HK1136135B - Radio communication system, base station device and mobile station device - Google Patents

Description

Wireless communication system, base station device, and mobile station device

Technical Field

The present invention relates to a radio communication system, a base station apparatus, and a mobile station apparatus, and more particularly to a packet data communication system having an adaptive modulation/demodulation/error correction scheme based on adaptive radio link control as an EUTRA technique in a mobile communication system.

Background

In 3GPP (3rd Generation Partnership Project), W-CDMA is standardized as a third Generation cellular mobile communication system, and services are started in sequence. In addition, hsdpa (high Speed Downlink Packet access) for further increasing the communication Speed is also standardized, and the service is started.

In 3GPP, evolution of third generation Radio Access (Evolved universal Radio Access, hereinafter referred to as EUTRA) is studied.

As a downlink for EUTRA, an ofdm (orthogonal frequency division multiplexing) scheme is proposed.

As the EUTRA technology, a technology of an Adaptive Modulation demodulation and Coding Scheme (AMCS, hereinafter referred to as AMCS Scheme) based on Adaptive radio Link control (Link adaptation) such as channel Coding is applied to the OFDM Scheme.

AMCS is a scheme for switching radio transmission parameters (hereinafter referred to as AMC modes) such as an error correction scheme, an error correction coding rate, a data modulation multivalued number, a code Spreading Factor (SF) on a time/frequency axis, and a multicode multiplex number according to a transmission path status of each mobile station in order to efficiently perform high-speed packet data transmission.

For example, as the transmission path conditions become better in data modulation, the maximum throughput (throughput) of the communication system can be increased by switching from qpsk (quadrature Phase Shift keying) modulation to more efficient multilevel modulation such as 8PSK modulation or 16qam (quadrature Amplitude modulation).

Further, as an uplink of EUTRA, various proposals have been made such as a multicarrier communication method and a single carrier communication method, and a single carrier communication method is proposed in which PAPR (Peak to Average Power Ratio) characteristics are superior to those of a multicarrier communication method such as OFDM.

Fig. 18 shows a channel configuration of an uplink/downlink assumed based on a proposal of 3GPP for EUTRA.

The downlink of EUTRA is composed of a downlink pilot channel dpich (downlink pilotchannel), a downlink Synchronization channel dsch (downlink Synchronization channel), a downlink Common Control channel dccch (downlink Common Control channel), a downlink Shared Control signaling channel dscscch (downlink Shared Control signaling channel), and a downlink Shared data channel dsdch (downlink Shared data channel) (non-patent document 1).

The uplink of EUTRA is composed of an uplink pilot Channel upich (uplink pilot Channel), a Contention-based Channel CBCH (Contention-based Channel), and an uplink Scheduling Channel usch (uplink Scheduling Channel) (non-patent document 2).

In the downlink of EUTRA, the downlink Pilot channel DPiCH includes a downlink Common Pilot channel dcpcich (downlink Common Pilot channel) and a downlink individual Pilot channel ddpich (downlink divided Pilot channel).

The downlink common Pilot channel DCPiCH corresponds to a common Pilot channel cpich (common Pilot channel) of the W-CDMA system, and is used for deriving characteristics of a downlink radio transmission path in the AMCS system, searching cells (cells), and measuring a transmission path loss in uplink transmission power control.

The downlink individual pilot channel DDPiCH can also be used for the purpose of transmitting a signal from an antenna having a radio transmission path characteristic different from a cell-shared antenna such as an adaptive array antenna (adaptive array antenna) to an individual mobile station apparatus, or enhancing the downlink common pilot channel DCPiCH to a mobile station apparatus having a low reception quality if necessary.

The downlink synchronization channel DSCH corresponds to a synchronization channel sch (synchronization channel) of the W-CDMA system, and is used for cell search of the mobile station apparatus, radio frame (radio frame) of OFDM signal, time slot (tti), transmission timing interval (tti), and OFDM symbol timing synchronization (symbol timing synchronization).

The downlink Common Control channel DCCCH includes Common Control information such as a first Common Control Physical channel (P-ccpch) (primary Common Control Physical channel), a second Common Control Physical channel (S-ccpch) (secondary Common Control Physical channel), and a paging indicator channel (pich), a paging indicator (pi) (paging indicator) information, paging information, and downlink access information.

The downlink Shared control signaling channel DSCSCH corresponds to a control information channel of a high Speed Physical downlink Shared channel HS-pdsch (high Speed Physical downlink Shared channel) of the HSDPA system, and is Shared by a plurality of mobile station apparatuses, and is used for each mobile station apparatus to transmit information (such as a modulation scheme and a spreading code) necessary for demodulating the high Speed downlink Shared channel HS-dsch (high Speed downlink Shared channel), information necessary for error correction decoding processing or harq (hybrid Automatic Repeat request) processing, scheduling information of radio resources (frequency and time), and the like.

The downlink shared data channel DSDCH corresponds to a packet data channel of a high speed physical downlink shared channel HS-PDSCH of the HSDPA system, and is used for transmitting packet data from an upper layer to the mobile station apparatus.

In the uplink, the contention based channel CBCH corresponds to a random Access channel rach (random Access channel) of the W-CDMA scheme.

The Uplink scheduling Channel USCH is composed of a shared Control Channel scch (shared Control Channel) and a shared Data Channel sdch (shared Data Channel), corresponds to an Uplink Dedicated Physical Data Channel udpdch (Uplink Dedicated Physical Data Channel) of the W-CDMA scheme and an Uplink Dedicated Physical Control Channel HS-DSCH associated with an HS-DSCH of the HSDPA scheme, and is shared by the mobile station apparatuses and used for transmission of packet Data transmission of the mobile station apparatuses, downlink Channel quality information cqi (Channel quality indicator), feedback information such as HARQ, and Uplink pilot, Uplink Channel Control information, and the like.

The uplink pilot channel UPiCH is used for deriving the characteristics of the uplink radio transmission path in the AMCS method.

Fig. 19 shows a configuration of a downlink radio frame based on the proposal of 3GPP for EUTRA.

The downlink radio frame is composed of 2 dimensions of a plurality of subcarrier groups on the frequency axis, i.e., Chunk and a time axis, i.e., a slot TTI. The Chunk is composed of several subcarrier groups, and includes 16 chunks on the frequency axis when the entire downlink spectrum (downlink bandwidth) BW is 20MHz and the Chunk bandwidth Bch is 1.25 MHz.

In addition, when 1 radio frame is 10ms and TTI is 0.5ms on the time axis, 20 TTIs are included. The 1 radio frame includes 16 chunks and 20 TTIs, and the 1TTI includes a plurality of OFDM symbols (Ts).

Therefore, in this example, the minimum radio resource unit usable by the mobile station apparatus is 1 Chunk and 1TTI (0.5 ms).

Furthermore, the radio resources of 1 Chunk can be divided into more detailed segments.

As shown in fig. 19, the downlink common pilot channel dcpcich is mapped to the beginning of each TTI. The downlink individual pilot channel DDPiCH is mapped to an appropriate position of 1TTI (for example, to the center of the TTI) according to the antenna usage of the base station or the propagation path of the mobile station apparatus, if necessary.

