WO2015098837A1 - 端末装置、基地局装置、通信システム、通知方法および集積回路 - Google Patents
端末装置、基地局装置、通信システム、通知方法および集積回路 Download PDFInfo
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- WO2015098837A1 WO2015098837A1 PCT/JP2014/083908 JP2014083908W WO2015098837A1 WO 2015098837 A1 WO2015098837 A1 WO 2015098837A1 JP 2014083908 W JP2014083908 W JP 2014083908W WO 2015098837 A1 WO2015098837 A1 WO 2015098837A1
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- terminal device
- base station
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- cell
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
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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
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/24—Cell structures
- H04W16/32—Hierarchical cell structures
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/22—Processing or transfer of terminal data, e.g. status or physical capabilities
- H04W8/24—Transfer of terminal data
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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
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
- H04L5/005—Allocation of pilot signals, i.e. of signals known to the receiver of common pilots, i.e. pilots destined for multiple users or terminals
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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
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
- H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
Definitions
- Embodiments described herein relate generally to a terminal device, a base station device, a communication system, a notification method, and an integrated circuit technology that efficiently notify the capability of the terminal device.
- 3GPP 3rd Generation Partnership Project
- 3GPP which is a standardization project, has evolved to realize high-speed communication by adopting OFDM (Orthogonal Frequency Frequency Division) Multiplexing (OFDM) communication schemes and flexible scheduling in predetermined frequency and time units called resource blocks.
- OFDM Orthogonal Frequency Frequency Division
- EUTRA Universal Terrestrial Radio Access
- 3GPP is studying Advanced EUTRA, which realizes faster data transmission and has upward compatibility with EUTRA.
- EUTRA mainly assumes a network in which base station apparatuses have substantially the same cell configuration (cell size).
- Advanced EUTRA a network in which base station apparatuses (cells) having different configurations are mixed in the same area.
- a control method adapted to such a network has been studied.
- the terminal device includes a plurality of base station devices.
- the technology “Dual Connectivity (dual connectivity, dual connectivity)) which connects and communicates simultaneously with the cell is examined (nonpatent literature 1).
- Non-Patent Document 2 shows a plurality of architectures in dual connectivity.
- the base station apparatus When the base station apparatus is notified of only one piece of information indicating whether or not dual connectivity is possible for a combination of frequency bands that can be aggregated by the terminal apparatus as in the case of conventional carrier aggregation, the base station The device cannot specify which function the terminal device can realize in the dual connectivity.
- Embodiments of the present invention have been made in view of the above-described problems, and are related to a terminal device, a base station device, a communication system, a notification method, and an integrated circuit that can efficiently notify the capability of the terminal device. It is an object of the present invention to solve at least one of the above problems.
- a terminal apparatus is a terminal apparatus capable of communicating with a plurality of base station apparatuses using a plurality of serving cells including a primary cell and a secondary cell, and terminal apparatus capability information
- First information indicating whether to support transmission / reception with respect to a plurality of the base station devices, and second information indicating whether to support divisional transmission of radio bearers related to the plurality of base station devices
- a terminal device capability message including the terminal device capability information is transmitted to the base station device, and transmission / reception with respect to the plurality of base station devices is performed by a plurality of MAC layers respectively corresponding to the plurality of base station devices,
- the plurality of MAC layers support transmission of physical uplink control channels in cells in a cell group belonging to the plurality of base station apparatuses.
- the first information may be set corresponding to a combination of frequency bands supported by the terminal device.
- the terminal device capability information may be information indicating whether or not communication using dual connectivity is possible in the combination of the frequency bands.
- a base station apparatus is a base station apparatus capable of communicating with a terminal apparatus using a plurality of serving cells including a primary cell and a secondary cell, wherein the terminal apparatus Indicates, as terminal device capability information, first information indicating whether to support transmission / reception with respect to a plurality of base station devices, and whether to support split transmission of radio bearers related to the plurality of base station devices.
- the base station apparatus transmits radio resource setting information to the terminal apparatus based on the first information set corresponding to each combination of frequency bands. It may be configured.
- the base station apparatus can set radio resource setting information related to dual connectivity in the terminal apparatus based on the first information set corresponding to a combination of frequency bands. It may be configured to determine whether or not.
- a communication system includes a terminal device that communicates using a plurality of serving cells including a primary cell and a secondary cell, a base station device that communicates with the terminal device, The terminal device includes, as terminal device capability information, first information indicating whether to support transmission / reception with respect to the plurality of base station devices, and a plurality of the base station devices.
- the base station apparatus receives a terminal apparatus capability message including the terminal apparatus capability information, and transmits radio resource setting information based on the terminal apparatus capability information to the terminal apparatus. Send.
- a communication method is a notification method of a terminal device capable of communicating with a plurality of base station devices using a plurality of serving cells including a primary cell and a secondary cell.
- the terminal device capability information indicates first information indicating whether transmission / reception with respect to the plurality of base station devices is supported, and indicates whether to support divisional transmission of radio bearers related to the plurality of base station devices. Second information is set, and a terminal device capability message including the terminal device capability information is transmitted to the base station device.
- Each of the plurality of MAC layers corresponding to each base station apparatus is configured to perform physical uplink control in cells within a cell group belonging to the plurality of base station apparatuses. To support the channel transmission of.
- the communication method according to the other embodiment may further include a step of setting the first information corresponding to a combination of frequency bands supported by the terminal device.
- a communication method is a communication method of a base station device capable of communicating with a terminal device using a plurality of serving cells including a primary cell and a secondary cell, As terminal device capability information from the terminal device, first information indicating whether to support transmission / reception with respect to the plurality of base station devices, and whether to support divisional transmission of radio bearers related to the plurality of base station devices.
- Receiving a terminal device capability message including: and transmitting radio resource setting information based on the terminal device capability information to the terminal device, wherein the first information is
- the terminal device can transmit a plurality of MAC layers respectively corresponding to the plurality of base station devices and a physical uplink control channel in the plurality of MAC layers. Shows the Rukoto.
- An integrated circuit is an integrated circuit mounted on a terminal device capable of communicating with a plurality of base station devices using a plurality of serving cells including a primary cell and a secondary cell. And as terminal device capability information, it is the 1st information which shows whether transmission / reception with respect to several said base station apparatus is supported, and whether to support the division
- a function of setting second information indicating the above and a function of transmitting a terminal device capability message including the terminal device capability information to the base station device, and causing the terminal device to exhibit at least a plurality of the bases Transmission / reception to / from the station apparatus is performed by a plurality of MAC layers respectively corresponding to the plurality of base station apparatuses, and the plurality of MAC layers are cell groups belonging to the plurality of base station apparatuses. It supports the transmission of physical uplink control channel in a cell of the inner.
- the integrated circuit according to the other embodiment described above causes the terminal device to exhibit a function of setting the first information corresponding to a combination of frequency bands supported by the terminal device. It may be configured as follows.
- An integrated circuit according to another embodiment of the present invention is an integrated circuit mounted on a base station apparatus capable of communicating with a terminal apparatus using a plurality of serving cells including a primary cell and a secondary cell.
- the terminal device capability information from the terminal device the first information indicating whether transmission / reception with respect to the plurality of base station devices is supported and the divisional transmission of the radio bearers related to the plurality of base station devices are supported.
- the embodiment of the present invention it is possible to provide a technology related to a terminal device, a base station device, a communication system, a notification method, and an integrated circuit that can efficiently notify the capability of the terminal device.
- a channel means a medium used for signal transmission / reception
- a physical channel means a physical medium used for signal transmission / reception.
- a physical channel can be used synonymously with a signal.
- the physical channel may be added in the future in EUTRA and Advanced EUTRA, or the structure and format of the physical channel may be changed or added. However, even if changed or added, the description of each embodiment of the present invention is provided. It does not affect.
- Radio frames In EUTRA and Advanced EUTRA, scheduling of physical channels or physical signals is managed using radio frames.
- One radio frame is 10 ms, and one radio frame is composed of 10 subframes. Further, one subframe is composed of two slots (that is, one subframe is 1 ms, and one slot is 0.5 ms).
- resource blocks are used as a minimum scheduling unit in which physical channels are allocated.
- a resource block is defined by a constant frequency region composed of a set of a plurality of subcarriers (for example, 12 subcarriers) and a region composed of a constant transmission time interval (1 slot) on the frequency axis.
- the synchronization signal (Synchronization Signals) is composed of three types of primary synchronization signals and secondary synchronization signals composed of 31 types of codes arranged alternately in the frequency domain. 504 kinds of cell identifiers (physical cell ID (Physical Cell Identity; PCI)) for identifying the base station apparatus and frame timing for radio synchronization are shown by the combination.
- the terminal device specifies the physical cell ID of the synchronization signal received by the cell search.
- the physical broadcast information channel (PBCH; Physical BroadcastconfigurationChannel) is transmitted for the purpose of reporting (configuration) control parameters (broadcast information (system information); System information) that are commonly used in terminal devices in the cell .
- the broadcast information that is not notified in the physical broadcast information channel is notified to the terminal device in the cell of the radio resource in which the broadcast information is transmitted in the physical downlink control channel, and the physical downlink shared channel in the notified radio resource.
- a layer 3 message (system information) for notifying broadcast information is transmitted.
- CGI Cell Global Identifier
- TAI Tracking Area Identifier
- Downlink reference signals are classified into a plurality of types according to their use.
- cell-specific reference signals are pilot signals transmitted at a predetermined power for each cell, and are downlink reference signals that are periodically repeated in the frequency domain and the time domain based on a predetermined rule. It is.
