WO2009116643A1 - ユーザ装置、基地局装置及び移動通信方法 - Google Patents
ユーザ装置、基地局装置及び移動通信方法 Download PDFInfo
- Publication number
- WO2009116643A1 WO2009116643A1 PCT/JP2009/055501 JP2009055501W WO2009116643A1 WO 2009116643 A1 WO2009116643 A1 WO 2009116643A1 JP 2009055501 W JP2009055501 W JP 2009055501W WO 2009116643 A1 WO2009116643 A1 WO 2009116643A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- base station
- cell
- user apparatus
- measurement
- priority
- Prior art date
Links
- 238000010295 mobile communication Methods 0.000 title claims description 29
- 238000000034 method Methods 0.000 title claims description 28
- 238000005259 measurement Methods 0.000 claims abstract description 180
- 238000012545 processing Methods 0.000 claims abstract description 109
- 238000004891 communication Methods 0.000 claims abstract description 61
- 230000007704 transition Effects 0.000 claims description 15
- 230000008569 process Effects 0.000 claims description 13
- 230000005540 biological transmission Effects 0.000 description 42
- 238000010586 diagram Methods 0.000 description 9
- 238000012790 confirmation Methods 0.000 description 6
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000007726 management method Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 230000003044 adaptive effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000007562 laser obscuration time method Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000013507 mapping Methods 0.000 description 2
- 230000011664 signaling Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
- H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
- H04W36/0085—Hand-off measurements
- H04W36/0088—Scheduling hand-off measurements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
- H04W36/0033—Control or signalling for completing the hand-off for data sessions of end-to-end connection with transfer of context information
- H04W36/0044—Control or signalling for completing the hand-off for data sessions of end-to-end connection with transfer of context information of quality context information
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
- H04J11/0069—Cell search, i.e. determining cell identity [cell-ID]
Definitions
- the present invention relates to a user apparatus configured to perform communication with a base station apparatus, a base station apparatus configured to perform communication with a user apparatus, and a user apparatus and a base station apparatus
- the present invention relates to a mobile communication method for communicating with a mobile phone.
- UE User Equipment
- serving Cell Serving Cell
- a user apparatus moves to an adjacent cell and a signal from the adjacent cell becomes stronger than a signal from the serving cell, the user apparatus performs handover to the adjacent cell.
- the user apparatus performs handover according to the procedure shown in FIG.
- step S1 the user apparatus measures the communication quality (signal power of the adjacent cell) in the adjacent cell.
- step S2 it is confirmed whether or not the communication quality in the adjacent cell (signal power of the adjacent cell) satisfies the following expression.
- the report to the base station apparatus is performed by a “Measurement Report”.
- the offset is a value provided to prevent frequent handover from the serving cell to the adjacent cell at the cell boundary, and may be a positive value or a negative value.
- a negative value is set in the above formula.
- step S3 when the base station apparatus receives the measurement report reporting the above-described event A3, the base station apparatus determines that the user apparatus should be handed over to the neighboring cell in which the above-described event A3 is reported, Perform the handover procedure.
- the base station apparatus notifies the user apparatus UE of a message instructing handover, that is, a handover command (Handover Command).
- the above-described event A3 is an event related to measurement of a neighboring cell having the same frequency as the serving cell.
- the LTE Long Term Evolution
- RSRP Reference Signal Received Power
- RS-SIR Reference Signal-Signal-to-Interference Ratio
- E-UTRA Carrier RSSI Receiveived Signal Strength Indicator
- RSSI Reference Signal Strength Indicator
- the handover destination is a cell having the same frequency.
- the handover destination may be not only a cell having the same frequency in the same system but also a cell having a different frequency in the same system. It may be a cell using a radio access technology (RAT).
- RAT radio access technology
- the frequency of a cell using a different radio access technology is generally a frequency different from that of the handover source, the frequency of the handover destination cell is necessarily different from the frequency of the handover source cell.
- FIG. 2 schematically shows how handover between different frequency cells is performed.
- an LTE mobile communication system including a mobile communication system having a first frequency f1 and a mobile communication system having a second frequency f2, and a W-CDMA mobile communication system using a frequency f3 different from f1 and f2. Is shown.
- the base station apparatus is configured with 2 cells composed of a cell having the second frequency f2 and a cell having the third frequency f3 for the user apparatus communicating with the mobile communication system having the first frequency f1.
- One layer can be instructed to make measurements of cells.
- each frequency such as the first frequency f1, the second frequency f2, and the third frequency f3 is referred to as a layer. That is, in FIG. 2, there are three layers: a first layer having the first frequency f1, a second layer having the second frequency f2, and a third layer having the third frequency f3.
- a user apparatus since a user apparatus includes only one radio signal processing unit, it is not possible to simultaneously transmit and receive signals for different frequencies.
- the base station apparatus uses the “RRC message” for controlling the measurement to set the “gap period length”, “the period of the gap period”, “the frequency of the different frequency cell”, and the like to the user apparatus.
- the user apparatus performs different frequency measurement (including processing such as frequency change, synchronization channel acquisition, communication quality measurement, frequency change, etc.) in the specified gap period.
- the “different frequency measurement” in the present application is a concept including not only searching for a different frequency cell and measuring its communication quality but also searching for a cell of a different RAT and measuring its communication quality.
- the base station apparatus may specify a layer of the second frequency f2 and a layer of the third frequency f3 as layers to be measured for the user apparatus.
- the user apparatus performs measurement of neighboring cells (Measurement).
- Such measurement is instructed from the network, more specifically, from the base station apparatus. That is, the user apparatus measures a neighboring cell according to “Measurement Configuration” provided from the base station apparatus, and reports the measurement result of the communication quality in the neighboring cell to the base station apparatus.
- Measurement Configuration is provided to the user apparatus in the RRC_Connected connection state by individual signaling, for example, RRC CONNECTION RECONFIGURATION message.
- the base station apparatus can specify a plurality of layers as layers to be measured for the user apparatus.
- the base station apparatus can designate the layer of the second frequency f2 and the layer of the third frequency f3 as layers to be measured for the user apparatus.
- the user apparatus performs the measurement of the layer of the second frequency f2 and the measurement of the layer of the third frequency f3 in the gap period described above.
- the user apparatus performs the measurement of the layer of the second frequency f2 and the measurement of the layer of the third frequency f3 in the gap period described above.
- FIG. 3 there are a method of measuring the layer of the second frequency f2 and a layer of the third frequency f3, as shown in FIG.
- the time required for the different frequency measurement is twice as long as when different frequency measurement is performed for one layer.
- the time required for acquisition of the synchronization channel is longer than when different frequencies are measured for one layer, because the measurement is performed with a time delay.
- the time required for measuring the different frequency becomes longer than twice the time required for measuring the different frequency for one layer.
- the time required for different frequency measurement in the case where the different frequency measurement in two layers is performed serially, compared to the case where the different frequency measurement in two layers is performed in parallel.
- the priority of the layer of the third frequency f3 is higher than the priority of the layer of the second frequency f2.
- the handover to the layer of the second frequency f2 is performed first, and then the layer of the third frequency f3 is subsequently performed.
- An event occurs in which measurement is performed and a handover is made to the layer of the third frequency f3.
- the present invention has been made in view of the above-described problems, and notifies the user apparatus in the RRC_Connected state of the priority for each layer, thereby measuring different frequencies of a plurality of layers based on the priority. It is an object of the present invention to provide a user apparatus, a base station apparatus, and a mobile communication method that can realize fast and high-quality different frequency handover and different RAT handover.