The downlink common control channel DCCCH and the downlink synchronization channel DSCH are mapped to the TTI at the beginning of the radio frame. By using the TTI mapped to the radio frame start, if the mobile station apparatus is in the idle mode, it is possible to receive the common control information such as the cell search, the time synchronization, the notification information, and the paging information if only the radio frame start TTI or a plurality of OFDM symbol lengths (Ts) within the radio frame start TTI is received. The mobile station device can operate by intermittently receiving IR (Intermittent reception) when it is in the idle mode.

The downlink shared control signaling channel DSCSCH is mapped to the beginning of each TTI in the same manner as the downlink common pilot channel DCPiCH. Even in packet communication, the mobile station apparatus can perform intermittent reception for receiving only the downlink shared control signaling channel DSCSCH when there is no packet data addressed to the mobile station apparatus in each TTI.

Downlink shared data information DSDCH is divided into pieces by Chunk, and packet data to be transmitted to each mobile station apparatus is transmitted based on the AMCS method. Each Chunk is assigned to a user (for example, mobile station devices MS1, MS2, and MS3 as shown in fig. 19) according to the propagation path situation of each mobile station device.

The following user scheduling methods are proposed: as shown in fig. 19, 1 Chunk unit is allocated to 1 user in the time slots of TTI _1 and TTI _2, 1 Chunk or more is allocated to a user having good radio channel characteristics, and multi-user diversity effect (diversity effect) is used to improve the throughput of the entire system, and as shown in fig. 19, a plurality of chunks and sub-TTI units are allocated to a plurality of users in the time slots of TTI _3, TTI _ n-1, and TTI _ n, so that a user having poor radio channel characteristics at a cell boundary or at a high speed is allowed to have a wide frequency bandwidth across a plurality of chunks, and the reception characteristics are improved by using the frequency diversity effect.

Fig. 20 shows a configuration of an uplink radio frame based on a proposal of 3GPP for EUTRA.

The uplink radio frame is composed of 2 dimensions of a plurality of subcarrier groups on the frequency axis, i.e., Chunk and a time axis, i.e., a slot TTI. The Chunk is composed of several subcarrier groups, and for example, when the entire frequency spectrum (uplink bandwidth) BW of the uplink is 20MHz and the frequency bandwidth Bch of the Chunk is 1.25MHz, the frequency axis of the uplink is composed of 16 chunks.

In addition, when 1 radio frame is 10ms and TTI is 0.5ms on the time axis, 20 TTIs are included. The 1 radio frame includes 16 chunks and 20 TTIs, and the 1TTI includes a plurality of symbols long.

Therefore, in this example, the minimum radio resource unit usable by the mobile station apparatus is 1 Chunk (1.25MHz) and 1TTI (0.5 ms).

Furthermore, the radio resources of 1 Chunk can be divided into more detailed segments.

As shown in fig. 20, the uplink pilot channel UPiCH is mapped to the beginning and end of each TTI of the uplink scheduling channel USCH.

The base station apparatus derives a radio transmission path or detects synchronization between the mobile station apparatus and the base station apparatus from the uplink pilot channel UPiCH from each mobile station apparatus.

Each mobile station apparatus can simultaneously transmit an uplink pilot channel UPiCH using a comb-shaped spectrum (Distributed FDMA), a Localized spectrum (Localized FDMA), or CDMA.

The contention based channel CBCH is divided into pieces in units of Chunk, and when there is user data or control data not scheduled from the base station apparatus, the pieces of control data are transmitted to the contention based channel CBCH.

The uplink scheduling channel USCH is divided into units of Chunk, and transmits packet data from each mobile station apparatus scheduled by the base station apparatus to the base station apparatus based on the AMCS method.

Each Chunk is assigned to a user (as an example, mobile station devices MS1, MS2, MS3, MS4, and MS5 as shown in fig. 20) according to the radio transmission path situation of each mobile station device.

In the request item of EUTRA, it is required to consider also the power consumption of the mobile station apparatus (non-patent document 3).

Further, non-patent document 4 proposes to suppress power consumption by controlling a period during which the reception control information or the user data is transmitted and a period during which the reception control information or the user data is not transmitted.

Non-patent document 1: r1-050707 "Physical Channel and multiplexing in evolved UTRA Downlink", 3GPP TSG RAN WG1 moving #42London, UK, August 29-September 2, 2005

Non-patent document 2: r1-050850, "Physical Channel and multiplexing in evolved UTRA Uplink", 3GPP TSG RAN WG1Metting #42London, UK, August 29-September 2, 2005

Non-patent document 3: 3GPP TR (Technical Report)25.913, V2.1.0(2005-05), Requirements for evolved Universal Radio Access (UTRA) and Universal Radio Access Network (UTRAN)

Non-patent document 4: r2-061061 'DRX and DTX Operation in LTE _ Active', 3GPP TSG RAN WG2Metting #52Athena, Greece, March27-31, 2006

However, in non-patent document 4, although it is proposed to suppress power consumption by controlling a period during which the reception control information or the user data is transmitted and a period during which the reception control information and the user data are not transmitted, no specific proposal has been made.

Disclosure of Invention

The present invention has been made in view of the above circumstances, and an object thereof is to provide a radio communication system, a base station apparatus, and a mobile station apparatus, which suppress power consumption of the mobile station apparatus in consideration of communication services in a packet data communication system having an adaptive modulation/demodulation/error correction system based on adaptive radio link control as an EUTRA technology.

In order to solve the above problem, a base station apparatus and a mobile station apparatus according to the present invention are configured as follows.

The base station apparatus sets an interval at which the mobile station apparatus of the downlink control channel including the radio resource scheduling information can receive the interval, includes the interval in an RRC message, and transmits the RRC message to the mobile station apparatus.

A mobile station device is provided with: a radio unit configured to receive the RRC message; and a DRX control unit configured to set an interval for executing a reception process of a downlink control channel including radio resource scheduling information, based on the RRC message.

Alternatively, the mobile station apparatus includes a DRX controller that sets an interval for performing a reception process of a downlink control channel including radio resource scheduling information, based on a time from when a response to the uplink data channel is transmitted to when the base station apparatus receives the response after the uplink data channel is transmitted.

The mobile station apparatus measures the reception quality of the surrounding cells in a period different from the receivable interval of the downlink control channel.

The receivable interval of the downlink control channel is a period during which the uplink shared control signaling channel can be transmitted.

The downlink control channel is a control channel containing radio resource scheduling information of a downlink data channel in the same time slot as a time slot in which the control channel is configured.

Furthermore, downlink channel quality information is transmitted at a time associated with the receivable interval of the downlink control channel, and a reception process of a control channel including radio resource scheduling information of an uplink data channel is performed.

In addition, when the base station apparatus and the mobile station apparatus have a table in which the interval corresponding to the service type is stored, the type number of the table may be included in the RRC message.

In addition, when the intervals of the receivable intervals are different, the intervals are respective multiples.

The interval is set by any one of the following.

(1) The setting is made in accordance with the radio quality of the mobile station apparatus.

(2) The service is set according to the type of the service of the mobile station device.

(3) The communication link of the mobile station device is secured and the communication link is not secured, the values are set to be different.

The base station apparatus notifies the mobile station apparatus of a bit indicating an increase or decrease in the slot unit of the interval, and the mobile station apparatus adjusts the interval in accordance with the bit.

According to the present invention, it is possible to provide a radio communication system in which a transmission/reception enabled section and a transmission/reception disabled section are set for an uplink and a downlink in accordance with a service, respectively, thereby reducing power consumption in a mobile station apparatus and performing efficient scheduling in consideration of the service in a base station apparatus.