- the terminal device measures the reception quality for each cell by receiving the cell-specific RS.
- the terminal apparatus also uses the downlink cell-specific RS as a reference signal for demodulating the physical downlink control channel or physical downlink shared channel transmitted simultaneously with the cell-specific RS.
- a sequence used for the cell-specific RS a sequence that can be identified for each cell is used.
- the downlink reference signal is also used for estimation of downlink propagation path fluctuation.
- a downlink reference signal used for estimation of propagation path fluctuation is referred to as a channel state information reference signal (CSI-RS).
- the downlink reference signal set individually for the terminal device is referred to as UE specific reference signals (URS) or demodulation RS (DMRS), and demodulates the physical downlink control channel or the physical downlink shared channel. This is referred to for the channel propagation compensation process.
- URS UE specific reference signals
- DMRS demodulation RS
- the physical downlink control channel (PDCCH; Physical Downlink Control Channel) is transmitted from the top of each subframe using several OFDM symbols (for example, 1 to 4 OFDM symbols).
- An enhanced physical downlink control channel (EPDCCH; “Enhanced” Physical “Downlink” Control ”Channel) is a physical downlink control channel arranged in an OFDM symbol in which the physical downlink shared channel PDSCH is arranged.
- the PDCCH or EPDCCH is used for the purpose of notifying the terminal device of radio resource allocation information according to the scheduling of the base station device and information for instructing an adjustment amount of increase / decrease of transmission power.
- a physical downlink control channel (PDCCH) it means both physical channels of PDCCH and EPDCCH unless otherwise specified.
- the terminal apparatus Before transmitting / receiving layer 3 messages (paging, handover command, etc.) that are downlink data and downlink control data, the terminal apparatus monitors (monitors) the physical downlink control channel addressed to itself and By receiving the physical downlink control channel, it is necessary to acquire radio resource allocation information called an uplink grant during transmission and a downlink grant (downlink assignment) during reception from the physical downlink control channel.
- the physical downlink control channel may be configured to be transmitted in the area of the resource block that is assigned individually (dedicated) from the base station apparatus to the terminal apparatus, in addition to being transmitted by the OFDM symbol described above. Is possible.
- a physical uplink control channel is a reception acknowledgment (ACK / NACK; Acknowledgement / Negative Acknowledgment) or downlink propagation path (channel state) information of data transmitted on the physical downlink shared channel. (CSI; Channel State Information), and uplink radio resource allocation request (radio resource request, scheduling request (SR)).
- ACK / NACK reception acknowledgment
- CSI Channel State Information
- SR uplink radio resource allocation request
- CSI includes CQI (Channel Quality Indicator), PMI (Precoding Matrix Indicator), PTI (Precoding Type Indicator), and RI (Rank Indicator). Each Indicator may be written as Indication.
- the physical downlink shared channel (PDSCH: Physical Downlink Shared Channel) is also used to notify the terminal device of not only downlink data but also broadcast information (system information) not notified by the paging or physical broadcast information channel as a layer 3 message. Is done.
- the radio resource allocation information of the physical downlink shared channel is indicated by the physical downlink control channel.
- the physical downlink shared channel is transmitted after being arranged in an OFDM symbol other than the OFDM symbol through which the physical downlink control channel is transmitted. That is, the physical downlink shared channel and the physical downlink control channel are time division multiplexed within one subframe.
- the physical uplink shared channel mainly transmits uplink data and uplink control data, and can also include control data such as downlink reception quality and ACK / NACK.
- uplink control information is also used to notify the base station apparatus from the terminal apparatus as a layer 3 message.
- the radio resource allocation information of the physical uplink shared channel is indicated by the physical downlink control channel.
- the uplink reference signal (uplink reference signal; Uplink Reference Signal, uplink pilot signal, also called uplink pilot channel) is transmitted from the base station apparatus to the physical uplink control channel PUCCH and / or the physical uplink shared channel PUSCH.
- Demodulation reference signal (DMRS; Demodulation Reference Signal) used for demodulation and a sounding reference signal (SRS; Sounding Reference Signal) used mainly by the base station apparatus to estimate the uplink channel state It is.
- DMRS Demodulation reference signal
- SRS Sounding Reference Signal
- the sounding reference signal includes a periodic sounding reference signal (Periodic SRS) transmitted periodically and an aperiodic sounding reference signal (Aperiodic SRS) transmitted when instructed by the base station apparatus. .
- Period SRS periodic sounding reference signal
- Aperiodic SRS aperiodic sounding reference signal
- the Physical Random Access Channel (PRACH; “Physical Random Access Channel”) is a channel used to notify (set) a preamble sequence and has a guard time.
- the preamble sequence is configured to notify information to the base station apparatus by a plurality of sequences. For example, when 64 types of sequences are prepared, 6-bit information can be indicated to the base station apparatus.
- the physical random access channel is used as an access means for the terminal device to the base station device.
- the terminal apparatus transmits transmission timing adjustment information (timing advance (for timing uplink ()) required for an uplink radio resource request when the physical uplink control channel is not set, or for matching the uplink transmission timing with the reception timing window of the base station apparatus.
- the physical random access channel is used for requesting the base station apparatus (also called Timing Advance; TA). Also, the base station apparatus can request the terminal apparatus to start a random access procedure using the physical downlink control channel.
- the layer 3 message is a message handled in the protocol of the control plane (CP (Control-plane, C-Plane)) exchanged between the terminal device and the RRC (Radio Resource Control) layer of the base station device, and RRC signaling or RRC Can be used interchangeably with message.
- CP Control-plane, C-Plane
- RRC Radio Resource Control
- a protocol for handling user data with respect to the control plane is referred to as a user plane (UP (User-plane, U-Plane)).
- PCFICH Physical control format indication channel
- PHICH Physical hybrid ARQ indicator channel
- PMCH Physical multicast channel
- the communicable range (communication area) of each frequency controlled by the base station apparatus is regarded as a cell.
- the communication area covered by the base station apparatus may have a different width and a different shape for each frequency.
- the area to cover may differ for every frequency.
- a wireless network in which cells having different types of base station apparatuses and different cell radii are mixed in areas of the same frequency or different frequencies to form one communication system is referred to as a heterogeneous network.
- the terminal device operates by regarding the inside of the cell as a communication area.
- a terminal device moves from one cell to another cell, it moves to another appropriate cell by a cell reselection procedure during non-wireless connection (idle state) and by a handover procedure during wireless connection (connected state).
- An appropriate cell is a cell that is generally determined that access by a terminal device is not prohibited based on information specified by a base station device, and the downlink reception quality satisfies a predetermined condition. Indicates the cell to be used.
- the base station apparatus manages a cell, which is an area in which the terminal apparatus can communicate with the base station apparatus, for each frequency.
- One base station apparatus may manage a plurality of cells.
- the cells are classified into a plurality of types according to the size (cell size) of the area communicable with the terminal device. For example, the cell is classified into a macro cell and a small cell.
- a small cell is a cell that generally covers a radius of several meters to several tens of meters.
- the small cell may be classified into a femto cell, a pico cell, a nano cell, or the like depending on the size of the area.
- the cell set to be used for communication with the terminal device among the cells of the base station device is a serving cell (Serving cell),
- a cell that is not used for other communications is referred to as a neighbor cell.
- the terminal device and the base station device aggregate (aggregate) the frequencies (component carriers or frequency bands) of a plurality of different frequency bands (frequency bands) and treat them as one frequency (frequency band) ( (Carrier aggregation) may be applied.
- carrier aggregation there are an uplink component carrier corresponding to an uplink and a downlink component carrier corresponding to a downlink as component carriers.
- a frequency and a frequency band may be used synonymously.
- a terminal device capable of carrier aggregation regards these as a frequency bandwidth of 100 MHz and performs transmission / reception.
- the component carriers to be aggregated may be continuous frequencies, or may be frequencies at which all or part of them are discontinuous.
- the usable frequency band is 800 MHz band, 2 GHz band, and 3.5 GHz band
- one component carrier is transmitted in the 800 MHz band
- another component carrier is transmitted in the 2 GHz band
- another component carrier is transmitted in the 3.5 GHz band. It may be.
- the frequency bandwidth of each component carrier may be a frequency bandwidth (for example, 5 MHz or 10 MHz) narrower than the receivable frequency bandwidth (for example, 20 MHz) of the terminal device, and the aggregated frequency bandwidth may be different from each other.
- the frequency bandwidth is preferably equal to one of the frequency bandwidths of the conventional cell in consideration of backward compatibility, but may be a frequency bandwidth different from the frequency bandwidth of the conventional cell.
- Component carriers that are not backward compatible may be aggregated by carrier aggregation.
- This component carrier having no backward compatibility is also referred to as a new carrier type (NCT).
- NCT new carrier type
- the number of uplink component carriers assigned (set or added) to the terminal device by the base station apparatus is preferably equal to or less than the number of downlink component carriers, but is not limited thereto.
- the terminal device and the base station device manage a cell composed of a certain uplink component carrier and a downlink component carrier that is cell-specifically connected to the uplink component carrier as a primary cell (PCell). Moreover, a terminal device and a base station apparatus manage the cell comprised from component carriers other than a primary cell as a secondary cell (SCell: Secondary cell).
- SCell Secondary cell
- the frequency of the primary cell is referred to as the primary frequency
- the frequency of the secondary cell is referred to as the secondary frequency.
- the terminal device performs paging message reception, broadcast information update detection, initial access procedure, security information setting, and the like in the primary cell, but does not have to be performed in the secondary cell.