- a first feature of the present invention is a user apparatus configured to perform communication with a base station apparatus, and in a connection state in which a radio link is established with the base station apparatus, Based on the first priority notified by the first control signal notified from the base station apparatus, the communication quality in a cell belonging to two or more layers is measured, and the measurement result is sent to the base station apparatus And a connection state processing unit configured to perform handover processing in response to an instruction from the base station device, and a second control signal notified from the base station device in the standby state.
- a standby state processing unit configured to measure communication quality in cells belonging to two or more layers based on two priorities and to determine a cell on which to wait based on the measurement result. And it is required to.
- connection state processing unit and the standby state processing unit may be configured to communicate cells in cells belonging to two or more layers as cells in the same system or in different systems as communication qualities. It may be configured to measure communication quality in
- connection state processing unit and the standby state processing unit may measure communication quality in a cell having a higher priority than measurement of communication quality in a cell having a lower priority. It may be configured to perform first.
- connection state may be an RRC_Connected state
- standby state may be an Idle state
- the first priority is discarded when the user apparatus transitions from the RRC_Connected state to the Idle state, and the second priority is changed from the Idle state to the RRC_Connected state. It may be discarded at the time of transition.
- a second feature of the present invention is a base station device configured to perform communication with a user device, wherein the wireless link is established with the base station device.
- the user equipment is instructed to measure and report the communication quality in cells belonging to two or more layers, the first control signal including the first priority is transmitted, and the first priority is transmitted by the user equipment.
- a handover processing unit configured to determine whether or not the user apparatus should perform a handover process based on communication quality in cells belonging to two or more layers measured based on the degree, and a standby state
- a second control signal including a second priority is transmitted to the user apparatus in order to determine a cell on which to wait by measuring communication quality in cells belonging to two or more layers. And summarized in that includes a cell search processor waiting is configured to.
- communication quality in cells belonging to the two or more layers communication quality in cells in the same system having different frequencies or in cells in different systems may be measured.
- connection state may be an RRC_Connected state
- standby state may be an Idle state
- the first priority is discarded when the user apparatus transitions from the RRC_Connected state to the Idle state, and the second priority is changed from the Idle state to the RRC_Connected state. It may be discarded at the time of transition.
- a third feature of the present invention is a mobile communication method for performing communication between a user apparatus and a base station apparatus, wherein the base station apparatus establishes a radio link with the base station apparatus A step of transmitting a first control signal to instruct a connected user apparatus to measure and report communication quality in cells belonging to two or more layers; and the connected user apparatus includes the base station Based on the first priority notified by the first control signal notified from the device, the communication quality in the cell belonging to the two or more layers is measured, and the measurement result is reported to the base station device And determining whether or not the user apparatus should perform a handover process based on communication quality in a cell belonging to the two or more layers notified by the user apparatus The base station device transmits a second control signal to the standby user device, and the standby user device is notified by the second control signal notified from the base station device.
- the present invention includes a step of measuring communication quality in cells belonging to two or more layers based on the notified second priority, and determining a cell for standby based on the measurement
- FIG. 1 is a flowchart showing a handover operation in a general mobile communication system.
- FIG. 2 is a diagram for explaining different frequency handover and different RAT handover in a general mobile communication system.
- FIG. 3 is a diagram for explaining measurement during handover processing in a general mobile communication system.
- FIG. 4 is an overall configuration diagram of the mobile communication system according to the first embodiment of the present invention.
- FIG. 5 is a diagram illustrating an example of mapping of the downlink reference signal in the first embodiment of the present invention.
- FIG. 6 is a functional block diagram of the user apparatus according to the first embodiment of the present invention.
- FIG. 7 is a functional block diagram of a baseband signal processing unit in the user apparatus according to the first embodiment of the present invention.
- FIG. 1 is a flowchart showing a handover operation in a general mobile communication system.
- FIG. 2 is a diagram for explaining different frequency handover and different RAT handover in a general mobile communication system.
- FIG. 3 is a diagram for explaining
- FIG. 8 is a diagram for explaining a connection form of the user apparatus according to the first embodiment of the present invention.
- FIG. 9 is a diagram for explaining a state change of the user apparatus according to the first embodiment of the present invention.
- FIG. 10 is a functional block diagram of the base station apparatus according to the first embodiment of the present invention.
- FIG. 11 is a flowchart showing an operation of the user apparatus according to the first embodiment of the present invention.
- FIG. 12 is a flowchart showing the operation of the user apparatus according to the first embodiment of the present invention.
- FIG. 13 is a flowchart showing an operation of the base station apparatus according to the first embodiment of the present invention.
- the mobile communication system 1000 is a system to which, for example, the “LTE (Long Term Evolution), Evolved UTRA and UTRAN, or Super 3G” system is applied.
- LTE Long Term Evolution
- Evolved UTRA and UTRAN or Super 3G
- the mobile communication system 1000 includes a base station device (eNB: eNode-B) 200, a plurality of user devices (UE: User Equipment) 1001, 1002, 1003,... 100n (n is an integer where n> 0) Is provided.
- eNB eNode-B
- UE User Equipment
- the base station apparatus 200 is connected to an upper station, for example, the access gateway apparatus 300, and the access gateway apparatus 300 is connected to the core network 400.
- the access gateway device may be referred to as MME / SGW (Mobility Management Entity / Serving Gateway).
- the user apparatus 100n is configured to communicate with the base station apparatus 200 in the cell 50 by the LTE scheme.
- the user apparatus 100n includes both mobile terminals and fixed terminals.
- OFDMA frequency division multiple access
- SC-FDMA single carrier-frequency division multiple access
- OFDMA is a scheme in which a frequency band is divided into a plurality of narrow frequency bands (subcarriers) and data is transmitted on each frequency band. According to OFDMA, it is possible to realize high-speed transmission and increase frequency utilization efficiency by arranging subcarriers closely without interfering with each other while partially overlapping in frequency.
- SC-FDMA is a transmission method that can reduce interference between user apparatuses by dividing a frequency band and performing transmission using different frequency bands among a plurality of user apparatuses. Since SC-FDMA has a feature that fluctuations in transmission power are reduced, it is possible to realize low power consumption and wide coverage of a mobile station.
- a “physical downlink shared channel (PDSCH) shared by each user apparatus 100n” and a “physical downlink control channel (PDCCH: Physical Downlink) that transmits a downlink control signal are used.
- Control Channel Physical Downlink
- the downlink channel is configured by a “physical downlink shared channel (PDSCH)” and a “physical downlink control channel (PDCCH)”.
- PDSCH physical downlink shared channel
- PDCCH physical downlink control channel
- “User information”, “Transport format information”, “Physical uplink shared channel (PUSCH) delivery confirmation information (HARQ ACK information)”, etc. are notified regarding the shared channel (PUSCH: Physical Uplink Shared Channel), User data is transmitted through the “physical downlink shared channel (PDSCH)”.
- the delivery confirmation information (HARQ ACK information) may be transmitted not by the PDCCH but by PHICH (Physical HARQ Indicator Channel).
- the transport channel mapped to the “physical downlink shared channel (PDSCH)” is “downlink shared channel (DL-SCH)”.
- Downlink scheduling information Downlink Scheduling Information
- PUSCH Physical uplink shared channel
- downlink scheduling information and “uplink scheduling grant” may be collectively referred to as “DCI (Downlink Control Information)”.
- DCI Downlink Control Information
- a “downlink reference signal (DL RS)” is transmitted as a pilot signal.
- the “downlink reference signal” is used by the user apparatus 100 n for downlink channel estimation and radio quality measurement.