Drawings

Fig. 1 is a block diagram showing a configuration of a mobile station apparatus according to the present invention.

Fig. 2 is a block diagram showing a configuration of a base station apparatus according to the present invention.

Fig. 3 is a diagram illustrating the basic operation of the present invention.

FIG. 4 is a diagram showing operation example 1.

Fig. 5 is a diagram showing operation example 2.

Fig. 6 is a diagram showing operation example 3.

Fig. 7 is a diagram showing operation example 4.

Fig. 8 is a diagram showing operation example 5.

Fig. 9 is a diagram showing operation example 6.

Fig. 10 is a diagram showing operation example 7.

Fig. 11 is a diagram showing operation example 8.

Fig. 12 is a diagram showing operation example 9.

Fig. 13 is an example of parameters for improving radio quality.

Fig. 14 is a diagram showing an operation example 10.

Fig. 15 is a diagram showing operation example 11.

Fig. 16 is an example of a service change Active Period according to operation example 11.

Fig. 17 is a diagram showing operation 12.

Fig. 18 is a diagram of a channel structure of an uplink/downlink assumed based on a proposal of 3GPP for EUTRA.

Fig. 19 is a diagram of a structure of a downlink radio frame assumed based on a proposal of 3GPP for EUTRA.

Fig. 20 shows a structure of an uplink radio frame assumed based on a proposal of 3GPP for EUTRA.

In the figure: 100. 100 of a gas turbine₁、100₂、100_n-mobile station device, 110-transmitting part, 111-data control part, 112-data modulation part, 113-DFT-S-OFDM modulation part, 120-DTX/DRX control part, 130-radio control part, 140-scheduling part, 150-receiving part, 151-channel derivation part, 152-OFDM demodulation part, 153-data demodulation part, 154-control data extraction part, 160-radio part, 200-base station device, 210-data control part, 220-numberA data modulation section, 230-OFDM modulation section, 240-modulation section, 241-DL modulation section, 242-UL modulation section, 250-channel estimation section, 260-DFT-S-OFDM demodulation section, 270-data demodulation section, 280-control data extraction section, 290-radio section.

Detailed Description

Next, preferred embodiments of a base station apparatus, a mobile station apparatus, and a wireless communication system according to the present invention will be described with reference to the drawings.

In the following, terms used in this specification are defined.

Dcfc (downlink CQI Feedback cycle) indicates an interval at which the mobile station apparatus measures DPiCH, calculates downlink CQI, and transmits the downlink CQI to the base station apparatus.

Uap (uplink Active period) indicates an interval at which the mobile station apparatus can transmit control information or user data in the uplink (or an interval at which the base station apparatus can schedule the mobile station apparatus in the uplink). The downlink CQI is transmitted at the start of UAP.

Dap (downlink Active period) indicates an interval at which the mobile station apparatus can receive control information or user data from the base station apparatus via the downlink (or an interval at which the base station apparatus can transmit control information or user data scheduled to the mobile station apparatus via the downlink to the mobile station apparatus).

Usc (uplink Scheduling cycle) indicates the interval from the start of a UAP to the start of the next UAP.

Dsc (downlink Scheduling cycle) represents the interval from the start of a DAP to the start of the next DAP.

Fig. 1 is a block diagram showing a configuration of a mobile station apparatus 100, and fig. 2 is a block diagram showing a configuration of a base station apparatus 200.

In fig. 1, the mobile station apparatus 100 includes a transmitter 110, a DTX/DRX controller 120, a radio controller 130, a scheduler 140, a receiver 150, and a radio unit 160.

The transmission unit 110 includes a data control unit 111, a data modulation unit 112, and a DFT-S-OFDM modulation unit 113, and the reception unit 150 includes a channel estimation unit 151, an OFDM (DFT-spread OFDM) demodulation unit 152, a data demodulation unit 153, and a control data extraction unit 154.

The data control unit 111 is configured to input transmission data or control data, and to transmit the control data, CQI information, and transmission data using the contention based channel CBCH or uplink scheduling channel USCH in accordance with an instruction from the scheduling unit 140.

The data modulation unit 112 modulates the control data and the transmission data using a coding scheme of the modulation scheme of the AMC information transmitted from the scheduling unit 140.

The DFT-S-OFDM modulator 113 receives the data-modulated transmission data or control data, performs serial/parallel conversion of the input signal, multiplication by a spreading code and a scrambling code, DFT conversion, subcarrier mapping, ifft (inverse Fast Fourier transform) conversion, and DFT-spread OFDM signal processing such as cp (cyclic prefix) insertion and filtering, and generates a DFT-spread OFDM signal.

The uplink communication scheme is a single carrier scheme of DFT-spread OFDM or VSCRF-CDMA, but may be a multi-carrier scheme of OFDM.

The radio unit 160 sets the radio frequency instructed by the radio control unit 130, up-converts the modulated data into a radio frequency, and transmits the radio frequency to the base station apparatus 200.

Radio unit 160 receives downlink data from base station apparatus 200, down-converts the data to a baseband signal, and transmits the received data to OFDM demodulation unit 152.

The channel estimation unit 151 estimates the radio channel characteristics from the downlink pilot channel DPiCH, and sends the estimation result to the OFDM demodulation unit 152. Then, the CQI information is converted into CQI information to notify the base station apparatus 200 of the radio channel estimation result, and is transmitted to the data control unit 111 and the scheduling unit 140.

The OFDM demodulation unit 152 performs OFDM signal processing such as CP removal, filtering, and FFT conversion, and demodulates the OFDM signal based on the result of the downlink radio transmission path derivation by the channel derivation unit 151.

The data demodulation section 153 demodulates the received data based on the AMC information of the downlink extracted from the control data extraction section 154.

The control data extraction unit 154 separates the received data into user data and control data (downlink shared control signaling channel DSCSCH and downlink shared control channel DCCCH). The AMC information on the downlink in the control data is transmitted to the data demodulation section 153, and the AMC information and the scheduling information on the uplink are transmitted to the scheduling section 140.

The scheduling unit 140 instructs the base station apparatus 200 to map transmission data or control data to a physical channel, and actually transmits the transmission data and control data to the data control unit 111, the data modulation unit 112, and the DFT-S-OFDM modulation unit 113, in order to map the transmission data or control data to the physical channel.

The DTX/DRX controller 120 calculates a transmission stop period and a reception stop period from parameters of DCFC, USC, DSC, UAP, and DAP from an upper layer, and stops the transmitter 110 or the receiver 150 during the transmission stop period or the reception stop period. When an instruction to measure another cell is given from the upper layer, a frequency switching instruction is given to measure another cell in the period.

In fig. 2, the base station apparatus 200 includes a data control unit 210, a data modulation unit 220, an OFDM modulation unit 230, a scheduling unit 240, a channel estimation unit 250, a DFT-S-OFDM demodulation unit 260, a data demodulation unit 270, a control data extraction unit 280, and a radio unit 290.

The scheduling unit 240 includes a DL scheduling unit 241 for performing downlink scheduling and an UL scheduling unit 242 for performing uplink scheduling.

The data control unit 210 inputs the data to each mobile station device 100_nAccording to the instruction from scheduler 240, the control data is mapped to common control channel CCCH, synchronization channel SCH, pilot channel PiCH, and shared control channel SCCH, and transmitted to each mobile station apparatus 100_nTo the shared data channel SDCH.