- the primary cell and the secondary cell are collectively referred to as a serving cell. That is, when a plurality of component carriers (cells) are aggregated, the terminal device has a plurality of serving cells.
- the activated state is also referred to as an activated state
- the inactivated state is also referred to as a deactivated state.
- the primary cell is not subject to activation and deactivation control (that is, the primary cell is considered to be activated), but the secondary cell is called activation and deactivation. It has a cell state according to the activity.
- the state of the serving cell may be explicitly designated (notified or instructed) by the base station device, or timer information (deactivation timer) that the terminal device counts for each component carrier (cell).
- the state may be changed based on a deactivation timer).
- carrier aggregation is communication by a plurality of serving cells using a plurality of component carriers (frequency bands), and is also referred to as cell aggregation.
- the terminal device may be wirelessly connected to the base station device via a relay station device (or repeater) for each frequency. That is, the base station apparatus of each embodiment of the present invention can be replaced with a relay station apparatus.
- a series of procedures (random access procedures) related to random access in carrier aggregation will be described. There are two random access procedures: a Contention based Random Access (contention based random access) procedure and a Non-contention based Random Access (non-contention based random access) procedure.
- Contention based Random Access Contention based random access
- Non-contention based Random Access non-contention based random access
- the Contention based Random Access procedure is a random access procedure in which preamble sequences transmitted by different terminal devices may collide (contention), and the initial access from a state in which the terminal device is not connected (communication) with the base station device And for scheduling requests for requesting uplink transmission resources from a state in which the terminal apparatus is connected to the base station apparatus.
- the collision of preamble sequences means that a plurality of terminal apparatuses transmit the physical random access channel using the same preamble sequence using the same frequency / time resource. Note that a preamble sequence collision is also referred to as a random access collision.
- Non-contention based Random Access procedure is a random access procedure in which no collision occurs in preamble sequences transmitted by different terminal devices, and the terminal device is connected to the base station device, and uplink synchronization is lost. In this state, it is started by an instruction from the base station apparatus. The start of the Non-contention based Random Access procedure is instructed by an RRC (Radio Resource Control: Layer 3) layer message and control data of the physical downlink control channel PDCCH.
- RRC Radio Resource Control: Layer 3
- the preamble sequence (dedicated preamble) used in the Non-contention-based Random Access procedure is individually notified from the base station apparatus to the terminal apparatus.
- a preamble sequence used in the Contention based Random ⁇ ⁇ Access procedure is selected by the terminal device from a preamble sequence that is not used as an individual preamble, and is randomly selected during random access.
- the number of preamble sequences respectively used in the Contention based Random Access procedure and the Non-contention based Random Access procedure is notified from the base station apparatus.
- the primary cell supports both Non-contention based Random Access procedure and Contention based Random Access procedure.
- a procedure needs to be executed this is referred to as Multi-TA or Multiple TA
- only Non-contention based Random Access procedure is supported in the secondary cell.
- a response (random access response) to the physical random access channel (preamble sequence) transmitted by the terminal device on the uplink of the secondary cell is transmitted from the base station device on the downlink of the primary cell.
- the basic structure (architecture) of dual connectivity will be described.
- the terminal device is connected simultaneously with a plurality of base station devices.
- the plurality of base station apparatuses are composed of a base station apparatus constituting a macro cell and another base station apparatus constituting a small cell.
- the plurality of base station apparatuses are composed of a base station apparatus constituting a small cell and another base station apparatus constituting another small cell.
- a terminal device uses a plurality of cells' radio resources belonging to a plurality of base station devices to connect to a certain base station device, which is called dual connectivity, and a technology for realizing dual connectivity.
- the connection between the terminal device and the plurality of base station devices is described using “use of dual connectivity”, “connection by dual connectivity”, or expressions synonymous with these.
- the baseline of this technology is that the cells used for connection are operated at different frequencies, but the same technology can be used even if the cells are operated at the same frequency.
- Carrier aggregation means that one base station device manages multiple cells, and one base station device can perform centralized control for each cell, and the backbone line between multiple cells is affected by delay. It is different from the connection by the dual connectivity that it is not necessary to consider.
- carrier aggregation is a technology for connecting one terminal device and one base station device via a plurality of cells, whereas dual connectivity is one terminal device and a plurality of base station devices. Are connected via a plurality of cells.
- the terminal device and the base station device can apply a technique applied to carrier aggregation to dual connectivity.
- the terminal device and the base station device have dual technologies such as primary cell and secondary cell management (addition, deletion, change, etc.), measurement methods and measurement event settings corresponding to carrier aggregation, and activation / inactivation. You may apply with respect to the cell connected by connectivity.
- a connection path between a plurality of base station apparatuses constituting cells connected by dual connectivity is called a base station interface.
- the base station interface is also referred to as X2 interface or Xn interface in EUTRA.
- FIG. 8 is a diagram illustrating an example in which the terminal device 1 and the base station device 2 are connected using dual connectivity.
- the terminal device 1 and the base station device 2 (base station device 2-1 and base station device 2-2) are connected via independent cells, and the terminal device 1 is connected to the cell of each base station device 2. Simultaneous reception and / or simultaneous transmission are possible.
- the base station apparatus 2-1 and the base station apparatus 2-2 are connected by a base station interface N10.
- the number of base station apparatuses 2 connected to the terminal apparatus 1 is not limited to two, and the terminal apparatus 1 includes three or more base station apparatuses. 2 can also be connected.
- the terminal device includes two radio frequency circuits (RF # 1, RF # 2), and RF # 1 is received in a certain frequency band (Band # 1). Assume that only (transmission) is supported, and RF # 2 supports reception (transmission) in two different frequency bands (Band # 1, Band # 5).
- RF Radio Frequency
- FIG. 9 shows an example of a combination of frequency bands supported by each radio frequency circuit of the terminal device.
- FIG. 8 shows the number of combinations (RF Band Combinations) in the radio frequency circuit and the frequency bands that can be combined.
- RF Band Combination # 1 means that two or more frequency bands different from Band # 1 can be used.
- RF Band Combination # 2 means that two or more frequency bands of Band # 1 and Band # 5 can be used.
- RF Band Combination # 3 means that communication using one or a plurality of frequency bands of Band # 1 is possible.
- RF Band Combination # 4 means that communication using one or a plurality of frequency bands of Band # 5 is possible.
- the number of frequency bands transmitted and received during carrier aggregation is specified by another parameter.
- FIG. 10 shows an example of the structure of the terminal device capability message configured in the terminal device having the radio frequency circuit of FIG.
- UE Capability Information a band parameter group (BandParameters) including a frequency band (bandEUTRA) supported by each radio frequency circuit (RF) is set for each frequency band combination (BandCombinationParameters).
- bandEUTRA a number for specifying uplink and downlink frequencies and bandwidths that can be used for radio communication between the base station apparatus and the terminal apparatus in the communication system is set.
- parameters other than frequency bands are omitted, but for example, the number of continuous frequency bands that can be aggregated at the time of carrier aggregation, or when communication is performed using a combination of the frequency bands Information such as the number of layers of uplink and downlink MIMO (Multi Input Multi Output) can be set.
- the number of continuous frequency bands that can be aggregated at the time of carrier aggregation may be provided as a value encoded as support class information for carrier aggregation. Then, a list (supported band combination) of all combinations of frequency bands possible in the terminal device is configured as the terminal device capability.
- a band parameter group is a set of frequency bands (bandEUTRA) that can be supported by the terminal device and terminal device capability information related to the frequency band.
- a combination of band parameters that can be supported by the terminal device is a combination of frequency bands (BanaCombinationParameters). Further, (SupportedBandCombination) indicates a list of frequency band combinations that can be supported by the terminal device.
- Band Combination Parameters # 1 includes Band Parameters # 1 and Band Parameters # 2.
- BandParameters # 1 includes at least bandEUTRA # 1
- BandParameters # 2 includes at least bandEUTRA # 1.
- Band Combination Parameters # 2 includes Band Parameters # 3 and Band Parameters # 4.
- BandParameters # 3 includes at least bandEUTRA # 1
- BandParameters # 4 includes at least bandEUTRA # 5.
- Band Combination Parameters # 3 includes Band Parameters # 5.
- BandParameters # 5 includes at least bandEUTRA # 1.
- Band Combination Parameters # 4 includes Band Parameters # 6.
- BandParameters # 5 includes at least bandEUTRA # 5.
- the number of frequency band combinations supported by the terminal device included in the terminal device capability message is equal to the number of frequency band combinations supported by the radio frequency circuit. That is, if the number of frequency band combinations supported by the radio frequency circuit is n (n is a natural number), the number of frequency band combinations (BandCombinationParameters) supported by the terminal device included in the terminal device capability message is n. It becomes.
- a terminal device when a terminal device can support a plurality of uplink transmission timings in a certain frequency band combination, that is, in a certain frequency band combination, it can support a Non-contentioncontentbased Random Access procedure in a secondary cell.
- the terminal apparatus separately sets terminal apparatus capability information (SupportedBandCombination 2) that lists whether or not a plurality of uplink transmission timings are supported for combinations of frequency bands that can be supported by the terminal apparatus.
- FIG. 11 is a diagram illustrating an example of a message structure of the terminal device capability for setting whether to support transmission timings of a plurality of uplinks.
- Information (parameters) indicating whether or not a plurality of uplink transmission timings are supported is set corresponding to each combination of frequency bands that can be supported by the terminal device.