- FIG. 5 shows a mapping method of the “downlink reference signal”. As shown in FIG. 5, in the LTE scheme, the “downlink reference signal” is mapped to the first, fifth, eighth, and twelfth OFDM symbols in one subframe, and the frequency direction is 6 One subcarrier is mapped at a rate of one.
- PUSCH physical uplink shared channel
- the uplink channel is configured by a “physical uplink shared channel (PUSCH)” and an “uplink control channel for LTE”.
- PUSCH physical uplink shared channel
- the “scheduling” and “adaptive modulation and coding (AMCS) in the“ downlink shared channel (DL-SCH) ”and“ adaptive modulation and coding scheme ” are performed by the“ uplink control channel for LTE ”.
- “Downlink quality information (CQI: Channel Quality Indicator)” and “physical downlink shared channel (PDSCH) delivery confirmation information (HARQ ACK information)” are transmitted, and "physical uplink shared” User data is transmitted via a channel (PUSCH).
- the transport channel mapped to the “physical uplink shared channel (PUSCH)” is “uplink shared channel (UL-SCH)”. That is, the user data is mapped to the “uplink shared channel (UL-SCH)”.
- the user data is, for example, an IP packet based on Web browsing, FTP, VoIP, or the like, a control signal for “RRC (Radio Resource Control) processing”, and is also referred to as packet data.
- RRC Radio Resource Control
- the user data is mapped as a logical channel to, for example, “Dedicated Traffic Channel (DTCH)” or “Dedicated Control Channel (DCCH)”.
- DTCH Dedicated Traffic Channel
- DCCH Dedicated Control Channel
- the mobile station 100n includes an antenna 102, an amplifier unit 104, a transmission / reception unit 106, a baseband signal processing unit 108, a call processing unit 110, and an application unit 112.
- the antenna 102 is configured to receive a downlink signal transmitted by the base station apparatus 200.
- the amplifier unit 104 is configured to amplify the downlink signal (radio frequency signal) received by the antenna 102.
- the transmission / reception unit 106 is configured to perform frequency conversion processing on the radio frequency signal amplified by the amplifier unit 104 and convert the radio frequency signal into a baseband signal.
- the measurement unit 1102 instructs the antenna 102, the amplifier unit 104, and the transmission / reception unit 106 to switch the frequency of the received downlink signal
- the antenna 102, the amplifier unit 104, and the transmission / reception unit 106 switch the frequency of the received downlink signal. It may be configured.
- the measurement control unit 1102 performs “Inter-Frequency Measurements” or “Inter-RAT Measurement”
- the frequency of the layer targeted for the measurement is notified to the antenna 102, the amplifier unit 104, and the transmission / reception unit 106.
- the antenna 102, the amplifier unit 104, and the transmission / reception unit 106 perform processing for switching the frequency of the received downlink signal to the notified frequency.
- the baseband signal processing unit 108 is configured to perform reception processing such as FFT processing and error correction decoding on the baseband signal input from the transmission / reception unit 106.
- the baseband signal processing unit 108 is configured to perform measurement of communication quality in an adjacent cell, that is, “Measurement” using a downlink reference signal.
- the “Measurement” may be, for example, “Intra-frequency Measurement” for measuring cells of the same frequency, or “Inter-frequency Measurement” for measuring cells of different frequencies. Also, “Inter-RAT Measurement” for measuring cells of different systems may be used.
- the application unit 112 is configured to input user data for uplink to the baseband signal processing unit 108.
- the application unit 112 is configured to perform processing related to a higher layer than the physical layer, the MAC layer, the RLC layer, and the PDCP layer.
- the baseband signal processing unit 108 performs splitting / combining processing, transmission processing in the RLC layer such as RLC (Radio Link Control) retransmission control, and MAC layer such as H-ARQ (Hybrid ARQ) retransmission control on the user data.
- RLC Radio Link Control
- MAC layer such as H-ARQ (Hybrid ARQ) retransmission control on the user data.
- a transmission process, a channel encoding process, a DFT process, an IFFT process, and the like are performed, and then transferred to the transmission / reception unit 106.
- the measurement control unit 1102 in the call processing unit 110 determines to transmit “Measurement Report” to the base station apparatus 200
- the measurement control unit 1102 transmits the “Measurement Report” to the baseband signal processing unit 108 (RLC processing). Unit 1089).
- the baseband signal processing unit 108 also performs the “Measurement Report” in the RLC layer such as the division / combination processing, RLC retransmission control, H-ARQ retransmission control, etc.
- the data is transferred to the transmission / reception unit 106.
- the “Measurement Report” is mapped to, for example, “DCCH (DTCH: Dedicated Control Channel)” as a logical channel.
- the transmitting / receiving unit 106 is configured to perform frequency conversion processing on the baseband signal input from the baseband signal processing unit 108 and convert the baseband signal into a radio frequency signal.
- the amplifier unit 104 is configured to amplify the radio frequency signal input by the transmission / reception unit 106 and transmit the signal via the antenna 102.
- the baseband signal processing unit 108 includes an analog / digital converter (A / D) 1080, a CP removal unit 1081, a fast Fourier transform unit (FFT) 1082, a separation unit (DeMUX) 1083, and a data signal decoding unit 1084.
- the analog / digital converter (A / D) 1080 is configured to convert the baseband signal (analog signal) input from the transmission / reception unit 106 into a digital signal and input the digital signal to the CP removal unit 1081. Yes.
- the CP removing unit 1081 is configured to remove “CP (Cyclic Prefix)” from the received symbol, leave an effective symbol part, and input the effective symbol part to a fast Fourier transform unit (FFT) 1082.
- FFT fast Fourier transform
- the fast Fourier transform unit (FFT) 1082 performs fast Fourier transform on the signal input from the CP removal unit 1081, then performs OFDM demodulation, and inputs the demodulated signal to the separation unit (DeMUX) 1083. Is configured to do.
- the demultiplexing unit (DeMUX) 1083 demultiplexes the downlink reference signal and the data signal from the signal input by the fast Fourier transform unit (FFT) 1082, and sends the demultiplexed downlink reference signal to the downlink reference signal receiving unit 1085.
- the input and separated data signal is input to the data signal decoding unit 1084.
- the separation unit (DeMUX) 1083 is configured to separate the synchronization signal from the signal input by the fast Fourier transform unit (FFT) 1082 and input the separated synchronization signal to the synchronization signal reception unit 1087. .
- the synchronization signal may be separated from the signal input by the fast Fourier transform unit (FFT) 1082, or after the processing of the analog / digital converter (A / D) 1080 is performed. May be separated from the signal.
- FFT fast Fourier transform unit
- the downlink referenceless signal receiving unit 1085 performs channel estimation based on the downlink reference signal input from the demultiplexing unit (DeMUX) 1083 and determines what channel compensation should be performed on the received data signal. It is configured to determine, that is, calculate a channel estimate.
- DeMUX demultiplexing unit
- the downlink referenceless signal receiving unit 1085 is configured to input the calculated channel estimation value to the data signal decoding unit 1084.
- the downlink referenceless signal receiving unit 1085 is configured to input the downlink reference signal and the channel estimation value to the measurement unit 1086.
- the downlink reference signal receiving unit 1085 is configured to notify the measurement unit 1086 of the signal of the layer performing “Inter-frequency Measurement” together with the downlink reference signal and the channel estimation value.
- the data signal decoding unit 1084 is configured to compensate the data signal based on the channel estimation value input from the downlink referenceless signal receiving unit 1085 and restore the data signal transmitted by the base station apparatus 200. Yes.