The data modulation section 220 performs data modulation using the data modulation scheme and coding scheme of the AMC information transmitted from the scheduling section 240.

The OFDM modulator 230 performs OFDM signal processing such as serial/parallel conversion, IFFT conversion, CP insertion, and filtering of the input signal, and generates an OFDM signal.

The radio unit 290 up-converts the OFDM-modulated data into a radio frequency and transmits the radio frequency to the mobile station apparatus. The radio unit 290 receives the signal from the mobile station apparatus 100_nDown-converts the uplink data into a baseband signal, and transmits the received data to DFT-S-OFDM demodulation section 260 and channel estimation section 250.

The channel derivation section 250 derives the radio transmission path characteristics from the uplink pilot channel UPiCH, and passes the derivation result to the DFT-S-OFDM demodulation section 260. Then, in order to perform uplink scheduling, the radio channel estimation result is transmitted to the scheduling unit 240.

The DFT-S-OFDM demodulation section 260 performs filtering, CP removal, DFT processing, and IFFT processing, and performs DFT-S-OFDM demodulation based on the result of the radio transmission path derivation by the channel derivation section 250.

The data demodulation unit 270 demodulates the received data based on the AMC information of the downlink extracted from the control data extraction unit 280.

The control data extracting unit 280 separates the received data into user data (uplink shared data information USDCH) and control data (uplink shared control signaling channel USCSCH), and transmits the separated data to the upper layer. The AMC information of the uplink in the control data is transmitted to the data demodulation section 270, and the CQI information of the downlink is transmitted to the scheduling section 240.

The DL scheduling unit 241 of the scheduling unit 240 is based on the slave mobile station device 100_nThe reported CQI information or data information of each user reported from the upper layer calculates scheduling for mapping user data to each channel of the downlink or AMC for modulating each data.

The UL scheduling unit 242 also derives the uplink radio channel from the channel derivation unit 250 and the mobile station apparatus 100_nThe resource allocation request of (2) calculates scheduling for mapping user data to each channel of the uplink or AMC for modulating each data.

Next, the basic operation of the present invention will be described with reference to fig. 3.

The mobile station apparatus 100 transmits a downlink CQI during the UAP period, repeats at DCFC intervals, receives a downlink pilot during the DAP period, and measures a downlink CQI.

Then, the user data or the control information (here, response information indicating uplink scheduling information or user data) is received to the own station apparatus.

The uplink pilot is transmitted during the UAP, and when there is user data or control information to be transmitted (here, uplink scheduling request information or response information (ACK/NACK) of the user data), the information is transmitted.

The base station apparatus 200 calculates an uplink CQI from an uplink pilot transmitted from the mobile station apparatus 100 during the UAP of the mobile station apparatus 100, and performs scheduling so that the mobile station apparatus 100 can use uplink transmission.

And receives user data and control information from the mobile station apparatus 100. Then, the data and control information scheduled to the mobile station apparatus during the DAP period of the mobile station apparatus 100 are transmitted to the mobile station apparatus 100. In addition, base station apparatus 200 constantly transmits a downlink pilot.

The interval between the UAP and the DAP is determined according to the delay of the radio interval between the base station apparatus 200 and the mobile station apparatus 100, the processing time in the base station apparatus 200 and the mobile station apparatus 100, the validity of the CQI in the radio interval, and the response cycle of success/failure of data reception.

The interval between the USC and DSC is dynamically controlled according to the fluctuation characteristics of the service traffic during communication.

The DAP and UAP periods correspond to the effective periods of CQIs, and the minimum interval between USCs and DSCs corresponds to the data reception success/response period. The response period of success/failure of data reception must be estimated based on the delay through the transmission path after data transmission, and the time until the decoding process of the receiver can actually recover.

In addition, it is necessary to consider the measurement of the downlink CQI, the delay of the transmission path after transmission of the downlink CQI information, and the time until actual scheduling can be performed after the decoding process by the receiver. Here, the time from the transmission of data from the transmitter to the return after the processing corresponding to the data by the receiver is configured to be 5 TTIs. Further, by controlling DAP, UAP, USC, and DSC by their respective multiples, the system can be simplified.

[ working example 1]

Fig. 4 shows a specific operation example 1 in the downlink.

The following operations are performed when DCFC is 10TTI interval, USC is 10TTI interval, DSC is 10TTI interval, UAP is 5TTI interval, and DAP is 5TTI interval. Here, for the sake of simple explanation, a case where user data is provided only in the downlink will be described.

The mobile station apparatus 100 transmits the downlink CQI at 10TTI intervals.

The downlink reception is repeated by performing reception processing for 5 TTIs, stopping reception for 5 TTIs. The uplink transmission process is performed for 5 TTIs, and the transmission process is stopped for 5 TTIs.

The base station apparatus 200 performs uplink scheduling at 10TTI intervals, and performs scheduling for 5 TTIs. Downlink scheduling is performed at 10TTI intervals, and scheduling is performed for 5 TTIs.

In the following, the order of the scheduled uplink pilots is expressed as UAP (a1), UAP (a2), UAP (a3), UAP (a4), …, and the order of the scheduled downlink pilots is expressed as DAP (b1), DAP (b2), DAP (b3), DAP (b4), ….

The uplink pilot and the downlink pilot at the time of TTI ═ t are denoted as UAP (a 1: 1) and DAP (b 1: t).

The mobile station apparatus 100 forms a downlink CQI from the downlink pilot, transmits the uplink pilot to the uplink UAP (a1), and transmits the downlink CQI to the base station apparatus 200 at the UAP (a 1: 1).

When the base station apparatus 200 receives the downlink CQI, data scheduled from the downlink CQI to the downlink DAP (b1) to the mobile station apparatus 100 is transmitted.

Then, the base station apparatus 200 performs scheduling for a response (data reception success/failure) to return data to the mobile station apparatus 100 at the UAP (a2), and transmits the user data to the mobile station apparatus 100 and uplink scheduling information for a response to return the user data. Here, data and control information is sent at the DAP (b 1: 6).

In addition, the scheduling of user data to the mobile station apparatus 100 and the scheduling of uplink scheduling information for returning a response of user data may be different between DAPs (b 1).

The scheduling position for returning a response may be specified by a control signal from the base station apparatus 200, or implicitly determined on the mobile station apparatus 100 side or the base station apparatus 200 side based on the number of data transmissions during the DAP.

That is, if a response to user data can be replied after a distance of 5 TTIs after receiving the user data, the position corresponding to the DAP (b 1: 6) is UAP (a 2: 11), and the position corresponding to the DAP (b 2: 17) is uniquely determined to be UAP (a 3: 22).

Further, the system may be configured so that the response to the user data of the DAP (b 2: 17, b 2: 18) is scheduled to be transmitted collectively between the base station apparatus 200 and the mobile station apparatus 100 by the UAP (a 3: 23), and the transmission position is implicitly determined without the need for control signal synchronization.

Alternatively, a point at which a response to the user data is transmitted from the base station apparatus 200 may be specified by the control signal, but the responses to be included in the point may be collectively transmitted to the user data received up to that point.

The mobile station apparatus 100 performs reception processing at the DAP (b1), and extracts and processes data and control information addressed to the mobile station apparatus. Here, processing is performed since the DAP (b 1: 6) has both data and control information. The UAP (a 2: 11) transmits the downlink CQI to the base station apparatus 200, and returns a response to the user data received at the DAP (b 1: 6).