- information indicating whether or not a plurality of uplink transmission timings are supported corresponds to a combination of frequency bands listed in the terminal device capability message. That is, if the number of combinations of frequency bands listed in the terminal device capability message is n (n is a natural number), information indicating whether or not there is support for a plurality of uplink transmission timings included in the terminal device capability message The number of (multiple Timing Advance) is also n, and the order included in the list is the same. That is, when Band Combination Parameters # 1 is entered at the beginning of the list in Supported Band Combination, Band Combination Parameters # 1 needs to be entered at the beginning of the list also in Supported Band Combination 2.
- the terminal device Since these terminal device capability information rarely changes instantaneously or dynamically, the terminal device is based on the capability information of the terminal device statically set inside a nonvolatile memory or the like as a system parameter.
- the terminal device capability is configured, and when connected to the base station device or in response to a request from the base station device, a terminal device capability message including the necessary terminal device capability is configured (generated) as an RRC message, and the base station device Send to.
- the base station apparatus can receive the terminal apparatus capability message and appropriately notify the setting information that can be supported in the radio frequency circuit of the terminal apparatus based on the notified terminal apparatus capability.
- FIG. 1 is a block diagram showing an example of a terminal device 1 according to the first embodiment of the present invention.
- the terminal device 1 includes a reception antenna unit R01, a reception unit 101, a demodulation unit 102, a decoding unit 103, a reception data control unit 104, a physical layer control unit 105, a transmission data control unit 106, a coding unit 107, a modulation unit 108, a transmission Unit 109, transmission antenna unit T01, and radio resource control unit 110.
- the “unit” in the figure is an element that realizes the function and each procedure of the terminal device 1 that is also expressed by terms such as section, circuit, component device, device, and unit.
- the radio resource control unit 110 is an RRC (Radio Resource Control) layer that performs state control, measurement control and report control of the terminal device 1, control of common control information and individual control information, connection control, mobility control, radio resource control, and the like. It is a block that executes each function.
- the reception data control unit 104 and the transmission data control unit 106 execute functions in a MAC (Medium Access Control) layer, a RLC (Radio Link Control) layer, and a PDCP (Packet Data Convergence Protocol) layer that manage the data link layer. It is a block to do.
- MAC Medium Access Control
- RLC Radio Link Control
- PDCP Packet Data Convergence Protocol
- the terminal device 1 is configured to receive a plurality of frequencies (frequency bands, frequency bandwidths) or simultaneous reception of cells by carrier aggregation and / or dual connectivity (reception unit 101, demodulation unit 102). , Decoding section 103) and a plurality of transmission system blocks (coding section 107, modulation section 108, transmission section 109) to support simultaneous transmission of a plurality of frequencies (frequency bands, frequency bandwidths) or cells. There may be.
- the terminal device 1 may be configured to include a plurality of reception data control units 104, physical layer control units 105, transmission data control units 106, and radio resource control units 110.
- the reception data control unit 104 and the transmission data control unit 106 are a plurality of base station devices 2 connected by dual connectivity (may be classified as a secondary base station device cell group and a connectivity group). You may comprise so that it may respond
- reception data control information is input from the radio resource control unit 110 to the reception data control unit 104, and physical layer control information that is a control parameter for controlling each block is input to the physical layer control unit 105. Is entered.
- the physical layer control information is information including parameter settings necessary for wireless communication control of the terminal device 1 configured by reception control information and transmission control information.
- the physical layer control information is set by radio connection resource settings, cell-specific broadcast information, system parameters, or the like transmitted individually (dedicated) from the base station apparatus 2 to the terminal apparatus 1, and the radio resource control unit 110 Input to the physical layer control unit 105 as necessary.
- the physical layer control unit 105 appropriately inputs reception control information that is control information related to reception to the reception unit 101, the demodulation unit 102, and the decoding unit 103.
- the reception control information includes information such as reception frequency band information, reception timing related to physical channels and physical signals, multiplexing methods, and radio resource arrangement information as downlink scheduling information.
- the received data control information is downlink control information including secondary cell deactivation timer information, DRX (Discontinuous Reception) control information, multicast data reception information, downlink retransmission control information, and the like, MAC layer, RLC layer , Control information regarding each downlink in the PDCP layer is included.
- the received signal is received by the receiving antenna unit R01 and input to the receiving unit 101.
- the receiving unit 101 receives a signal from the base station apparatus 2 in accordance with the frequency and frequency band specified by the reception control information.
- the receiving unit 101 may include an RF circuit.
- the received signal is input to the demodulation unit 102.
- the demodulator 102 demodulates the signal.
- Demodulation section 102 inputs the demodulated signal to decoding section 103.
- Decoding section 103 decodes the input signal and inputs each decoded data (downlink data and downlink control data) to reception data control section 104.
- the MAC control element transmitted from the base station apparatus 2 together with each data is also decoded by the decoding unit 103 and input to the reception data control unit 104.
- the received data control unit 104 performs control of the physical layer control unit 105 based on the received MAC control element, buffering control of each decoded data, error correction control (HARQ) of retransmitted data, and the like. Each data input to the reception data control unit 104 is input (transferred) to the radio resource control unit 110.
- HARQ error correction control
- transmission data control information is input from the radio resource control unit 110 to the transmission data control unit 106, and the physical layer control unit 105 is a physical layer that is a control parameter for controlling each block. Control information is input.
- the physical layer control unit 105 appropriately inputs transmission control information, which is control information related to transmission, to the encoding unit 107, the modulation unit 108, and the transmission unit 109.
- the transmission control information includes information such as encoding information, modulation information, transmission frequency band information, transmission timing related to physical channels and physical signals, multiplexing method, and radio resource arrangement information as uplink scheduling information.
- the transmission data control information includes uplink including DTX (Discontinuous Transmission) control information, random access setting information, uplink shared channel information, logical channel priority information, resource request setting information, cell group information, and uplink retransmission control information. This is link control information.
- the radio resource control unit 110 may set a plurality of random access setting information respectively corresponding to a plurality of cells in the transmission data control unit 106. Further, the radio resource control unit 110 manages transmission timing adjustment information and a transmission timing timer used for adjustment of uplink transmission timing, and states of uplink transmission timing (transmission for each cell (or for each cell group and for each TA group)). (Timing adjustment state or transmission timing non-adjustment state).
- the transmission timing adjustment information and the transmission timing timer are included in the transmission data control information.
- the transmission data control unit 106 supports the uplink transmission timing of each of a plurality of cells (or cell groups or TA groups).
- the resource request setting information includes at least maximum transmission counter setting information and radio resource request prohibition timer information.
- the radio resource control unit 110 may set a plurality of resource request setting information respectively corresponding to a plurality of cells in the transmission data control unit 106.
- Transmission data (uplink data and uplink control data) generated in the terminal device 1 is input from the radio resource control unit 110 to the transmission data control unit 106 at an arbitrary timing. At this time, the transmission data control unit 106 calculates the amount of input transmission data (uplink buffer amount). The transmission data control unit 106 has a function of determining whether the input transmission data is data belonging to the control plane or data belonging to the user plane.
- the transmission data control unit 106 stores the transmission data in an uplink buffer in the transmission data control unit 106 (not shown). Then, the transmission data control unit 106 determines whether radio resources necessary for transmitting the input transmission data are allocated to the terminal device 1. Based on the radio resource allocation, the transmission data control unit 106 uses the physical uplink shared channel PUSCH, the radio resource request (scheduling request (SR)) using the physical uplink control channel PUCCH, or the radio using the physical random access channel. One of the resource requests is selected, and control processing for transmitting the selected channel is requested to the physical layer control unit 105.
- SR scheduling request
- the encoding unit 107 corresponds to the allocated radio resources in accordance with instructions from the radio resource control unit 110.
- the transmission data is acquired from the uplink buffer, encoded, and input to the modulation unit 108.
- the encoding unit 107 performs the radio resource request by the physical uplink control channel according to the instruction of the radio resource control unit 110. Control data necessary for transmission is encoded and input to the modulation unit 108.
- the encoding unit 107 instructs the transmission data control unit 106 to start a random access procedure. At this time, encoding section 107 generates a preamble sequence that is transmitted on the physical random access channel based on random access setting information input from transmission data control section 106. Also, the encoding unit 107 appropriately encodes each data according to the transmission control information and inputs the data to the modulation unit 108.
- Modulation section 108 performs appropriate modulation processing based on the channel structure for transmitting each encoded data.
- the transmission unit 109 maps each modulated data to the frequency domain, converts the frequency domain signal into a time domain signal, and amplifies the power on a carrier having a predetermined frequency.
- the transmission unit 109 also adjusts the uplink transmission timing according to the transmission timing adjustment information for each cell (also for each cell group and each TA group) input from the radio resource control unit 110.
- the transmission unit 109 may include an RF circuit.
- the transmission signal output from the transmission unit 109 is transmitted from the transmission antenna unit T01.
- the physical uplink shared channel in which the uplink control data is arranged can include, for example, a layer 3 message (radio resource control message; RRC message) in addition to the user data.
- RRC message radio resource control message
- FIG. 1 other constituent elements of the terminal device 1 and transmission paths of data (control information) between the constituent elements are omitted, but a plurality of other functions necessary for operating as the terminal device 1 are provided. It is clear that this block has as a component. For example, a NAS layer unit that performs control with the core network and an application layer unit exist above the radio resource control unit 110.
- the reception antenna unit R01 or the transmission antenna unit T01 is typically a planar multiband antenna, but is configured by adopting any antenna suitable for the terminal device capability, shape, purpose, etc. of the terminal device 1. can do. For example, it may be configured by a plurality of antenna units, may have directivity, or the reception antenna unit R01 and the transmission antenna unit T01 may be integrated.