- the data signal is a signal transmitted by the base station apparatus 200 via a “broadcast channel”, a “downlink shared channel (DL-SCH)”, or a “downlink control channel”.
- DL-SCH downlink shared channel
- the “broadcast channel” is more specifically a “physical broadcast channel (P-BCH)” or “dynamic broadcast channel (D-BCH)”.
- the signal transmitted via the “downlink control channel” refers to “downlink scheduling information”, “uplink scheduling grant”, “uplink” mapped to the “physical downlink control channel (PDCCH)”. Shared channel delivery confirmation information ”and the like.
- the data signal decoding unit 1084 is configured to input the decoded data signal to the MAC processing unit 1088.
- the data signal decoding unit 1084 acquires information included in the “physical broadcast channel (P-BCH)” and “dynamic broadcast channel (D-BCH)”, and each unit in the user apparatus 100n as necessary. Configured to notify.
- Measurement Configuration included in the data signal is configured to be sent to the Measurement control unit 1102 in the call processing unit 110 via the MAC processing unit 1088 and the RLC processing unit 1089.
- the measurement unit 1086 is configured to measure the communication quality in the adjacent cell based on the “downlink reference signal” and the “channel estimation value” input from the downlink reference signal receiving unit 1085.
- the Measurement unit 1086 is configured to perform “Intra-frequency Measurement” for measuring cells of the same frequency and “Inter-frequency Measurement” for measuring cells of different frequencies.
- the Measurement unit 1086 may be configured to measure RSRP, RSSI, RSRQ, Pathloss, RS-SIR, and the like as the communication quality in the neighboring cell.
- the user apparatus 100n communicates with the base station apparatus 200 in the first layer, and the base station apparatus 200 performs the second layer and the third layer with respect to the user apparatus 100n.
- the base station apparatus 200 performs the second layer and the third layer with respect to the user apparatus 100n.
- the second layer has the highest priority
- the third layer has the second highest priority
- the fourth layer has the third highest priority. It shall be granted.
- the priority given to each layer may be included in, for example, “Measurement Configuration”.
- the base station apparatus 200 may notify the priority for each layer to the user apparatus 100n by “Measurement Configuration”.
- the Measurement unit 1086 performs “Inter-frequency Measurement” of the second layer first, and “Inter-frequency Measurement” of the third layer based on the priority for each layer. And thirdly, “Inter-frequency Measurement” of the fourth layer is performed.
- the Measurement unit 1086 is configured to perform “Inter-frequency Measurement” in order from the higher priority layer based on the priority for each layer.
- the “Inter-frequency Measurement” includes a synchronization signal capturing process performed by a synchronization signal receiving unit 1087 described later.
- the measurement unit 1086 is configured to switch the frequency to be measured in “Measurement gaps (gap period)” managed by the measurement control unit 1102 described later based on the above-described priority. May be.
- the Measurement unit 1086 may be configured to perform “Inter-frequency Measurement” by determining a frequency to be measured in “Measurement gaps (gap period)” based on the priority of each layer. .
- the measurement unit 1086 and the measurement control unit 1102 satisfy the condition for transmitting “Measurement Report” to the base station apparatus 200 even if measurement of all layers is not completed, as needed. It may be configured to transmit “Measurement Report”.
- the “Measurement Report” related to the higher priority layer is transmitted from the user apparatus 100n to the base station apparatus 200 without waiting for the measurement of the lower priority layer to end.
- the measurement of two or more layers is all “Inter-frequency Measurement”, but the measurement of two or more layers may include “Inter-RAT Measurement”. .
- the user apparatus 100n includes a baseband signal processing unit related to the RAT, and performs “Measurement” related to the RAT.
- the synchronization signal receiving unit 1087 is configured to acquire a cell ID by capturing a synchronization signal of an adjacent cell, that is, a neighboring cell, using a downlink synchronization signal.
- the synchronization signal receiving unit 1087 is configured to capture a synchronization signal of a cell in a layer that performs “Inter-frequency Measurement”.
- the MAC processing unit 1088 receives “downlink scheduling information”, “uplink scheduling grant”, “delivery confirmation information for the uplink shared channel (UL-SCH)” and the like decoded by the data signal decoding unit 1084. It is configured.
- the MAC processing unit 1088 is configured to perform transmission processing such as determination of the transmission format of user data for uplink and HARQ retransmission control in the MAC layer based on the input “uplink scheduling grant”. ing.
- uplink scheduling grant input from data signal decoding section 1084 instructs base station apparatus 200 to perform communication using “uplink shared channel (UL-SCH)”.
- the MAC processing unit 1088 performs transmission processing such as transmission format determination and HARQ retransmission control on the user data existing in the data buffer in the user apparatus 100n, and then inputs the user data to the signal generation unit 1090. It is configured.
- the MAC processing unit 1088 performs, for example, reception processing for MAC retransmission control on user data for downlink based on “downlink scheduling information” received from the data signal decoding unit 1084. It is configured as follows.
- the RLC processing unit 1089 performs transmission processing in the RLC layer such as division / combination processing and RLC retransmission control transmission processing on user data for the uplink, and for user data for the downlink. It is configured to perform reception processing in the RLC layer such as division / combination processing and reception processing of RLC retransmission control.
- the RLC processing unit 1089 may be further configured to perform processing in the PDCP layer.
- the RLC processing unit 1089 is configured to notify the call processing unit 110 of information included in “broadcast information” and “RRC message” transmitted by the base station apparatus 200.
- the signal generation unit 1090 transmits an “uplink shared signal”, “Sounding RS”, and “uplink control signal” to be transmitted in the uplink, for example, “downlink quality information (CQI)” and “downlink shared channel (DL -SCH) delivery confirmation information "and” random access preamble signal (random access channel signal) "and other signal generation processing, for example, processing such as encoding and data modulation, the transmission processing unit 1091 Configured to send to.
- CQI downlink quality information
- DL -SCH downlink shared channel
- the transmission processing unit 1091 is configured to perform transmission processing such as DFT processing, IFFT processing, and CP insertion processing on the signal input by the signal generation unit 1090.
- the call processing unit 110 includes a measurement control unit 1102.
- the call processing unit 110 is configured to perform call processing such as setting of a communication channel, handover and release, and state management of the mobile station 100n.
- the call processing unit 110 receives “broadcast information” and “RRC message” transmitted from the base station apparatus 200, and if necessary, includes information included in the “broadcast information” and “RRC message”. It is configured to notify each unit of the mobile station 100n.
- the Measurement control unit 1102 is configured to control and manage “Measurement” in the user apparatus 100n.
- the measurement control unit 1102 is configured to perform management and control on “Measurement” based on “Measurement Configuration” transmitted by the base station apparatus 200.
- “Measurement type” is a parameter indicating the type of measurement. Specifically, “Measurement type” includes “Intra-frequency Measurement” for measuring cells of the same frequency, “Inter-frequency Measurement” for measuring cells of different frequencies, and “Inter-frequency Measurement” for measuring UTRA cells. “RAT Measurement of UTRA frequencies”, “Inter-RAT Measurement of GERAN frequencies” and the like for measuring GSM cells are set.
- Measurement objects is a parameter related to a measurement target. Specifically, for example, a frequency to be measured, a cell ID, or the like is set in “Measurement objects”.
- Reporting configurations is a parameter related to reporting of measurement results. Specifically, “Reporting configurations” includes a reporting trigger such as reporting when an event occurs or reporting periodically, a “hysteresis value” when reporting when an event occurs, and “Time value”. to Trigger value ", a reporting cycle when periodically reporting, and the like are set. In addition, “Reporting configurations” may include parameters relating to the report format, such as the number of cells to be reported.