The UAPs (a2, a3, a4) and DAPs (b2, b3, b4) perform transmission and reception processing by the mobile station apparatus 100 and the base station apparatus 200 in the same manner. The transmission process and the reception process of the mobile station apparatus 100 are stopped in a period other than the UAP and the DAP.

In this way, the transmission/reception stop section is provided for transmission/reception of the mobile station apparatus 100, and the battery consumption is reduced.

[ working example 2]

Fig. 5 shows an operation example 2 in which the amount of user data is large in the downlink.

The following operations are performed when DCFC is 10TTI interval, USC is 10TTI interval, DSC is 5TTI interval, UAP is 5TTI interval, and DAP is 5TTI interval.

The mobile station apparatus 100 transmits the downlink CQI at 10TTI intervals, performs transmission processing for 5 TTIs in uplink transmission, stops the transmission processing for 5 TTIs, and repeats the processing. Reception of the downlink is often performed.

The base station apparatus 200 performs uplink scheduling at 10TTI intervals, and performs scheduling for 5 TTIs. Downlink scheduling is performed at 5TTI intervals, and scheduling is performed for 5 TTIs.

The mobile station apparatus 100 forms a downlink CQI from the downlink pilot, transmits the uplink pilot to the uplink UAP (a1), and transmits the downlink CQI to the base station apparatus 200 at the UAP (a 1: 1).

When the base station apparatus 200 receives the downlink CQI, the data scheduled to the mobile station apparatus is performed at the downlink DAP (b 1).

Then, the base station apparatus 200 performs scheduling for response (success/failure of data reception) for the mobile station apparatus 100 to return data at the UAP (a 2). The user data transmitted to the mobile station apparatus 100 and uplink scheduling information for returning a response to the user data. Here, the user data and control information are sent at the DAP (b 1: 6, b 1: 7).

In addition, the scheduling of user data to the mobile station apparatus 100 and the scheduling of uplink scheduling information for returning a response of user data may be different between DAPs (b 1).

Also, uplink scheduling information for returning responses to data transmitted at the DAP (b 1: 6) and DAP (b 1: 7) can be transmitted at the same place (e.g., (b 1: 6 only)).

The mobile station apparatus 100 performs reception processing at DAP (b1), extracts data and control information to the own station apparatus, and performs processing. Here, since the DAP (b 1: 6, b 1: 7) has data and control information, processing is performed.

The mobile station apparatus 100 transmits the downlink CQI to the base station apparatus 200 at UAP (a 2: 11), returns a response to the user data received at DAP (b 1: 6), and returns a response to the user data received at DAP (b 1: 7) at UAP (a 2: 12).

As described in fig. 4, when there are a plurality of user data from the base station apparatus 200 at the DAP, the mobile station apparatus 100 can execute scheduling for returning a response to the user data at the same point (e.g., only (a 2: 12)). The scheduling position for returning a response may be specified by a control signal from the base station apparatus 200, or implicitly determined on the mobile station apparatus 100 side or the base station apparatus 200 side based on the number of data transmissions during the DAP.

Scheduling of responses to user data is complicated when USC and DSC are different. Since responses to user data received at the DAP (b 2: 12) and DAP (b 3: 17) must be scheduled at the UAP (a 3).

FIG. 5 shows that the maximum number of TTIs for scheduling user data during 2 DAPs does not exceed the number of TTIs in the UAP of 5.

At this time, the response to the user data of the DAP (b 4: 22, b 2: 23, b 5: 26) can be implicitly scheduled at the UAP (a 4: 31, a 4: 32, a 4: 33) in the order of reception of the user data.

However, when the maximum number of TTIs for scheduling user data during the DAP exceeds the number of TTIs in the UAP, a plurality of response information must be transmitted in 1TTI included in the UAP.

However, in this case, the position of the last received user data and the position of the response to the user data can be implicitly associated with each other, and the response to the user data received before that can be included and transmitted, whereby the system can be configured without a control signal.

For example, the response to the user data of the DAP (b 2: 12, b 3: 17) is collectively transmitted at the UAP (a 3: 22) corresponding to the position 5 from the DAP (b 3: 17). Responses to the user data of DAPs (b 4: 22, b 4: 23, b 5: 26) are sent centrally at the UAP (a 4: 31). As a simpler approach, it is intended to send the response to the user data sent by the previous DAP in the last TTI set of the UAP.

That is, a response to the user data of the DAP (b 2: 12, b 3: 17) is sent at the UAP (a 3: 25).

Alternatively, the point at which the response to the user data is transmitted from the base station apparatus is specified by the control signal, but the responses to be included in the point may be configured to collectively transmit the responses to the user data received before.

For example, scheduling information including a response to the user data of the DAP (b 2: 12, b 3: 17) is contained in the DAP (b 3: 17), and is designated to be transmitted collectively in the UAP (a 3: 22) in the scheduling information.

The UAPs (a2, a3, a4) and DAPs (b2, b3, b4) perform transmission and reception processing by the mobile station apparatus 100 and the base station apparatus 200 in the same manner. The transmission process or reception process of the mobile station apparatus 100 is stopped in a period other than the UAP or DAP.

In order to efficiently transmit the downlink, DCFC-5 TTI interval, USC-5 TTI interval, DSC-5 TTI interval, UAP-ITTI interval, and DAP-5 TTI interval are set. That is, by narrowing the useless UAP period, the remaining 4 TTIs can be allocated to other users, and the power consumption of the mobile station apparatus 100 can be further reduced.

[ working example 3]

Fig. 6 shows operation example 3 in which the amount of data is large in the uplink.

The following operations are performed when DCFC is 10TTI interval, USC is 5TTI interval, DSC is 10TTI interval, UAP is 5TTI interval, and DAP is 5TTI interval.

The mobile station apparatus 100 transmits the downlink CQI at 10TTI intervals, and downlink reception performs reception processing for 5 TTIs, stops reception for 5 TTIs, and repeats the processing. The transmission processing of the uplink is often performed.

The base station apparatus 200 performs uplink scheduling at 5TTI intervals, and performs scheduling for 5 TTIs. Downlink scheduling is performed at 10TTI intervals, and scheduling is performed for 5 TTIs.

The mobile station apparatus 100 forms a downlink CQI from a downlink pilot, transmits an uplink pilot to the uplink UAP (a1), and also transmits the downlink CQI and uplink scheduling transmission request information to the base station apparatus 200 at the UAP (a 1: 1).

When the base station apparatus 200 receives the downlink CQI and the uplink scheduling transmission request information, the data to be scheduled to the mobile station apparatus 100 is scheduled by the downlink DAP (b1), and the base station apparatus 200 performs scheduling for the mobile station apparatus 100 to return a data response (success/failure of data reception) by the UAP (a3, a 4).

Then, an uplink CQI is calculated from the uplink pilot, and uplink user data is scheduled in the UAP (a3, a4) based on the calculated uplink CQI and uplink scheduling transmission request information. The user data transmitted to the mobile station apparatus 100, uplink scheduling information for returning a response to the user data, and scheduling information of the uplink user data.

Here, the scheduling information of the user data and the response of the data is transmitted at the DAP (b 1: 6), and the scheduling information of the user data is transmitted at (b 1: 7).

In addition, the scheduling of user data to the mobile station apparatus 100 and the scheduling of uplink scheduling information for returning a response to the user data may be different between DAPs (b 1).