- each control information, downlink control Data, downlink data, uplink control data, and uplink data relate to the base station apparatus 2 to which each block corresponds.
- the reception data control unit 104 corresponding to the base station device 2-1 receives the signal received from the base station device 2-1, but the reception data control unit 104 corresponding to the base station device 2-2. The signal received from the base station device 2-1 is not input.
- FIG. 2 is a block diagram showing an example of the base station apparatus 2 according to the first embodiment of the present invention.
- This base station apparatus includes a reception antenna unit R02, a reception unit 201, a demodulation unit 202, a decoding unit 203, a reception data control unit 204, a physical layer control unit 205, a transmission data control unit 206, a coding unit 207, a modulation unit 208, a transmission Unit 209, transmission antenna unit T02, radio resource control unit 210, and network signal transmission / reception unit 211.
- the “unit” in the figure is an element that executes the functions of the base station apparatus 2 and the procedures, which are also expressed by terms such as section, circuit, component apparatus, device, and unit.
- the radio resource control unit 210 is a block that executes each function of an RRC (Radio Resource Control) layer that performs radio resource control of the base station apparatus 2.
- RRC Radio Resource Control
- the reception data control unit 204 and the transmission data control unit 206 execute functions in a MAC (Medium Access Control) layer, an RLC (Radio Link Control) layer, and a PDCP (Packet Data Convergence Protocol) layer that manage the data link layer. It is a block to do.
- MAC Medium Access Control
- RLC Radio Link Control
- PDCP Packet Data Convergence Protocol
- the base station apparatus 2 receives a plurality of frequencies (frequency band, frequency bandwidth) by carrier aggregation and / or dual connectivity in order to support a reception system block (reception unit 201, demodulation unit 202, decoding unit 203). ), And a plurality of transmission system blocks (encoding unit 207, modulation unit 208, and transmission unit 209).
- the reception data control unit 204, the physical layer control unit 205, the transmission data control unit 206, the radio resource control unit 210, and the network signal transmission / reception unit 211 may be provided.
- the radio resource control unit 210 inputs downlink data and downlink control data to the transmission data control unit 206.
- the transmission data control unit 206 inputs the MAC control element and each data (downlink data or downlink control data) to the encoding unit 207.
- the encoding unit 207 encodes the input MAC control element and each data, and inputs the encoded data to the modulation unit 208.
- Modulation section 208 modulates the encoded signal.
- the transmission unit 209 maps the input signal to the frequency domain, converts the frequency domain signal into a time domain signal, and amplifies the power on a carrier wave having a predetermined frequency.
- the transmission unit 209 may include an RF circuit.
- the transmission signal output from the transmission unit 209 is transmitted from the transmission antenna unit T02.
- the physical downlink shared channel in which downlink control data is arranged typically constitutes a layer 3 message (RRC message).
- the received signal is received by the receiving antenna unit R02 and input to the receiving unit 201.
- the receiving unit 201 converts a signal received from the terminal device 1 into a baseband digital signal. When a plurality of cells having different transmission timings are set for the terminal device 1, the receiving unit 201 receives signals at different timings for each cell (also for each cell group and each TA group). The digital signal converted by the reception unit 201 is input to the demodulation unit 202 and demodulated.
- the signal demodulated by the demodulator 202 is then input to the decoder 203.
- the decoding unit 203 decodes the input signal and inputs each decoded data (uplink data and uplink control data) to the reception data control unit 204. Further, the MAC control element transmitted from the terminal device 1 together with each data is also decoded by the decoding unit 203 and input to the reception data control unit 204.
- the received data control unit 204 controls the physical layer control unit 205 based on the received MAC control element, buffers each decoded data, and performs error correction control (HARQ) of the retransmitted data.
- HARQ error correction control
- Each data input to the reception data control unit 204 is input (transferred) to the radio resource control unit 210.
- the physical layer control information necessary for control of each block is information including parameter settings necessary for radio communication control of the base station apparatus 2 configured by reception control information and transmission control information.
- the physical layer control information is set by a higher-level network device (MME, gateway device (SGW), OAM, etc.) and system parameters, and the radio resource control unit 210 inputs the control unit 204 as necessary.
- the physical layer control unit 205 inputs physical layer control information related to transmission to each block of the encoding unit 207, modulation unit 208, and transmission unit 209 as transmission control information, and receives physical layer control information related to reception as reception control information. Are appropriately input to each block of the receiving unit 201, the demodulating unit 202, and the decoding unit 203.
- the received data control information includes control information related to the uplink of the terminal device 1 for each of the MAC layer, RLC layer, and PDCP layer of the base station device 2.
- the transmission data control information includes control information related to the downlink of the terminal device 1 for each of the MAC layer, RLC layer, and PDCP layer of the base station device 2. That is, the reception data control information and the transmission data control information are set for each terminal device 1.
- the network signal transmission / reception unit 211 transmits (transfers) or receives a control message or user data between the base station devices 2 or between the upper network device (MME, SGW) and the base station device 2.
- MME mobile phone
- SGW network device
- FIG. 2 the components of other base station apparatus 2 and the transmission path of data (control information) between the components are omitted, but other functions necessary for operating as base station apparatus 2 are omitted. It is clear that it has a plurality of blocks as constituent elements. For example, a radio resource management unit and an application layer unit exist above the radio resource control unit 210.
- the reception antenna unit R02 or the transmission antenna unit T02 is typically a planar multiband antenna, but is configured by using any antenna suitable for the transmission capability, shape, purpose, etc. of the base station apparatus 2. can do. For example, it may be configured by a plurality of antenna units, may have directivity, or the reception antenna unit R02 and the transmission antenna unit T02 may be integrated. Further, the receiving antenna unit R02 and the transmitting antenna unit T02 (which may include the receiving unit 201 and the transmitting unit 209) are configured as one unit (Remote Radio Head: RRH) independent from the base station device 2, and the base station device It may be arranged at a position different from 2.
- RRH Remote Radio Head
- FIG. 3 shows the communication supported by each combination of frequency bands supported by the terminal device 1 in order to indicate to the base station device 2 that the terminal device 1 supports the communication method including dual connectivity. It is a figure which shows an example of the structure of a terminal device capability message in the case of notifying several terminal device capability information (parameter) based on a system.
- support means that the hardware and / or software necessary for realizing the function (or communication method) is installed in the terminal device 1 and conformity tests (standards) defined in 3GPP. It means that it passed the certification test (Conformance Test).
- the terminal device capability information (parameter) indicating that the terminal device 1 supports a plurality of communication methods including dual connectivity, presence / absence of transmission support for the physical uplink control channel in the secondary cell (pucchOnScell) and Information indicating whether or not to execute a plurality of data transfer controls is added.
- the information indicating whether or not to execute a plurality of data transfer controls means information indicating the presence or absence (multiple MAC-Config (or dualMAC-Config)) of a plurality of MAC layer functions (Multiple MAC (Dual MAC)).
- the multiple support of the MAC layer function means that each function executed by the MAC layer when the primary cell and the secondary cell belong to different groups (cell group, base station apparatus group, connectivity group). More specifically, the buffer amount used for the buffer status report (buffer status report) in the MAC layer is calculated independently for each group.
- the line resource request procedure is performed independently for each group, means and the like.
- the terminal device capability information is listed for each combination of frequency bands (Band Combination Parameters # 1 to #n) supported by the terminal device 1, and included in the terminal device capability message as an additional terminal device capability (Supported Band Combination 3).
- the plurality of terminal device capability information included in SupportedBandCombination 3 is equal to the number of frequency band combinations of terminal device 1 set in SupportedBandCombination, and the order thereof also coincides. That is, if the number of combinations of frequency bands listed in the terminal device capability message is n (n is a natural number), a plurality of terminal device capability information (pucchOnScell, multipleMAC-Config) included in the terminal device capability message. The number is also n (n sets), and the order included in the list is the same.
- FIG. 4 is a diagram for explaining the relationship between a plurality of terminal device capability information set in the terminal device capability message in FIG. 3 and communication methods that can be supported by the terminal device 1.
- a check mark (dot) in the figure indicates that the terminal device 1 supports the capability indicated by the terminal device capability information
- a horizontal bar mark (-) in the diagram indicates the others.
- a communication method using carrier aggregation (case 1) and a communication method using carrier aggregation and a plurality of uplink transmission timings (Multi-TA).
- Case 2 communication method using carrier aggregation and physical uplink control channel transmission (SCell PUCCH) in secondary cell (Case 3), carrier aggregation and multiple uplink transmission timings (Multi-TA) ) And a physical uplink control channel transmission (SCell PUCCH) in the secondary cell (case 4) and a communication method using dual connectivity (case 5).
- the terminal device 1 can notify the base station device 2 about the case 1 and the case 2 using the conventional terminal device capability information (Band Combination Parameters, multiple Timing Advance).
- Case 3 to Case 5 respectively correspond to communication methods that can be notified to the base station device 2 in the terminal device 1 of the present embodiment.
- the base station apparatus 2 to which the terminal apparatus 1 can be connected is always one, but the transmission setting of the physical uplink control channel PUCCH for the secondary cell can be set for the terminal apparatus 1. It shows that.
- the terminal device 1 supports the setting (procedure) related to the conventional carrier aggregation, but does not support the setting (procedure) related to the dual connectivity.
- the terminal device 1 indicates that the setting (procedure) necessary for the transmission timings of a plurality of uplinks is not supported.