- Measurement identities is a parameter related to an ID for reference when reporting a measurement result.
- Quadratity configurations is a parameter relating to a value to be measured, and corresponds to, for example, the above-described RSRP or RSRQ.
- Quadantity configurations may include a parameter for filtering the measurement result.
- Measurement gaps is a parameter related to the gap period used by the user apparatus 100n for measurement.
- the Measurement control unit 1102 is configured to notify the Measurement unit 1086 of “Measurement Configuration”.
- the Measurement control unit 1102 when the priority of each layer in “Inter-frequency Measurement” or “Inter-RAT Measurement” is given to “Measurement Configuration”, the Measurement control unit 1102 also sets the priority of each layer. , The Measurement unit 1086 is notified.
- Measurement control unit 1102 may be notified of not only the priority related to the layer to be measured but also the priority related to the layer with which the user apparatus 100n is communicating by “Measurement Configuration”.
- the Measurement control unit 1102 is configured to manage gap information based on “Measurement gaps” included in “Measurement Configuration”.
- the measurement control unit 1102 determines the frequency of the received downlink signal to the antenna 102, the amplifier unit 104, and the transmission / reception unit 106 in the set gap period based on “Measurement gaps”. Instruct to switch.
- the measurement control unit 1102 is configured to determine the frequency of the downlink signal to be received based on the priority of the layer that performs the measurement, as described above.
- the measurement control unit 1102 determines the frequency of the downlink signal to be received so that “Measurement” can be performed in order from the cell of the layer with the highest priority, and the determined frequency is determined by the antenna 102 and the amplifier unit 104. And the transmission / reception unit 106.
- the “Measurement Configuration (first control signal) notified from the base station apparatus 200 is provided. ”Is used to measure the communication quality in cells belonging to two or more layers, and the measurement result is reported to the base station apparatus 200. In response to an instruction from the base station apparatus 200, Accordingly, it is configured to perform a handover process accordingly.
- the measurement control unit 1102 sends the first priority (priority for each layer) notified by the “Measurement Configuration (first control signal)” notified from the base station apparatus 200 to the measurement unit 1086. Configured to notify.
- the Measurement unit 1086 is configured to measure the communication quality in cells belonging to two or more layers based on the first priority, that is, to perform “Measurement”.
- the call processing unit 110 is configured to perform a handover process in response to an instruction from the base station apparatus 200.
- the user apparatus 100n has 2 in the idle state (standby state) based on the second priority notified by the second control signal notified from the base station apparatus 200 (for example, broadcast information, RRC message, etc.). It is configured to measure communication quality in cells belonging to more than one layer and determine a cell for standby based on the measurement result.
- the measurement control unit 1102 is configured to notify the measurement unit 1086 of the second priority (priority for each layer) notified by the second control signal notified from the base station apparatus 200. ing.
- the Measurement unit 1086 is configured to measure the communication quality in cells belonging to two or more layers based on the second priority, that is, to perform “Measurement”.
- the call processing unit 110 is configured to determine a cell on which to wait based on the measurement result, that is, to perform “Cell Reselection”.
- the user apparatus 100n is configured to measure the communication quality in a cell having a higher priority before measuring the communication quality in a cell having a lower priority.
- the user apparatus 100n discards the first priority when the user apparatus 100n transitions from the RRC_Connected state to the Idle state, and changes the first priority when the user apparatus 100n transitions from the Idle state to the RRC_Connected state. It is configured to discard 2 priorities.
- state 1 is a state in which the user apparatus 100n is in the idle state, and the priority is notified by the broadcast information (System Information).
- the state 2 is a state in which the user apparatus 100n is in the idle state and the priority is notified by individual signaling.
- the state 3 is a state in which the user apparatus 100n is in the RRC_Connected state and the priority is not notified.
- the state 4 is a state in which the user apparatus 100n is in the RRC_Connected state and the priority is notified.
- state 2 when the predetermined timer expires or moves to another PLMN (event 2), the state of the user apparatus 100n transitions to state 1.
- the state of the user apparatus 100n is the state 3 Transition to.
- the base station apparatus 200 includes a transmission / reception antenna 202, an amplifier unit 204, a transmission / reception unit 206, a baseband signal processing unit 208, a call processing unit 210, and a transmission path interface 212. ing.
- the transmission / reception antenna 202 is configured to transmit / receive an uplink signal and a downlink signal to / from the user apparatus 100n.
- the amplifier unit 204 is configured to amplify the uplink signal (radio frequency signal) received by the transmission / reception antenna 202 and the downlink signal (radio frequency signal) input by the transmission / reception unit 206.
- the transmission / reception unit 206 is configured to perform a frequency conversion process on the radio frequency signal amplified by the amplifier unit 204 and convert it to a baseband signal. Further, the baseband signal input by the baseband signal processing unit 208 is subjected to frequency conversion processing to be converted into a radio frequency signal.
- the baseband signal processing unit 208 is configured to perform reception processing on the baseband signal input from the transmission / reception unit 206. In addition, the baseband signal processing unit 208 performs transmission processing on user data received from a higher-level station via the transmission path interface 212, “Measurement Configuration” received from the measurement control unit 2102 in the call processing unit 210, and the like. Configured to do.
- the “Measurement Configuration” may be, for example, an RRC message, and more specifically, may be an RRC message of “RRC Connection Reconfiguration”.
- the call processing unit 210 instructs the user apparatus 100n in the RRC_Connected state to measure and report the communication quality in a cell belonging to two or more layers, and includes a “Measurement Configuration (first Control signal) ".
- the call processing unit 210 allows the user apparatus 100n to perform a handover process based on the communication quality (“Measurement Report”) in a cell belonging to two or more layers measured by the user apparatus 100n based on the first priority. It is configured to determine whether or not to perform.
- the call processing unit 210 is used to determine a cell to wait for by measuring the communication quality in cells belonging to two or more layers for the user device 100n in the idle state, and setting the second priority. It is comprised so that the 2nd control signal containing may be transmitted.
- step S101 the user apparatus 100n receives “Measurement Configuration (first control signal)” notified from the base station apparatus 200.
- step S102 the user apparatus 100n prioritizes the first cell (the first layer cell and the second layer cell in the example of FIG. 11) to be measured that is set to “Measurement Configuration”. Get priority).
- the priority may be set in “Measurement objects” of “Measurement Configuration”, or may be set in other parameters.
- step S103 the priority given to the cell of the first layer is compared with the priority given to the cell of the second layer.
- step S104 the priority given to the cell of the 1st layer is higher than the priority given to the cell of the 2nd layer.
- user equipment 100n measures the cell of the 1st layer in Step S104.
- step S105 the second layer cell is measured.
- the user apparatus 100n determines that the cell of the second layer is in step S106. In step S107, the first layer cell is measured.
- step S201 the user apparatus 100n receives “Measurement Configuration (first control signal)” notified from the base station apparatus 200.
- step S202 the user apparatus 100n prioritizes the first cell (first layer cell and second layer cell in the example of FIG. 12) to be measured that is set to “Measurement Configuration”. Get priority).
- step S204 the user apparatus 100n discards the first priority.
- step S301 the base station apparatus 200 gives priority to each layer (each cell) to be measured by the user apparatus 100n.
- step S302 the base station apparatus 200 transmits “Measurement Configuration (first control signal)” including priority to each layer (each cell) to the user apparatus 100n.
- step S303 the base station apparatus 200 receives “Measurement Report” for each measurement target layer (each cell) from the user apparatus 100n.
- step S304 the base station apparatus 200 instructs the user apparatus 100n to perform a handover based on the received “Measurement Report”.