When the scheduling information frequency domain is determined in advance according to the type of service or the amount of communication, it is not necessary to transmit uplink scheduling transmission request information. In this case, the uplink scheduling transmission request information may be used in a scheduling information frequency domain that changes the current state according to the buffer status of uplink user data, for example.

The mobile station apparatus 100 performs reception processing at DAP (b1), extracts data and control information to the own station apparatus, and performs processing. Here, processing is performed since the DAP (b 1: 6) has both data and control information. The UAP (a 2: 1) transmits downlink CQI to the base station apparatus 200, and returns a response to the user data received at the DAP (b 1: 6).

The UAPs (a2, a3, a4) and DAPs (b2, b3, b4) perform transmission and reception processing by the mobile station apparatus 100 and the base station apparatus 200 in the same manner. The transmission process or reception process of the mobile station apparatus is stopped in a period other than the UAP or DAP.

In order to measure the CQI from the uplink pilot of the UAP adjacent to the DAP, the uplink pilot for CQI measurement of the UAP (a2, a4, a6, etc.) may not be transmitted. However, it is necessary to transmit pilots for demodulating user data transmitted at UPA (a 4: 17, a 4: 18, etc.).

The base station apparatus can also freely schedule the scheduling position for returning a response to the uplink user data, and implicitly determines the mobile station apparatus 100 side and the base station apparatus 200 side based on the number of data transmissions during the UAP period, as in the case of the response to the downlink user data shown in fig. 5.

In order to efficiently transmit the downlink, DCFC 5TTI interval, USC 5TTI interval, DSC 5TTI interval, UAP 5TTI interval, and DAP 1TTI interval are set.

That is, by narrowing the useless DAP period, the remaining 4 TTIs can be allocated to other users, and the power consumption of the mobile station apparatus 100 can be further reduced.

Thus, even when the amount of data is large in either the uplink or the downlink, the transmission/reception stop section is formed, and power consumption can be reduced.

When the amount of data is large in both uplink and downlink, DCFC-5 TTI interval, USC-5 TTI interval, DSC-5 TTI interval, UAP-5 TTI interval, and DAP-5 TTI interval are set.

[ working example 4]

Fig. 7 shows an operation example 4 in which the amounts of downlink and uplink data are small.

The following operations are performed at DCFC 20TTI interval, USC 20TTI interval, DSC 20TTI interval, UAP 5TTI interval, and DAP 5TTI interval.

The mobile station apparatus 100 transmits the downlink CQI at 20TTI intervals, performs reception processing for 5 TTIs in downlink reception, stops reception for 15 TTIs, and repeats the processing. Uplink transmission performs transmission processing for 5 TTIs, and repeats transmission for 15 TTIs with stopping.

The base station apparatus 200 performs uplink scheduling at 20TTI intervals, and performs scheduling for 5 TTIs. Downlink scheduling is also performed at 20TTI intervals, and scheduling is performed for 5 TTIs.

The mobile station apparatus forms a downlink CQI from the downlink pilot, transmits an uplink pilot to the uplink UAP (a1) for 5 consecutive TTIs, and transmits the downlink CQI to the base station apparatus at the UAP (a 1: 1). The downlink CQI is transmitted at 20TTI intervals.

When the base station apparatus 200 receives the downlink CQI, the DAP (b1) in the downlink schedules data to the mobile station apparatus 100, and the base station apparatus performs scheduling for responding to data returned by the mobile station apparatus (success/failure of data reception) in the UAP (a 2).

Then, an uplink CQI is calculated from the uplink pilot, and scheduling of uplink user data is performed at the UAP (a2) based on the calculated uplink CQI and uplink scheduling transmission request information.

The user data transmitted to the mobile station apparatus 100, uplink scheduling information for returning a response to the user data, and scheduling information of the uplink user data. Here, the scheduling information for the user data and the response of the data is sent at the DAP (b 1: 6).

The scheduling of user data to the mobile station apparatus 100 and the scheduling of uplink scheduling information for returning a response to the user data may be different between DAPs (b 1).

The mobile station apparatus 100 performs reception processing at DAP (b1), extracts data and control information to the own station apparatus, and performs processing. Here, processing is performed since the DAP (b 1: 6) has both data and control information.

The UAP (a 2: 1) transmits downlink CQI to the base station apparatus 200, and returns a response to the user data received at the DAP (b 1: 6).

The UAPs (a2, a3, a4) and DAPs (b2, b3, b4) perform transmission and reception processing by the mobile station apparatus 100 and the base station apparatus 200 in the same manner. The transmission process or reception process of the mobile station apparatus 100 is stopped in a period other than the UAP or DAP.

This enables intermittent reception with suppressed power consumption.

[ working example 5]

Fig. 8 shows an operation example 5 in which the amounts of data in the downlink and uplink are small.

In fig. 7, there is a problem that there is a long-term gap between the transmission of uplink scheduling information and the transmission of uplink data, and the radio transmission path varies, so that frequency scheduling suitable for uplink cannot be performed. The same problem occurs in the downlink. This is a problem when the DCFC, USC, and DSC periods are long, and when the data communication is performed at high speed in fig. 5 or 6, the DAP and UAP can be shared with the CQI measurement or the CQI measurement pilot transmission, and therefore, the above problem does not occur.

Therefore, the downlink CQI measurement period, the downlink CQI information transmission period, the uplink pilot transmission period, and the uplink scheduling request transmission period are set as control parameters, and the downlink data transmission period and the uplink data transmission period are set as data parameters, and the operation is performed using 2 parameters.

The parameters for control are set as follows: DCFC1, USC1, DSC1, UAP1, DAP1, and the data parameters are as follows: DCFC 2-80 TTI interval, USC 2-80 TTI interval, DSC 2-80 TTI interval, UAP 2-5 TTI interval, DAP 2-5 TTI interval. In fig. 8, the uplink UAP and the downlink DAP are set to 1 group in the order of fig. 7.

At this time, the following operation is performed.

The mobile station apparatus 100 forms a downlink CQI from a downlink pilot, transmits an uplink pilot for 5 TTIs continuously in an uplink UAP (a1), and transmits the downlink CQI, a response (success/failure of data reception) of the data received last time, and uplink scheduling transmission request information to the base station apparatus 200 in the UAP (a 1: 1).

The base station apparatus 200 calculates an uplink CQI from the uplink pilot, and schedules uplink user data in the UAP2(c1) based on the calculated uplink CQ and the uplink scheduling transmission request information.

Then, scheduling for transmitting uplink scheduling information from the downlink CQI to the downlink DAP1(b1) is performed, and the uplink scheduling information is transmitted to the mobile station apparatus 100.

Here, the uplink scheduling information is sent at the DAP (b 1: 2). In addition, the scheduling for transmitting the uplink scheduling information does not necessarily use the downlink CQI transmitted at the UAP (a 1: 1).

The mobile station apparatus 100 performs reception processing at DAP (b1), extracts data and control information to the own station apparatus, and performs processing. Here, since DAP1(b 1: 2) has control information, the processing is performed.

The mobile station apparatus 100 forms a downlink CQI from the downlink pilot, transmits the uplink pilot for 5 consecutive TTIs in the uplink UAP2(c1), and transmits the downlink CQI to the base station apparatus in the UAP2(c 1: 1). The user data is transmitted according to the uplink scheduling information at the UAP2(c 1: 3).