- the transmission setting of the physical uplink control channel PUCCH for the secondary cell is, for example, a part or all of the setting for transmitting ACK / NACK or CQI in the secondary cell and the setting for the radio resource request procedure in the secondary cell. Including.
- the settings related to dual connectivity include, for example, a setting for supporting a Contention based Random Access procedure in the secondary cell, a setting for supporting a DRX procedure different from the primary cell in the secondary cell, and a radio link monitoring in the secondary cell.
- Configuration settings for classifying the serving cell as a secondary base station device cell group or connectivity group, and settings related to functions of multiple MAC layers and RLC layers corresponding to the secondary base station device cell group. is there.
- case 4 As with case 3, there is always only one base station device 2 to which the terminal device 1 can be connected, but the transmission setting of the physical uplink control channel PUCCH for the secondary cell can be set for the terminal device 1.
- This also indicates that communication based on a plurality of uplink transmission timings is supported during carrier aggregation.
- the terminal device 1 supports the setting related to the conventional carrier aggregation, but does not support the setting related to the dual connectivity.
- the terminal device 1 indicates that it supports a plurality of uplink transmission timings during carrier aggregation.
- Case 5 indicates that the terminal device 1 supports all functions necessary for dual connectivity. That is, the terminal device 1 can perform carrier aggregation in a certain combination of frequency bands, can communicate at a plurality of uplink transmission timings in the combination of frequency bands, and has a physical uplink control channel for the secondary cell. When transmission is possible and a plurality of MAC layer functions can be supported, information indicating that support is possible is set for all related terminal device capability information.
- the information indicating whether or not to execute a plurality of independent data transfer controls for each group is exemplified as information indicating a plurality of MAC layer functions. It is also possible to use terminal device capability information indicating meaning instead.
- the terminal device 1 may use information (multiple L2-Config) indicating that a plurality of L2 functions corresponding to the base station device 2 are supported.
- the terminal device 1 may use information (SCG-Config) indicating that the cell group (secondary base station device cell group: SCG) of the base station device 2 including only the secondary cell is supported.
- the terminal device 1 may use information (Supported Multiple Connection) indicating that connection with a plurality of base station devices 2 is supported.
- the terminal device 1 and the base station device 2 in the first embodiment can associate the terminal device capability of the terminal device 1 with the communication method supported by the terminal device 1.
- the terminal device 1 can notify the base station device 2 for each frequency band combination about the terminal device capability indicating communication system support including dual connectivity. This is an efficient notification method when there is a combination of frequency bands that do not support a certain communication method. For example, in a certain frequency band combination, the terminal device 1 supports communication by carrier aggregation, but is efficient when communication by dual connectivity is not supported. Moreover, the base station apparatus 2 of this embodiment can know the communication system which the terminal device 1 supports for every combination of frequency bands based on the information regarding the terminal device capability notified from the terminal device 1.
- the terminal device 1 uses the plurality of terminal device capability information to base the communication method and the supported function supported by the terminal device 1 on each frequency band combination basis.
- the station apparatus 2 can be notified appropriately, and the optimal communication method can be selected by the base station apparatus 2.
- the base station apparatus 2 since the base station apparatus 2 is notified of the terminal apparatus capability based on the communication method supported by the terminal apparatus 1 for each combination of frequency bands, the base station apparatus 2 is notified of the traffic volume and the base station apparatus 2. It is possible to select an efficient communication method in accordance with the cell arrangement and the like and specify it appropriately.
- a plurality of functions of the terminal device 1 related to dual connectivity are newly set for each combination of frequency bands. Thereby, it is possible to notify a communication method that can be supported for each combination of frequency bands.
- the combination of frequency bands to be supported depends on the hardware configuration of the terminal device 1, but on the other hand, dual connectivity, multiple uplink transmission timings (Multi-TA), and physical uplink control in the secondary cell Communication methods such as channel transmission (SCell PUCCH) may not depend on the hardware configuration.
- Multi-TA multiple uplink transmission timings
- SCell PUCCH channel transmission
- the terminal device 1 and the base station device 2 in the second embodiment may have the same configurations as shown in FIGS.
- FIG. 5 shows a plurality of terminal device capability information (parameters) based on the supported communication method in order to indicate to the base station device 2 that the terminal device 1 supports the communication method including dual connectivity. It is a figure which shows an example of the structure of a terminal device capability message in the case of notifying.
- the terminal device capability information (parameter) indicating that the terminal device 1 supports a plurality of communication methods including dual connectivity, the presence / absence of transmission support of the physical uplink control channel in the secondary cell (pucchOnScell) and
- information indicating whether or not a plurality of MAC layer functions (Multiple MAC (Dual MAC)) is present (MultipleMAC-Config (dualMAC-Config)) is added.
- the terminal device capability information is applied to all combinations of frequency bands supported by the terminal device 1.
- the terminal device 1 includes the terminal device capability information in a terminal device capability message and transmits it to the base station device 2.
- the terminal apparatus 1 When the terminal apparatus 1 supports transmission of the physical uplink control channel in the secondary cell (pucchOnScell value is Supported), the terminal apparatus 1 simultaneously performs carrier aggregation in all frequency band combinations supported by the terminal apparatus 1. 4 shows that the communication method (Case 3 in FIG. 4) using transmission of the physical uplink control channel (SCell PUCCH) in the secondary cell is supported.
- the terminal device 1 uses carrier aggregation, a plurality of uplink transmission timings (Multi-TA), and a secondary cell. It shows that the communication method (Case 4 in FIG. 4) using the physical uplink control channel transmission (SCell PUCCH) is supported.
- SCell PUCCH physical uplink control channel transmission
- the terminal device 1 supports a plurality of functions of the MAC layer (the value of multipleMAC-Config is Supported), the communication method using dual connectivity in all frequency band combinations supported by the terminal device 1 ( It shows that case 5) of FIG. 4 is supported.
- the terminal device 1 is a combination of frequency bands that do not support a plurality of uplink transmission timings (Multi-TA) even when supporting a plurality of MAC layer functions (multiple MAC-Config value is Supported). May indicate that a communication method using dual connectivity is not supported. Further, the terminal device 1 may indicate that a communication method using dual connectivity is not supported in a combination of frequency bands within a frequency.
- Multi-TA uplink transmission timings
- multiple MAC-Config value is Supported
- the terminal device 1 when the terminal device 1 supports a plurality of MAC layer functions (multiple MAC-Config value is Supported), the terminal device 1 uses a frequency band of a different frequency that supports a plurality of uplink transmission timings (Multi-TA). In combination, it may be shown that a communication method using dual connectivity (Case 5 in FIG. 4) is supported.
- the terminal device 1 and the base station device 2 according to the second embodiment are configured so that the terminal device 1 has the terminal device capability and the communication method supported by the terminal device 1 according to the first embodiment. Can be associated with a smaller amount of information.
- the terminal device 1 of the present embodiment can notify the base station device 2 of the terminal device capability indicating communication system support including dual connectivity, independently of the combination of frequency bands. This is an efficient notification method when the communication method supported by the terminal device 1 can be commonly applied to combinations of frequency bands. Further, the base station apparatus 2 according to the present embodiment can know the communication method supported by the terminal apparatus 1 based on the information regarding the terminal apparatus capability notified from the terminal apparatus 1.
- the terminal device 1 uses the plurality of terminal device capability information to indicate the communication method supported by the terminal device 1 and the supported function to the base station device 2. It is possible to notify appropriately, and it is possible to cause the base station apparatus 2 to select an optimal communication method. In addition, since the base station apparatus 2 is notified of the terminal apparatus capability based on the communication method supported by the terminal apparatus 1, the base station apparatus 2 depends on the traffic volume, the cell arrangement of the base station apparatus 2, and the like. A highly efficient communication method can be selected and designated as appropriate.
- the terminal device 1 and the base station device 2 in the third embodiment may have the same configuration as shown in FIG. 1 and FIG.
- FIG. 6 shows a plurality of terminal device capability information (parameters) based on a supported communication method in order to indicate to the base station device 2 that the terminal device 1 supports a communication method including dual connectivity. It is a figure which shows an example of the structure of a terminal device capability message in the case of notifying.
- the physical uplink control channel is transmitted to each of the plurality of base station apparatuses 2 as terminal apparatus capability information (parameter) indicating that the terminal apparatus 1 supports a plurality of communication methods including dual connectivity.
- Terminal apparatus capability information (parameter) indicating that the terminal apparatus 1 supports a plurality of communication methods including dual connectivity.
- Information indicating whether it is possible is added. In other words, this information indicates whether the physical uplink control channel can be transmitted in the secondary cell in the carrier aggregation, or whether the physical uplink control channel is in the secondary cell in the carrier aggregation and the secondary in the dual connectivity. Indicates whether transmission is possible in the cell.
- terminal device capability information may be set for each combination of frequency bands supported by the terminal device 1 as in the first embodiment.
- one terminal device capability information may be applied to all combinations of frequency bands supported by the terminal device 1.
- a value that can be taken by the terminal device capability information (pucchOnScell-Connectivity)
- a value for example, Single
- a secondary A value for example, Dual
- FIG. 7 is a diagram for explaining a relationship between a plurality of terminal device capability information set in the terminal device capability message in FIG. 6 and a communication method that can be supported by the terminal device 1. With respect to FIG. 7, differences from the contents shown in FIG. 4 will be described below.
- Case 3 to Case 5 respectively correspond to communication methods that can be notified to the base station device 2 in the terminal device 1 of the present embodiment.