- the user apparatus 100n performs mobility management based on different priorities in the RRC_Connected state and the Idle state. It becomes possible.
- the operations of the user apparatus 100 and the base station apparatus 200 described above may be implemented by hardware, may be implemented by a software module executed by a processor, or may be implemented by a combination of both. .
- the software modules include RAM (Random Access Memory), flash memory, ROM (Read Only Memory), EPROM (Erasable Programmable ROM), EEPROM (Electronically Erasable and Programmable, Removable ROM, Hard Disk, and Removable ROM).
- RAM Random Access Memory
- flash memory ROM (Read Only Memory)
- EPROM Erasable Programmable ROM
- EEPROM Electrically Erasable and Programmable, Removable ROM, Hard Disk, and Removable ROM.
- it may be provided in a storage medium of an arbitrary format such as a CD-ROM.
- Such a storage medium is connected to the processor so that the processor can read and write information from and to the storage medium. Further, such a storage medium may be integrated in the processor. Further, such a storage medium and a processor may be provided in the ASIC. Such an ASIC may be provided in the user apparatus 100 or the base station apparatus 200. Further, the storage medium and the processor may be provided in the user apparatus 100 or the base station apparatus 200 as a discrete component.
- the user equipment in the RRC_Connected state is notified of the priorities for each layer, thereby realizing the different frequency measurement of a plurality of layers based on the priorities.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Databases & Information Systems (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Description
その後、上述の式を満足した場合に、ユーザ装置は、その旨(イベントA3)を、基地局装置(ネットワーク)に報告する。
図4乃至図10を参照して、本発明の第1の実施形態に係る移動通信システムの構成について説明する。なお、本実施形態に係る移動通信システムを説明するための全図において、同一機能を有するものに対しては、同一符号を付与して繰り返しの説明を省略する。
図11乃至図13を参照して、本発明の第1の実施形態に係る移動通信システムの動作について説明する。
本発明の第1の実施形態に係る移動通信システムによれば、RRC_Connected状態のユーザ装置に対して、レイヤごとの優先度を通知することにより、かかる優先度に基づく複数のレイヤの異周波数測定を実現し、迅速でかつ高品質の異周波数ハンドオーバ及び異RATハンドオーバを実現することができる。
Claims (10)
- 基地局装置との間で通信を行うように構成されているユーザ装置であって、
前記基地局装置との間で無線リンクを確立している接続状態において、該基地局装置から通知された第1制御信号によって通知される第1優先度に基づいて、2つ以上のレイヤに属するセルにおける通信品質を測定し、該測定結果を該基地局装置に対して報告し、該基地局装置からの指示に応じてハンドオーバ処理を行うように構成されている接続状態処理部と、
待ち受け状態において、前記基地局装置から通知された第2制御信号によって通知される第2優先度に基づいて、2つ以上のレイヤに属するセルにおける通信品質を測定し、該測定結果に基づいて待ち受けを行うセルを決定するように構成されている待ち受け状態処理部とを具備することを特徴とするユーザ装置。 - 前記接続状態処理部及び前記待ち受け状態処理部は、前記2つ以上のレイヤに属するセルにおける通信品質として、周波数の異なる同一システム内のセル或いは異なるシステム内のセルにおける通信品質を測定するように構成されていることを特徴とする請求項1に記載のユーザ装置。
- 前記接続状態処理部及び前記待ち受け状態処理部は、より高い優先度を有するセルにおける通信品質の測定を、より低い優先度を有するセルにおける通信品質の測定よりも先に行うように構成されていることを特徴とする請求項1に記載のユーザ装置。
- 前記接続状態は、RRC_Connected状態であり、前記待ち受け状態は、Idle状態であることを特徴とする請求項1に記載のユーザ装置。
- 前記第1優先度は、前記ユーザ装置がRRC_Connected状態からIdle状態に遷移する際に廃棄され、
前記第2優先度は、前記ユーザ装置がIdle状態からRRC_Connected状態に遷移する際に廃棄されることを特徴とする請求項4に記載のユーザ装置。 - ユーザ装置との間で通信を行うように構成されている基地局装置であって、
前記基地局装置との間で無線リンクを確立している接続状態の前記ユーザ装置に対して、2つ以上のレイヤに属するセルにおける通信品質を測定して報告するように指示し、第1優先度を含む第1制御信号を送信し、該ユーザ装置によって該第1優先度に基づいて測定された2つ以上のレイヤに属するセルにおける通信品質に基づいて、該ユーザ装置がハンドオーバ処理を行うべきか否かについて判定するように構成されているハンドオーバ処理部と、
待ち受け状態の前記ユーザ装置に対して、2つ以上のレイヤに属するセルにおける通信品質を測定して待ち受けを行うセルを決定するために用いられ、第2優先度を含む第2制御信号を送信するように構成されている待ち受けセル検索処理部とを具備することを特徴とする基地局装置。 - 前記2つ以上のレイヤに属するセルにおける通信品質として、周波数の異なる同一システム内のセル或いは異なるシステム内のセルにおける通信品質が測定されることを特徴とする請求項6に記載の基地局装置。
- 前記接続状態は、RRC_Connected状態であり、前記待ち受け状態は、Idle状態であることを特徴とする請求項6に記載の基地局装置。
- 前記第1優先度は、前記ユーザ装置がRRC_Connected状態からIdle状態に遷移する際に廃棄され、
前記第2優先度は、前記ユーザ装置がIdle状態からRRC_Connected状態に遷移する際に廃棄されることを特徴とする請求項8に記載の基地局装置。 - ユーザ装置と基地局装置との間で通信を行う移動通信方法であって、
前記基地局装置が、該基地局装置との間で無線リンクを確立している接続状態のユーザ装置に対して、2つ以上のレイヤに属するセルにおける通信品質を測定して報告するように指示する第1制御信号を送信する工程と、
接続状態のユーザ装置が、前記基地局装置から通知された前記第1制御信号によって通知される第1優先度に基づいて、前記2つ以上のレイヤに属するセルにおける通信品質を測定し、該測定結果を該基地局装置に対して報告する工程と、
前記基地局装置が、前記ユーザ装置によって通知された前記2つ以上のレイヤに属するセルにおける通信品質に基づいて、該ユーザ装置がハンドオーバ処理を行うべきか否かについて判定する工程と、
前記基地局装置が、待ち受け状態のユーザ装置に対して、第2制御信号を送信する工程と、
待ち受け状態の前記ユーザ装置が、前記基地局装置から通知された第2制御信号によって通知される第2優先度に基づいて、2つ以上のレイヤに属するセルにおける通信品質を測定し、該測定結果に基づいて待ち受けを行うセルを決定する工程とを有することを特徴とする移動通信方法。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP09723589.9A EP2262318B1 (en) | 2008-03-21 | 2009-03-19 | User equipment, base station device, and mobile communication method |
US12/933,831 US8855646B2 (en) | 2008-03-21 | 2009-03-19 | User equipment, base station device, and mobile communication method |
CN200980110422.1A CN101978737B (zh) | 2008-03-21 | 2009-03-19 | 用户装置、基站装置以及移动通信方法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008074615A JP5205093B2 (ja) | 2008-03-21 | 2008-03-21 | ユーザ装置及び基地局装置 |
JP2008-074615 | 2008-03-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2009116643A1 true WO2009116643A1 (ja) | 2009-09-24 |
Family
ID=41091041
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2009/055501 WO2009116643A1 (ja) | 2008-03-21 | 2009-03-19 | ユーザ装置、基地局装置及び移動通信方法 |
Country Status (6)
Country | Link |
---|---|
US (1) | US8855646B2 (ja) |
EP (1) | EP2262318B1 (ja) |
JP (1) | JP5205093B2 (ja) |
KR (1) | KR20100138968A (ja) |
CN (1) | CN101978737B (ja) |
WO (1) | WO2009116643A1 (ja) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102104926A (zh) * | 2009-12-18 | 2011-06-22 | 华为技术有限公司 | 一种切换触发方法和装置 |