When the base station apparatus 200 receives the downlink CQI, the data scheduled to the mobile station apparatus 100 is performed at the downlink DAP2(d 1). Then, scheduling is performed for returning a response to the uplink user data.

Base station apparatus 200 transmits a response of uplink user data to downlink DAP2(d 1: 1), and transmits downlink user data to downlink DAP2(d 1: 2) and (d 1: 2).

The UAPs (a2, c2) and DAPs (b2, d2) perform transmission/reception processing by the mobile station apparatus 100 and the base station apparatus 200 in the same manner. The transmission process and the reception process of the mobile station apparatus 100 are stopped in a period other than the UAP and the DAP.

Thus, intermittent reception with suppressed power consumption is performed while performing radio channel dependent scheduling using the latest CQI information.

When there is no data, the mobile station apparatus 100 transmits only the uplink pilot and the downlink CQI, and the base station apparatus 200 calculates the uplink CQI from only the uplink pilot.

When the mobile station device 100 has data to transmit, an uplink scheduling request is made during the UAP period to transition to the parameters No1-No4 (see fig. 13 described later), or when the base station device 200 has data to transmit to the mobile station device 100, the ue transitions to the parameters No1-No4 (see fig. 13 described later).

[ working example 6]

Fig. 9 shows an operation example 6 in which the amounts of data in the downlink and uplink are small.

The parameters for control are set as follows: DCFC1 is 80TTI interval, USC1 is 80TTI interval, DSC1 is 80TTI interval, UAP1 is 5TTI interval, DAP1 is 5TTI interval, and the data parameters are: DCFC 2-80 TTI interval, USC 2-80 TTI interval, DSC 2-80 TTI interval, UAP 2-5 TTI interval, DAP 2-5 TTI interval.

In the case of fig. 9, unlike fig. 8, 1 group is formed in the order of the downlink DAP and the uplink UAP.

The operation in this case was basically the same as in operation example 5.

[ working example 7]

Fig. 10 shows an operation example 7 in which the amounts of data in the downlink and uplink are small.

The parameters for control are set as follows: DCFC1, USC1, DSC1, UAP1, DAP1, and data parameters are as follows: DCFC 2-80 TTI interval, USC 2-80 TTI interval, DSC 2-80 TTI interval, UAP 2-5 TTI interval, DAP 2-5 TTI interval.

The case of fig. 10 differs from that of fig. 9 in that the UAP and DAP of the control parameters are set to 1TTI intervals, and the UAP and DAP of the control parameters are set to minimum units, whereby scheduling corresponding to the radio transmission path can be performed while suppressing power consumption.

The operation in this case was basically the same as in operation example 5.

The interval between these control parameters and data parameters is set to a minimum value that can be reflected in the control information, i.e., 5TTI, which is the most efficient.

[ working example 8]

Fig. 11 shows an example of a case of the mobile station apparatus 100 having parameters of 2 DCFC-10 TTI intervals, USC-10 TTI intervals, DSC-10 TTI intervals, UAP-5 TTI intervals, and DAP-5 TTI intervals. At this time, the mobile station apparatus 100₁(UE1) and mobile station device 100₂(UE2) alternately becomes Active Period in the downlink and uplink.

The operation at this time was basically the same as in operation example 1.

By allocating the mobile station in this manner, the radio resource can be efficiently used.

[ working example 9]

Fig. 12 shows an example of a case of a mobile station apparatus 100 having a plurality of parameters (10 mobile station apparatuses: UE1 to UE10) including a DCFC of 10TTI interval, a DSC of 10TTI interval, a UAP of 5TTI interval, and a DAP of 5TTI interval.

The UE1 and the UE6 are alternately configured to be Active Period, and the UEs 1 to 5 and the UEs 6 to 10 are configured to be staggered at 1TTI intervals. In this way, the downlink CQI can be always transmitted at the head of the UAP. In this case, uplink pilots transmitted from the mobile station apparatuses 100 can be multiplexed using Distributed FDMA or CDMA.

[ parameters for improving radio quality ]

As shown in fig. 13(a) and 13(B), the uplink and downlink designations DCFC, USC, DSC, UAP, and DAP are divided.

In a real-time service and a large amount of data (for example, an image distribution service, a TV phone, or the like), the USC, UAP, DAP, DCFC, 5TTI is assumed.

When the real-time service is performed and the data amount is small (for example, VoIP), the USC, DCFC, and UAP, DAP, are 10 TTIs and 5 TTIs, respectively.

When the amount of data is large (for example, FTP) in the non-real-time service, the USC (DSC) is 20TTI, and the UAP (DAP) is 5 TTI.

When the amount of data is small (e.g., chat) and the amount of non-real-time service is not real-time, the USC, DCFC, and UAP, DAP, are 40 TTIs and 5 TTIs, respectively.

With such a setting, a certain amount of data can be transmitted in a certain period in the real-time service, and power consumption can be reduced while ensuring a scheduling area for a mobile station apparatus 100 with a small amount of data.

Also, parameters are prepared for the following cases.

When the radio quality is poor, an error occurs and resources are wasted even if data is transmitted as in the mobile station apparatus 100 having good radio quality.

Therefore, when the radio channel quality is poor (Low CQI), the USC, DCFC, DAP, and 5 TTIs are set to 40 TTIs and 5 TTIs, respectively.

In the table of fig. 13, the service type is aligned with the radio environment, but for example, it may be configured to perform parameter setting corresponding to the radio quality for each service.

When Web browsing is performed by connecting to the internet, it is necessary to secure a state of connecting to a communication link even if there is no data. In this case, when there is No data but a communication link is to be secured (No Packet), the USC (DSC) and the UAP (DAP) are 80TTI and 5TTI, respectively.

The base station apparatus 200 notifies the mobile station apparatus 100 of the parameter in the initial connection procedure with the mobile station apparatus 100. Then, the mobile station apparatus 100 notifies the base station apparatus 200 of information for the base station apparatus 200 to specify the parameter. Alternatively, the mobile station apparatus 100 determines the parameters and notifies the base station apparatus 200.

In real-time services (for example, video distribution, video services such as TV phones, VoIP, etc.), a certain amount of data must be transmitted for a certain period of time. The priority of data transmission must be increased.

On the other hand, in the non-real-time service generated in the past, such as FTP or chat, the priority rate of data transmission may be low.

Therefore, the priority is set to be highest when the real-time service and the transmission data amount are large, the priority is set to be 2 nd when the real-time service and the transmission data amount are small, the priority is set to be 3rd when the non-real-time service and the data amount are large, and the priority is set to be 4 th when the non-real-time service and the data amount are small. In addition, even when the Low CQI, that is, the radio channel environment is poor in the service content, the priority is lowered and transmission is performed. The transmission priority is lowest when only control information is exchanged without data.

These parameter settings are included in an rrc (radio resource control) message at the time of radio bearer installation, and are set at the time of installation of each service. These parameters can be controlled in TTI units by using RRC messages in the same manner or using a physical layer control signal or a MAC control signal to change settings more frequently.

In order to reduce the amount of information of the control signal, the table values shown in fig. 13 are held in the base station apparatus 200 and the mobile station apparatus 100, and only the type numbers thereof are exchanged. Alternatively, it is also possible to raise or lower the 1-bit handshake DSC or USC in TTI units, for example. In addition, a plurality of these parameters may be provided depending on the case.