- the terminal device 1 When the terminal device 1 does not support a function for transmitting a physical uplink control channel to a plurality of base station devices 2 (pucchOnScell-Connectivity value is Single), the terminal device 1 supports it. In all combinations of frequency bands, it is shown that carrier aggregation is performed, and at the same time, a communication method (case 3 in FIG. 7) using physical uplink control channel transmission (SCell PUCCH) in the secondary cell is supported.
- SCell PUCCH physical uplink control channel transmission
- the terminal device 1 uses carrier aggregation, a plurality of uplink transmission timings (Multi-TA), and a secondary cell. It shows that the communication method (Case 4 in FIG. 7) using the physical uplink control channel transmission (SCell PUCCH) is supported.
- SCell PUCCH physical uplink control channel transmission
- the terminal device 1 supports a function for transmitting a physical uplink control channel to each of a plurality of base station devices 2 (pucchOnScell-Connectivity value is Dual), the terminal device 1 supports It shows that a communication method using dual connectivity (Case 5 in FIG. 7) is supported in all combinations of frequency bands.
- the terminal apparatus 1 supports a plurality of base station apparatuses 2 for transmitting a physical uplink control channel, respectively (even if the value of pucchOnScell-Connectivity is Dual). It may be indicated that a communication method using dual connectivity is not supported in a combination of frequency bands that do not support uplink transmission timing (Multi-TA). Further, the terminal device 1 may indicate that a communication method using dual connectivity is not supported in a combination of frequency bands within a frequency.
- terminal device capability information of the present embodiment information indicating whether a physical uplink control channel can be transmitted to each of the plurality of base station devices 2 (pucchOnScell-Connectivity) is exemplified. Terminal device capability information indicating other meanings can be used instead.
- the terminal device 1 may use information (pucchOnScellGroup) indicating a cell group capable of transmitting the physical uplink control channel.
- Information (pucchOnScellGroup) indicating a cell group capable of transmitting the physical uplink control channel.
- Indicating that the transmission of the physical uplink control channel in the secondary cell is supported by the cell group of the base station measure 2 (also referred to as secondary base station apparatus (SeNB)) of the small cell
- a value eg, SCG
- the terminal device 1 and the base station device 2 in the third exemplary embodiment have the terminal device capability information of the terminal device 1 and the communication method supported by the terminal device 1 as one terminal device capability information. Can be associated with each other.
- the terminal device 1 of the present embodiment can notify the base station device 2 of the terminal device capability indicating communication system support including dual connectivity, independently of the combination of frequency bands. This is an efficient notification method when the communication method supported by the terminal device 1 can be commonly applied to combinations of frequency bands. Further, the base station apparatus 2 according to the present embodiment can know the communication method supported by the terminal apparatus 1 based on the information regarding the terminal apparatus capability notified from the terminal apparatus 1.
- the terminal device 1 uses the single terminal device capability information to indicate the communication method supported by the terminal device 1 and the supported functions to the base station device 2. It is possible to notify appropriately, and it is possible to cause the base station apparatus 2 to select an optimal communication method. In addition, since the base station apparatus 2 is notified of the terminal apparatus capability based on the communication method supported by the terminal apparatus 1, the base station apparatus 2 depends on the traffic volume, the cell arrangement of the base station apparatus 2, and the like. A highly efficient communication method can be selected and designated as appropriate.
- terminal device capability information corresponding to may be added.
- the terminal device 1 may additionally transmit terminal device capability information indicating whether bearer splitting is possible, or any terminal device capability information ( (Or a combination thereof) may be transmitted instead.
- the terminal device 1 may additionally transmit a terminal device capability indicating that it corresponds to an architecture capable of bearer splitting, or any terminal device capability information (or a combination thereof). You may send instead of.
- the terminal device capability indicating the architecture indicates that one of the first architecture that does not support the bearer split and the second architecture that supports the bearer split, or both are supported.
- the terminal device 1 may add terminal device capability information corresponding to this function. For example, in the first to third embodiments, the terminal device 1 additionally transmits terminal device capability information indicating whether it is possible to aggregate resources of the FDD band cell and the TDD band cell. Alternatively, it may be transmitted instead of any terminal device capability information (or a combination thereof).
- the uplink transmission scheme can be applied to both communication systems of the FDD (frequency division duplex) scheme and the TDD (time division duplex) scheme.
- the names of the parameters and events shown in the embodiments are referred to for convenience of explanation, and even if the names actually applied differ from the names of the embodiments of the present invention, It does not affect the gist of the invention claimed in the embodiments of the invention.
- connection used in each embodiment is not limited to a configuration in which a certain device and another certain device are directly connected using a physical line, and is logically connected. And a configuration in which wireless connection is performed using a wireless technology.
- the terminal device 1 is not only a portable or movable mobile station device, but also a stationary or non-movable electronic device installed indoors or outdoors, such as AV equipment, kitchen equipment, cleaning / washing equipment. Including air conditioning equipment, office equipment, vending machines, other daily life equipment and measuring equipment, in-vehicle devices, wearable equipment and healthcare equipment that can be worn, etc. Further, the terminal device 1 is not only for person-to-person or person-to-device communication, but also for device-to-device communication (Machine Type Communication, machine type communication) and device-to-device communication (Device to Device Communication; D2D). Used.
- the terminal device 1 is also referred to as a user terminal, a mobile station device, a communication terminal, a mobile device, a terminal, a UE (User Equipment), and an MS (Mobile Station).
- the base station apparatus 2 is also referred to as a radio base station apparatus, a base station, a radio base station, a fixed station, an NB (NodeB), an eNB (evolved NodeB), a BTS (Base Transceiver Station), and a BS (Base Station).
- the base station apparatus 2 is referred to as NB in UMTS defined by 3GPP, and is referred to as eNB in EUTRA and Advanced EUTRA.
- the terminal device 1 in UMTS, EUTRA, and Advanced EUTRA defined by 3GPP is referred to as a UE.
- each part of the terminal device 1 and the base station device 2 or a method, means, or algorithm step for realizing a part of these functions will be specifically described using a functional block diagram. However, they can be directly embodied by hardware, software modules executed by a processor, or a combination thereof.
- the terminal device 1 and the base station device 2 have displays other than the configuration of the block diagram described above, such as a power supply device that supplies power to the terminal device 1 and the base station device 2, a battery, a liquid crystal display, etc. It is composed of a device, a display driving device, a memory, an input / output interface and input / output terminal, a speaker, and other peripheral devices.
- Computer-readable media includes both communication media and computer recording media including media that facilitate carrying a computer program from one place to another.
- One or more instructions or codes are recorded on a computer-readable recording medium, and one or more instructions or codes recorded on the recording medium are read into a computer system and executed, thereby executing the terminal device 1 or the base.
- the station device 2 may be controlled.
- the “computer system” includes an OS and hardware such as peripheral devices.
- a program that operates in the terminal device 1 and the base station device 2 according to each embodiment of the present invention is a program that controls a CPU or the like (a computer is installed) so as to realize the functions of the above-described embodiments according to each embodiment of the present invention.
- Program to function Information handled by these devices is temporarily stored in the RAM at the time of processing, then stored in various ROMs and HDDs, read out by the CPU, and corrected and written as necessary.
- the “computer-readable recording medium” refers to a semiconductor medium (eg, RAM, nonvolatile memory card, etc.), an optical recording medium (eg, DVD, MO, MD, CD, BD, etc.), a magnetic recording medium (eg, , A magnetic tape, a flexible disk, etc.) and a storage device such as a disk unit built in a computer system.
- 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 for realizing a part of the above-described functions, and further, may be realized by combining the above-described functions with a program already recorded in a computer system. good.
- each functional block or various features of the terminal device 1 and the base station device 2 used in each of the above embodiments is a general-purpose processor, a digital signal processor designed to execute the functions described in this specification.
- DSP digital signal processor
- ASIC application specific integrated circuit
- IC general purpose integrated circuit
- FPGA field programmable gate array signal
- DSP digital signal processor
- discrete gate or transistor logic discrete hard It can be implemented or implemented by a wear component, or a combination thereof.
- the general purpose processor may be a microprocessor, but instead the processor may be a conventional processor, controller, microcontroller, or state machine.
- the general-purpose processor or each circuit described above may be configured by a digital circuit or an analog circuit.
- the processor may also be implemented as a combination of computing devices. For example, a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors connected to a DSP core, or a combination of other such configurations.
- the present invention can be applied to mobile phones, personal computers, tablet computers, and the like.