CN101778438B (zh) * | 2010-01-25 | 2012-09-05 | 华为技术有限公司 | 协作通信方法和设备、切换方法及基站控制设备 |
US20120231782A1 (en) * | 2010-10-08 | 2012-09-13 | Telefonaktiebolaget Lm Ericsson | Methods and devices for inter frequency measurements |
CN102958115A (zh) * | 2011-08-30 | 2013-03-06 | 中兴通讯股份有限公司 | 信号处理方法及装置 |
JP2013534746A (ja) * | 2010-06-09 | 2013-09-05 | 富士通株式会社 | 無線セルラネットワークにおける計画的セル停止のためのハンドオーバ手順及びシグナリング |
JP2014535234A (ja) * | 2011-11-07 | 2014-12-25 | アルカテル−ルーセント | アンテナ・システムおよびアンテナ・システムの受信電力をレポートするための方法 |
EP2509361A4 (en) * | 2009-11-30 | 2016-11-23 | Ntt Docomo Inc | MOBILE COMMUNICATION TERMINAL, MOBILE COMMUNICATION SYSTEM AND MOBILE COMMUNICATION METHOD |
CN107006056A (zh) * | 2014-12-05 | 2017-08-01 | 诺基亚技术有限公司 | 用于具有突发性交互式业务的用户设备的延迟减少 |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009154550A1 (en) * | 2008-06-18 | 2009-12-23 | Telefonaktiebolaget L M Ericsson (Publ) | Receiving radio access technology..priority settings depending on the operation mode of a terminal |
US8605616B2 (en) * | 2008-12-26 | 2013-12-10 | Sharp Kabushiki Kaisha | Mobile station apparatus, base station apparatus, management method in a mobile station apparatus, processing section and communication system |
JP5647453B2 (ja) * | 2010-07-20 | 2014-12-24 | 京セラ株式会社 | 無線通信システム、無線中継局、無線端末、及び通信制御方法 |
JP5247794B2 (ja) * | 2010-12-24 | 2013-07-24 | 株式会社エヌ・ティ・ティ・ドコモ | 移動通信システムにおける基地局及び情報取得方法 |
US8670330B2 (en) * | 2011-01-26 | 2014-03-11 | Qualcomm Incorporated | Methods and apparatus to perform reference signal measurements in a TDD-LTE system from a TD-SCDMA system |
CN102624466B (zh) * | 2011-01-26 | 2015-04-29 | 高通股份有限公司 | 从td-scdma系统执行tdd-lte系统中的参考信号测量的方法和装置 |
US9198069B2 (en) * | 2011-02-09 | 2015-11-24 | Broadcom Corporation | Priority measurement rules for channel measurement occasions |
JP5732936B2 (ja) | 2011-03-15 | 2015-06-10 | 富士通株式会社 | 送信局、受信局、通信システムおよびギャップ割当方法 |
JP5470590B2 (ja) * | 2011-04-14 | 2014-04-16 | 株式会社日立製作所 | 通信装置及びハンドオーバの制御方法 |
JP5798850B2 (ja) * | 2011-09-16 | 2015-10-21 | 株式会社Nttドコモ | ユーザ端末、及び通信方法 |
JP6001865B2 (ja) | 2012-01-30 | 2016-10-05 | 株式会社Nttドコモ | 移動通信方法及び移動局 |
CN104350787B (zh) * | 2012-05-29 | 2018-12-18 | 富士通株式会社 | 无线通信系统、无线站以及基站 |
CN103686987A (zh) * | 2012-09-26 | 2014-03-26 | 北京三星通信技术研究有限公司 | 发送和接收同步信道、广播信道的方法和设备 |
JPWO2014122981A1 (ja) * | 2013-02-07 | 2017-01-26 | 日本電気株式会社 | メッセージ送信装置、メッセージ送信方法及びメッセージ送信プログラム |
TWI555413B (zh) * | 2013-07-01 | 2016-10-21 | 創新音速股份有限公司 | 在無線通訊系統中處理一測量配置的方法及裝置 |
US20150327104A1 (en) * | 2014-05-08 | 2015-11-12 | Candy Yiu | Systems, methods, and devices for configuring measurement gaps for dual connectivity |
US10849026B2 (en) * | 2016-05-13 | 2020-11-24 | Qualcomm Incorporated | Method and apparatus of uplink and downlink based handover |
US10952088B2 (en) | 2017-03-13 | 2021-03-16 | Lg Electronics Inc. | Method and network device for receiving report, and method and base station for performing report |
EP3965464A1 (en) * | 2019-05-02 | 2022-03-09 | Ntt Docomo, Inc. | User equipment and communication method |
US11632685B2 (en) * | 2019-06-17 | 2023-04-18 | FG Innovation Company Limited | Method and apparatus for handling measurement in wireless communication system |
CN115051902A (zh) * | 2022-08-12 | 2022-09-13 | 华南师范大学 | 一种窄带物联网芯片编码与解码电路 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001054158A (ja) * | 1999-08-16 | 2001-02-23 | Ntt Docomo Inc | 周辺基地局情報更新方法、移動通信システム、移動局および基地局 |
JP2005051568A (ja) * | 2003-07-30 | 2005-02-24 | Nec Corp | 移動通信システム、移動局及びそれに用いる周辺セル検出監視方法 |
JP2006197536A (ja) * | 2004-12-15 | 2006-07-27 | Matsushita Electric Ind Co Ltd | 無線網制御装置、無線lan中継装置、無線通信システム及び無線通信システムの通信方法 |
JP2008074615A (ja) | 2006-09-20 | 2008-04-03 | Satoru Aikawa | 給紙装置及び丁合機 |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004112419A1 (ja) * | 2003-06-12 | 2004-12-23 | Fujitsu Limited | 基地局装置および移動通信システム |
JP4138769B2 (ja) * | 2005-03-17 | 2008-08-27 | 株式会社東芝 | 無線通信端末、無線通信方法、及び無線通信システム |
CN101371475B (zh) | 2006-01-11 | 2013-02-13 | 松下电器产业株式会社 | 无线通信基站装置和广播信道信号的发送频带设定方法 |
GB0615695D0 (en) * | 2006-08-08 | 2006-09-13 | Lucent Technologies Inc | Call continuity |
JP4974616B2 (ja) * | 2006-08-31 | 2012-07-11 | 京セラ株式会社 | 通信方法ならびにそれを利用した端末装置 |
US8615276B2 (en) * | 2006-08-31 | 2013-12-24 | Kyocera Corporation | Method for controlling standby operations compatible with a plurality of wireless communication systems and method for performing operations compatible with a plurality of wireless communication systems |
EP2090127A2 (en) * | 2006-10-30 | 2009-08-19 | Nokia Corporation | Method, apparatus and system providing operator controlled mobility for user equipment |
EP2119254B1 (en) * | 2007-02-12 | 2013-07-03 | Motorola Mobility LLC | Apparatus and method providing priority setting for multi-rat interworking |
US20090047958A1 (en) * | 2007-08-16 | 2009-02-19 | Anna Pucar Rimhagen | Neighbor List Management for User Terminal |
KR101479340B1 (ko) * | 2007-09-18 | 2015-01-06 | 엘지전자 주식회사 | 무선통신 시스템에서 셀 재선택 과정을 수행하는 방법 |
US8280377B2 (en) * | 2007-10-05 | 2012-10-02 | Lg Electronics Inc. | Method of performing cell reselection in wireless communication system |