[ working example 10]

When the traffic of the expected periodic capacity and the traffic of the dynamic capacity coexist, it is effective to transmit the traffic of the expected periodic capacity for the first 1TTI of the UAP or DAP at a fixed time and dynamically schedule the traffic of the dynamic capacity for the remaining TTI.

Fig. 14 shows an example of a case where the parameters shown in fig. 13 are assigned to each mobile station apparatus (UE) 100.

In this case, for example, when scheduling is performed during U1, the mobile station devices 100 of UEs 1, 2, 6, and 8 become scheduling targets, but first the mobile station device 100 scheduling UE1 and the mobile station device scheduling UE2 the 2 nd have the highest priority, and if the allocation area remains, scheduling of UE6 and UE8 is performed in this order.

As shown in fig. 12, the mobile station apparatuses may be allocated with a shift every 1 TTI.

[ working example 11]

In the above-described operation example 10, since the number of mobile station devices 100 of the parameter 1 or the parameter 2 is reduced, an example of grouping and scheduling the mobile station devices 100 of the same parameter is shown in fig. 15.

The mobile station devices 100 of parameter 1 are grouped into 1 Group of U-Group1, the mobile station devices of parameter 2 are grouped into 2 groups of U-Group2, 3, and the mobile station devices of parameter 3 are grouped into 4 groups of U-Group4, 5, 6, 7. The mobile station devices of parameter 4 are grouped into 8 groups of U-Group8 to U-Group 15.

In this case, for example, when scheduling is performed during U1, the mobile station devices 100 of U-Group1, 2, 4, and 8 become scheduling targets, but first the mobile station device 100 that schedules U-Group1 first and the mobile station device 100 that schedules Group2 second are scheduled sequentially from Group4 to Group8 if the allocation area remains.

Thus, more mobile station apparatuses 100 can be accommodated by grouping.

Further, as shown in fig. 16, Active Period can be changed by a service.

[ working example 12]

When the quality of the wireless transmission path is poor, the occurrence of communication errors increases, and even if resources are allocated, resources are wasted.

When scheduling is performed by a radio channel, if the radio channel quality deteriorates, the possibility of allocating radio resources decreases, and the downlink pilot reception process and the uplink pilot transmission process become unnecessary (power consumption is wasted unnecessarily), so that the transmission/reception halt interval is made longer and power consumption is reduced.

When the quality of the wireless transmission path is poor, the handover process to the cell with good quality of the wireless transmission path is executed. Since the handover is performed to a cell having a high radio channel quality, it is necessary to measure the radio channel quality of the neighboring cells.

In order to measure the radio channel quality of the cells around the cell, the radio channel quality is measured after synchronizing with the downlink of a certain cell, and therefore, a certain amount of time is required. Normally, the base station apparatus 200 designates and measures the radio channel quality of other cells.

Therefore, when the radio channel quality is poor, the transmission/reception suspension interval is increased, and the following shows a case where the radio channel quality measurement of another cell is performed in the transmission/reception suspension interval.

Here, DCFC-40 TTI interval, USC-40 TTI interval, DSC-40 TTI interval, UAP-5 TTI interval, and DAP-5 TTI interval are described (fig. 17).

In general, downlink reception is repeated in 6 to 10TTI intervals, and reception is stopped in 11 to 40 and 1 to 5TTI intervals. The reception halt interval is used for quality measurement of peripheral cells.

In the quality measurement of the peripheral cells, when the quality of the peripheral cells of the same frequency is measured, the measurement is performed using 11 to 40, 1 to 5 of the TTI interval. When measuring the quality of the surrounding cells of different frequencies, there is transmission using uplink in 1 to 5 of the TTI section, and switching to different frequencies is not possible, and since measurement is not possible, quality measurement of different frequencies is performed in 11 to 40 of the TTI section.

Is formulated as follows.

Other cell measurement periods (different frequencies: Inter-frequency)

＝DSC-DAP-UAP

Other cell measurement periods (same frequency: Intra-frequency)

＝DSC-DAP

In addition, the measurement period of other cells of the same frequency can be the same as the measurement period of other cells of a different frequency.

During the presentation, quality measurements of other cells are performed. When the mobile station apparatus 100 needs to measure the quality of another cell, the base station apparatus 200 can change to a parameter by which the mobile station apparatus 100 can measure the quality of another cell. The mobile station apparatus performs quality measurement of other cells within the range of the supplied parameters.

Thus, the base station apparatus can measure in the normal scheduling without resetting the period for the mobile station apparatus to measure the quality of other cells.

As described above, by setting the transmission/reception stop section for each of the uplink and downlink according to the service content, power consumption of the mobile station apparatus can be suppressed, and transmission/reception is controlled according to the service content, so that scheduling of the base station apparatus is simplified.

Claims (8)

1. A wireless communication system comprising a base station device and a mobile station device, characterized in that:

the base station apparatus includes: a unit that includes, in an RRC message, parameters including a DAP, which is a period during which the mobile station apparatus intermittently receives a downlink control channel, that is, a period during which the mobile station apparatus can receive control information or user data from the base station apparatus, and a DSC, which is a period during which the DAP is intermittently repeated,

the mobile station apparatus includes: and a unit configured to receive the RRC message, and set the DSC and the DAP included in the parameters for the intermittent reception, according to the RRC message.

2. The wireless communication system of claim 1, wherein:

and sending the wireless resource scheduling information of the downlink data channel configured in the same time slot with the downlink control channel through the downlink control channel.

3. A base station apparatus for communicating with a mobile station apparatus, comprising:

a unit that includes parameters including a DAP, which is a period during which the mobile station apparatus intermittently receives a downlink control channel, that is, a period during which the mobile station apparatus can receive control information or user data from the base station apparatus, and a DSC, which is a period during which the DAP is intermittently repeated, in an RRC message and transmits the RRC message to the mobile station apparatus.

4. The base station apparatus according to claim 3, wherein:

and sending the wireless resource scheduling information of the downlink data channel configured in the same time slot with the downlink control channel through the downlink control channel.

5. A mobile station apparatus for communicating with a base station apparatus, comprising:

a unit that receives an RRC message from the base station apparatus, the RRC message including a parameter including a DAP and a DSC, the DAP being a period for intermittently receiving a downlink control channel, that is, a period in which the mobile station apparatus can receive control information or user data from the base station apparatus, the DSC being a period in which the DAP is intermittently repeated,

means for setting the DSC and the DAP included in the parameters for the intermittent reception, in accordance with the RRC message.

6. The mobile station apparatus of claim 5, wherein:

and acquiring the wireless resource scheduling information of a downlink data channel configured in the same time slot with the downlink control channel from the downlink control channel.

7. A processing method of a mobile station apparatus communicating with a base station apparatus, characterized in that:

receiving, from the base station apparatus, an RRC message including a parameter including a DAP and a DSC, the DAP being a period for intermittently receiving a downlink control channel, that is, a period during which the mobile station apparatus can receive control information or user data from the base station apparatus, the DSC being a period in which the DAP is intermittently repeated,

setting the DSC and the DAP included in the parameters for the intermittent reception according to the RRC message.

8. A processing method of a base station apparatus communicating with a mobile station apparatus, comprising:

parameters including a DAP, which is a period during which the mobile station apparatus intermittently receives a downlink control channel, that is, a period during which the mobile station apparatus can receive control information or user data from the base station apparatus, and a DSC, which is a period during which the DAP is intermittently repeated, are included in an RRC message and transmitted to the mobile station apparatus.