- Terminal device 2 2-1, 2-2 Base station device 101, 201 Receiving unit 102, 202 Demodulating unit 103, 203 Decoding unit 104, 204 Received data control unit 105, 205 Physical layer control unit 106, 206 Transmission data control Unit 107, 207 Encoding unit 108, 208 Modulation unit 109, 209 Transmission unit 110, 210 Radio resource control unit 211 Network signal transmission / reception unit R01, R02 Reception antenna unit T01, T02 Transmission antenna unit
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Abstract
Description
本願は、2013年12月26日に、日本に出願された特願2013-269084号に基づき優先権を主張し、その内容をここに援用する。
EUTRAおよびAdvanced EUTRAで使用される主な物理チャネル、物理シグナルについて説明を行なう。チャネルとは信号の送受信に用いられる媒体を意味し、物理チャネルとは信号の送受信に用いられる物理的な媒体を意味する。本発明において、物理チャネルは、信号と同義的に使用され得る。物理チャネルは、EUTRA、およびAdvanced EUTRAにおいて、今後追加、または、その構造やフォーマット形式が変更または追加される可能性があるが、変更または追加された場合でも本発明の各実施形態の説明には影響しない。
基地局装置によって制御される各周波数の通信可能範囲(通信エリア)はセルとしてみなされる。このとき、基地局装置がカバーする通信エリアは周波数毎にそれぞれ異なる広さ、異なる形状であっても良い。また、カバーするエリアが周波数毎に異なっていてもよい。基地局装置の種別やセル半径の大きさが異なるセルが、同一の周波数または異なる周波数のエリアに混在して一つの通信システムを形成している無線ネットワークのことを、ヘテロジニアスネットワークと称する。
端末装置と基地局装置は、複数の異なる周波数バンド(周波数帯)の周波数(コンポーネントキャリア、または周波数帯域)を集約(アグリゲート、aggregate)して一つの周波数(周波数帯域)のように扱う技術(キャリア・アグリゲーション)を適用してもよい。キャリア・アグリゲーションにおいて、コンポーネントキャリアとして、上りリンクに対応する上りリンクコンポーネントキャリアと、下りリンクに対応する下りリンクコンポーネントキャリアとがある。本明細書において、周波数と周波数帯域は同義的に使用され得る。
デュアルコネクティビティの基本構造(アーキテクチャー)について説明する。デュアルコネクティビティにおいて、端末装置は、複数の基地局装置と同時に接続している。複数の基地局装置とは、マクロセルを構成する基地局装置とスモールセルを構成する別の基地局装置から構成される。また、複数の基地局装置とは、スモールセルを構成する基地局装置と別のスモールセルを構成する別の基地局装置から構成される。
端末装置が異なる複数の周波数バンドのセルを同時に通信可能であるときの端末装置能力の構成(シグナリング構造、メッセージ構造)について説明する。
本発明の第1の実施形態について以下に説明する。
本発明の第2の実施形態について以下に説明する。
本発明の第3の実施形態について以下に説明する。
2、2-1、2-2 基地局装置
101、201 受信部
102、202 復調部
103、203 復号部
104、204 受信データ制御部
105、205 物理レイヤ制御部
106、206 送信データ制御部
107、207 符号部
108、208 変調部
109、209 送信部
110、210 無線リソース制御部
211 ネットワーク信号送受信部
R01、R02 受信アンテナ部
T01、T02 送信アンテナ部
Claims (13)
- プライマリセルとセカンダリセルとを含む複数の在圏セルを用いて複数の基地局装置と通信可能な端末装置であって、
端末装置能力情報として、複数の前記基地局装置に対する送受信をサポートするか否かを示す第1の情報と、複数の前記基地局装置に関わる無線ベアラの分割伝送をサポートするか否かを示す第2の情報を設定し、前記端末装置能力情報を含む端末装置能力メッセージを前記基地局装置に送信し、
複数の前記基地局装置に対する送受信は、複数の前記基地局装置にそれぞれ対応する複数のMAC層によってなされ、
前記複数のMAC層は、複数の前記基地局装置に属するセルグループ内のセルにおいて物理上りリンク制御チャネルの送信をサポートする端末装置。 - 前記第1の情報は、前記端末装置がサポートする周波数バンドの組み合わせに対応してそれぞれ設定される請求項1に記載の端末装置。
- 前記端末装置能力情報は、前記周波数バンドの組み合わせにおいて、デュアルコネクティビティを用いた通信が可能であるか否かを示す請求項2に記載の端末装置。
- プライマリセルとセカンダリセルとを含む複数の在圏セルを用いて端末装置と通信可能な基地局装置であって、
前記端末装置から端末装置能力情報として、複数の前記基地局装置に対する送受信をサポートするか否かを示す第1の情報と、複数の前記基地局装置に関わる無線ベアラの分割伝送をサポートするか否かを示す第2の情報と、を含む端末装置能力メッセージを受信し、
前記端末装置能力情報に基づく無線リソース設定情報を前記端末装置に送信し、
前記第1の情報は、前記端末装置において、複数の前記基地局装置にそれぞれ対応する複数のMAC層と、前記複数のMAC層における物理上りリンク制御チャネルの送信が可能であることを示す、基地局装置。 - 周波数バンドの組み合わせに対応してそれぞれ設定される前記第1の情報に基づいて、無線リソース設定情報を前記端末装置に送信する請求項4に記載の基地局装置。
- 周波数バンドの組み合わせに対応して設定される前記第1の情報に基づいて、デュアルコネクティビティに関する無線リソース設定情報を前記端末装置に設定可能であるか否を判断する請求項5に記載の基地局装置。
- プライマリセルとセカンダリセルとを含む複数の在圏セルを用いて通信する端末装置と、前記端末装置と通信する基地局装置と、から構成される通信システムであって、
前記端末装置は、端末装置能力情報として、複数の前記基地局装置に対する送受信をサポートするか否かを示す第1の情報と、複数の前記基地局装置に関わる無線ベアラの分割伝送をサポートするか否かを示す第2の情報と、を設定し、前記端末装置能力情報を含む端末装置能力メッセージを前記基地局装置に送信し、
複数の前記基地局装置に対する送受信は、複数の前記基地局装置にそれぞれ対応する複数のMAC層によってなされ、
前記複数のMAC層は、複数の前記基地局装置に属するセルグループ内のセルにおいて物理上りリンク制御チャネルの送信をサポートし、
前記基地局装置は、前記端末装置能力情報を含む端末装置能力メッセージを受信し、前記端末装置能力情報に基づく無線リソース設定情報を前記端末装置に送信する通信システム。 - プライマリセルとセカンダリセルとを含む複数の在圏セルを用いて複数の基地局装置と通信可能な端末装置の通知方法であって、
端末装置能力情報として、複数の前記基地局装置に対する送受信をサポートするか否かを示す第1の情報と、複数の前記基地局装置に関わる無線ベアラの分割伝送をサポートするか否かを示す第2の情報と、を設定するステップと、前記端末装置能力情報を含む端末装置能力メッセージを前記基地局装置に送信するステップと、を含み、
複数の前記基地局装置に対する送受信は、複数の前記基地局装置にそれぞれ対応する複数のMAC層によってなされ、
前記複数のMAC層は、複数の前記基地局装置に属するセルグループ内のセルにおいて物理上りリンク制御チャネルの送信をサポートする通信方法。 - 前記第1の情報を、前記端末装置がサポートする周波数バンドの組み合わせに対応してそれぞれ設定するステップをさらに含む請求項8に記載の通信方法。
- プライマリセルとセカンダリセルとを含む複数の在圏セルを用いて端末装置と通信可能な基地局装置の通信方法であって、
前記端末装置から端末装置能力情報として、複数の前記基地局装置に対する送受信をサポートするか否かを示す第1の情報と、複数の前記基地局装置に関わる無線ベアラの分割伝送をサポートするか否かを示す第2の情報と、を含む端末装置能力メッセージを受信するステップと、
前記端末装置能力情報に基づく無線リソース設定情報を前記端末装置に送信するステップと、を含み、
前記第1の情報は、前記端末装置において、複数の前記基地局装置にそれぞれ対応する複数のMAC層と、前記複数のMAC層における物理上りリンク制御チャネルの送信が可能であることを示す、通信方法。 - プライマリセルとセカンダリセルとを含む複数の在圏セルを用いて複数の基地局装置と通信可能な端末装置に実装される集積回路であって、
端末装置能力情報として、複数の前記基地局装置に対する送受信をサポートするか否かを示す第1の情報と、複数の前記基地局装置に関わる無線ベアラの分割伝送をサポートするか否かを示す第2の情報を設定する機能と、前記端末装置能力情報を含む端末装置能力メッセージを前記基地局装置に送信する機能と、を前記端末装置に対して少なくとも発揮させ、
複数の前記基地局装置に対する送受信は、複数の前記基地局装置にそれぞれ対応する複数のMAC層によってなされ、
前記複数のMAC層は、複数の前記基地局装置に属するセルグループ内のセルにおいて物理上りリンク制御チャネルの送信をサポートする、集積回路。 - 前記第1の情報を、前記端末装置がサポートする周波数バンドの組み合わせに対応してそれぞれ設定する機能を、前記端末装置に対して発揮させる請求項11に記載の集積回路。
- プライマリセルとセカンダリセルとを含む複数の在圏セルを用いて端末装置と通信可能な基地局装置に実装される集積回路であって、
前記端末装置から端末装置能力情報として、複数の前記基地局装置に対する送受信をサポートするか否かを示す第1の情報と、複数の前記基地局装置に関わる無線ベアラの分割伝送をサポートするか否かを示す第2の情報と、を含む端末装置能力メッセージを受信する機能と、
前記端末装置能力情報に基づく無線リソース設定情報を前記端末装置に送信する機能と、を前記基地局装置に対して少なくとも発揮させ、
前記第1の情報は、前記端末装置において、複数の前記基地局装置にそれぞれ対応する複数のMAC層と、前記複数のMAC層における物理上りリンク制御チャネルの送信が可能であることを示す、集積回路。
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JP2015554881A JP6462588B2 (ja) | 2013-12-26 | 2014-12-22 | 端末装置、基地局装置および通信方法 |
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Also Published As
Publication number | Publication date |
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JP6462588B2 (ja) | 2019-01-30 |
EP3089490A1 (en) | 2016-11-02 |
EP3089490B1 (en) | 2018-10-10 |
CN105814921B (zh) | 2019-06-21 |
EP3089490A4 (en) | 2017-08-02 |
JPWO2015098837A1 (ja) | 2017-03-23 |
US9832762B2 (en) | 2017-11-28 |
US20170006598A1 (en) | 2017-01-05 |
CN105814921A (zh) | 2016-07-27 |
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