EP2077690B1 (en) * | 2008-01-07 | 2015-03-18 | LG Electronics Inc. | Method of reselecting a cell based on priorities |
WO2010109764A1 (ja) * | 2009-03-27 | 2010-09-30 | パナソニック株式会社 | 基地局および無線通信システム |
JP5732936B2 (ja) * | 2011-03-15 | 2015-06-10 | 富士通株式会社 | 送信局、受信局、通信システムおよびギャップ割当方法 |
-
2008
- 2008-03-21 JP JP2008074615A patent/JP5205093B2/ja active Active
-
2009
- 2009-03-19 KR KR1020107021489A patent/KR20100138968A/ko not_active Application Discontinuation
- 2009-03-19 CN CN200980110422.1A patent/CN101978737B/zh active Active
- 2009-03-19 EP EP09723589.9A patent/EP2262318B1/en active Active
- 2009-03-19 WO PCT/JP2009/055501 patent/WO2009116643A1/ja active Application Filing
- 2009-03-19 US US12/933,831 patent/US8855646B2/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001054158A (ja) * | 1999-08-16 | 2001-02-23 | Ntt Docomo Inc | 周辺基地局情報更新方法、移動通信システム、移動局および基地局 |
JP2005051568A (ja) * | 2003-07-30 | 2005-02-24 | Nec Corp | 移動通信システム、移動局及びそれに用いる周辺セル検出監視方法 |
JP2006197536A (ja) * | 2004-12-15 | 2006-07-27 | Matsushita Electric Ind Co Ltd | 無線網制御装置、無線lan中継装置、無線通信システム及び無線通信システムの通信方法 |
JP2008074615A (ja) | 2006-09-20 | 2008-04-03 | Satoru Aikawa | 給紙装置及び丁合機 |
Non-Patent Citations (1)
Title |
---|
See also references of EP2262318A4 |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2509361A4 (en) * | 2009-11-30 | 2016-11-23 | Ntt Docomo Inc | MOBILE COMMUNICATION TERMINAL, MOBILE COMMUNICATION SYSTEM AND MOBILE COMMUNICATION METHOD |
CN102104926A (zh) * | 2009-12-18 | 2011-06-22 | 华为技术有限公司 | 一种切换触发方法和装置 |
CN102104926B (zh) * | 2009-12-18 | 2014-05-07 | 华为技术有限公司 | 一种切换触发方法和装置 |
CN101778438B (zh) * | 2010-01-25 | 2012-09-05 | 华为技术有限公司 | 协作通信方法和设备、切换方法及基站控制设备 |
JP2013534746A (ja) * | 2010-06-09 | 2013-09-05 | 富士通株式会社 | 無線セルラネットワークにおける計画的セル停止のためのハンドオーバ手順及びシグナリング |
US8805385B2 (en) | 2010-06-09 | 2014-08-12 | Fujitsu Limited | Handover procedures and signalling for planned cell outage in wireless cellular networks |
US20120231782A1 (en) * | 2010-10-08 | 2012-09-13 | Telefonaktiebolaget Lm Ericsson | Methods and devices for inter frequency measurements |
US8903396B2 (en) * | 2010-10-08 | 2014-12-02 | Telefonaktiebolaget Lm Ericsson (Publ) | Methods and devices for inter frequency measurements |
CN102958115A (zh) * | 2011-08-30 | 2013-03-06 | 中兴通讯股份有限公司 | 信号处理方法及装置 |
JP2014535234A (ja) * | 2011-11-07 | 2014-12-25 | アルカテル−ルーセント | アンテナ・システムおよびアンテナ・システムの受信電力をレポートするための方法 |
US9510293B2 (en) | 2011-11-07 | 2016-11-29 | Alcatel Lucent | Antenna system and method for reporting receiving power of the same |
CN107006056A (zh) * | 2014-12-05 | 2017-08-01 | 诺基亚技术有限公司 | 用于具有突发性交互式业务的用户设备的延迟减少 |
Also Published As
Publication number | Publication date |
---|---|
JP2009232124A (ja) | 2009-10-08 |
CN101978737A (zh) | 2011-02-16 |
KR20100138968A (ko) | 2010-12-31 |
EP2262318A1 (en) | 2010-12-15 |
EP2262318A4 (en) | 2016-04-13 |
JP5205093B2 (ja) | 2013-06-05 |
US8855646B2 (en) | 2014-10-07 |
US20110151876A1 (en) | 2011-06-23 |
EP2262318B1 (en) | 2017-07-19 |
CN101978737B (zh) | 2013-08-21 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5205093B2 (ja) | ユーザ装置及び基地局装置 | |
US10455468B2 (en) | Mobility enhancements for high speed scenarios | |
JP5629839B2 (ja) | 端末装置および通信方法 | |
US9113369B2 (en) | Method for coordinating inter-cell interference and base station | |
US9742647B2 (en) | Reporting serving cell packet loss rate | |
JP6490813B2 (ja) | 高利得ユーザ機器のための無線アクセス技術間ハンドオーバを管理するための技法 | |
KR101042829B1 (ko) | 개인 네트워크 셀을 가지는 무선 통신 시스템에서 무선링크 연결 장치 및 방법 | |
AU2011259445B2 (en) | Mobile station, radio base station and communication control method | |
WO2011004748A1 (ja) | 通信システム、移動局装置および基地局装置 | |
KR20100050536A (ko) | 무선 통신 시스템에서의 셀 재선택 | |
KR20140090662A (ko) | 플렉서블 대역폭 캐리어들에 대한 세트 관리 | |
KR20140005321A (ko) | 모바일 통신 디바이스 및 시스템 | |
JP2015122772A (ja) | Mdt測定値の非リアルタイムの報告を可能にする方法 | |
US9485717B2 (en) | Measurement request and response for reception quality based notified cell identification | |
KR102659723B1 (ko) | 이동 통신 시스템에서 통신을 수행하는 방법 및 장치 | |
CN108293202B (zh) | 在无线通信系统中发送和接收测量报告的方法和设备 | |
JP6593859B2 (ja) | 無線通信システム、無線端末、無線局、および通信制御方法 | |
KR20110122454A (ko) | 이동통신시스템에서 복수 개의 캐리어들이 집적된 단말기의 캐리어들에 대한 효율적인 메저먼트 방법 | |
EP2704488A1 (en) | Method and apparatus for prioritizing small cells in a wireless communication system | |
US10178567B2 (en) | Method for performing measurement and wireless equipment thereof | |
JPWO2009072521A1 (ja) | 移動通信システム、基地局装置、ユーザ装置及び方法 | |
US20190268814A1 (en) | Network Node and Methods Therein for User Plane Switching | |
CN106416363B (zh) | 用于在多小区无线通信网络中调整小区更改时间的方法 | |
KR20140106368A (ko) | 이종망에서 핸드오버 방법 및 장치 | |
CN107295593B (zh) | 载波聚合中小区切换方法和装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 200980110422.1 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 09723589 Country of ref document: EP Kind code of ref document: A1 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
ENP | Entry into the national phase |
Ref document number: 20107021489 Country of ref document: KR Kind code of ref document: A |
|
REEP | Request for entry into the european phase |
Ref document number: 2009723589 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2009723589 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 12933831 Country of ref document: US |