component carrier,
Obtaining from the base station apparatus second system information corresponding to one of the second component carriers;
It has a radio part,
The second system information corresponding to one of said second component carrier is used in Connected state, is updated using the RRC connection reconfiguration message (Radio Resource Control Connection Reconfiguration message) ,
Communicating with a terminal device by carrier aggregation using a plurality of component carriers including one first component carrier and one or more second component carriers,
Providing the terminal device with first system information broadcast on the first component carrier;
Providing the terminal device with second system information corresponding to one of the second component carriers;
A method executed by a terminal device,
Communicating with the base station apparatus by carrier aggregation using a plurality of component carriers including one first component carrier and one or more second component carriers;
Obtaining from the base station device first system information broadcast on the first component carrier;
Obtaining second system information corresponding to one of the second component carriers from the base station apparatus;
A processing circuit is mounted on the terminal device;
The processing circuit causes the terminal device to execute the method.
A method performed by a base station device, comprising:
Communicating with a terminal device by carrier aggregation using a plurality of component carriers including one first component carrier and one or more second component carriers;
A processing circuit is mounted on the base station device;
The processing circuit causes the base station apparatus to execute the method.
The second system information corresponding to one of said second component carrier comprises RadioResourceConfigCommon,
The notification of the change of the first system information broadcast on the first component carrier is transmitted using a paging channel in the first component carrier.
The first system information broadcast by the first component carrier comprises a value tag (Value Tag),
The value tag is used to determine whether it is different from the value tag held in the terminal device;
JP2015228112A 2008-10-22 2015-11-20 Terminal apparatus, base station apparatus, method executed by terminal apparatus, and method executed by base station apparatus Active JP6063027B2 (en)
JP2015228112A JP6063027B2 (en) 2008-10-22 2015-11-20 Terminal apparatus, base station apparatus, method executed by terminal apparatus, and method executed by base station apparatus
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JP2015228112A Active JP6063027B2 (en) 2008-10-22 2015-11-20 Terminal apparatus, base station apparatus, method executed by terminal apparatus, and method executed by base station apparatus
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