WO2006075630A1 - 無線リソース管理方法、無線基地局及び無線回線制御局 - Google Patents
無線リソース管理方法、無線基地局及び無線回線制御局 Download PDFInfo
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- WO2006075630A1 WO2006075630A1 PCT/JP2006/300229 JP2006300229W WO2006075630A1 WO 2006075630 A1 WO2006075630 A1 WO 2006075630A1 JP 2006300229 W JP2006300229 W JP 2006300229W WO 2006075630 A1 WO2006075630 A1 WO 2006075630A1
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- transmission rate
- maximum allowable
- allowable transmission
- base station
- radio
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- 238000007726 management method Methods 0.000 title claims description 39
- 230000005540 biological transmission Effects 0.000 claims abstract description 264
- 238000000034 method Methods 0.000 claims abstract description 46
- 238000010295 mobile communication Methods 0.000 claims description 41
- 230000008569 process Effects 0.000 claims description 26
- 238000004891 communication Methods 0.000 claims description 21
- 230000004044 response Effects 0.000 claims description 9
- 238000012545 processing Methods 0.000 description 164
- 238000010586 diagram Methods 0.000 description 14
- 230000008859 change Effects 0.000 description 10
- 238000002360 preparation method Methods 0.000 description 7
- 238000012546 transfer Methods 0.000 description 7
- 238000005259 measurement Methods 0.000 description 5
- 101100465000 Mus musculus Prag1 gene Proteins 0.000 description 4
- 238000012790 confirmation Methods 0.000 description 3
- 238000012937 correction Methods 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 230000007480 spreading Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000013139 quantization Methods 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
- H04W28/18—Negotiating wireless communication parameters
- H04W28/22—Negotiating communication rate
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W92/00—Interfaces specially adapted for wireless communication networks
- H04W92/04—Interfaces between hierarchically different network devices
- H04W92/12—Interfaces between hierarchically different network devices between access points and access point controllers
Definitions
- Radio resource management method radio base station, and radio network controller
- the present invention relates to a radio resource management method, a radio base station, and a radio network controller for managing radio resources for transmitting user data via an uplink by a mobile station.
- the radio resources of the radio base station NodeB In consideration of transmission power, mobile station UE transmission processing performance, transmission speed required by higher-level applications, etc., determine the transmission speed of the dedicated channel, and move according to the Layer 3 (Radio Resource Control Layer) message. It is configured to notify the determined transmission rate of the dedicated channel to each of the station UE and the radio base station NodeB.
- Layer 3 Radio Resource Control Layer
- the radio network controller RNC is an apparatus that exists above the radio base station NodeB and controls the radio base station NodeB and the mobile station UE.
- the radio network controller RNC normally controls a large number of radio base stations NodeB, as shown in FIG.
- a high-speed channel for example, about 1 to: LOOms
- radio resource control methods that have been studied in "uplink genno, sentence" can be broadly classified into three as follows. The following outlines a powerful radio resource control method.
- the radio base station NodeB power determines the mobile station UE that permits transmission of user data and the transmission rate of the user data for each predetermined timing, and together with the mobile station ID, Broadcasts information on the transmission rate (or the maximum allowable transmission rate of user data).
- the mobile station UE designated by the radio base station NodeB transmits user data at the designated timing and transmission rate (or within the range of the maximum allowable transmission rate).
- each mobile station UE power radio base station NodeB
- the maximum allowable transmission rate of the user data is determined by the radio base station NodeB for each transmission frame or for each of the plurality of transmission frames, and is determined for each mobile station UE. Use the one notified to.
- the radio base station NodeB when notifying the maximum allowable transmission rate, the radio base station NodeB itself or the relative value of the maximum allowable transmission rate (for example, the Up command / Notify 2 values of Down command).
- the transmission rate of user data common to the mobile base station UE that is communicating with the radio base station NodeB or the information necessary for calculating the transmission rate is broadcasted.
- the mobile station determines the transmission rate of user data based on the received information.
- Time & Rate Control and “: Rate Control per UE” are ideally the power control stations that can be the best control method to improve the radio capacity in the uplink. Since it is necessary to assign the transmission rate of user data after grasping the amount of data being transmitted and the transmission power in the mobile station UE, there is a problem that the control load of the radio base station NodeB increases.
- radio resource control methods have a problem that the overhead due to the exchange of control signals becomes large.
- Radio Base Station NodeB broadcasts information common to the radio base station NodeB power cell, and each mobile station UE autonomously obtains the transmission rate of user data based on the received information. Therefore, there is an advantage that the control load by the radio base station NodeB is small.
- the radio base station NodeB needs to be configured so that any mobile station UE can receive user data in the uplink, it can effectively use the radio capacity in the uplink. In order to do so, there was a problem that the equipment scale of the radio base station NodeB increased.
- Non-Patent Document 1 the mobile station UE receives the initial transmission notified in advance.
- a method Autonomous ramping method
- the radio base station determines the maximum allowable transmission rate based on hardware resources and radio resources (for example, the amount of interference in the uplink) in each cell, and in the mobile station that is performing communication. Controls the transmission rate of user data.
- hardware resources and radio resources for example, the amount of interference in the uplink
- the radio base station may be configured to notify the maximum allowable transmission rate to a mobile station connected to a subordinate cell.
- the radio base station sets the maximum allowable transmission rate to a low value when the transmission rate of user data in the mobile station connected to the subordinate cell becomes high and hardware resources are insufficient. However, do not run out of hardware resources.
- the radio base station regains the maximum allowable transmission rate when there is a surplus in hardware resources, such as when user data transmission in a mobile station connected to a subordinate cell is completed. Set high.
- the radio base station is configured to notify the mobile station connected to the subordinate cell of the maximum allowable transmission rate.
- the radio base station increases the transmission rate of user data in the mobile station connected to the subordinate cell, and the measurement interference amount (eg, noise rise) in the uplink is an allowable value (for example, the maximum allowable value). If the noise rise is exceeded, the maximum allowable transmission rate is set low so that the amount of uplink interference falls within the allowable value (see Fig. 3).
- the measurement interference amount eg, noise rise
- the maximum allowable transmission rate is set low so that the amount of uplink interference falls within the allowable value (see Fig. 3).
- the radio base station when the user data transmission in the mobile station connected to the subordinate cell is completed, the uplink interference amount (for example, noise rise) is an allowable value (for example, the maximum If it is within the allowable noise rise and there is a margin, set the maximum allowable transmission rate to a higher value again (see Figure 3).
- the uplink interference amount for example, noise rise
- an allowable value for example, the maximum If it is within the allowable noise rise and there is a margin, set the maximum allowable transmission rate to a higher value again (see Figure 3).
- a radio network controller performs call admission control processing or The power configured to perform unrelated resource management such as handover processing.
- Uplink enhancement always controls the amount of interference in the uplink so that it approaches the permissible value, so it is based on the amount of interference in the uplink.
- radio resource management such as call admission control processing in uplink and node over processing cannot be performed.
- a call admission control process in the uplink is performed for each cell based on the received power of the uplink enhancement channel from the mobile station having the cell as a serving cell.
- a radio resource management method for performing radio resource management such as a handover process is known.
- the conventional radio resource management method does not directly reflect the radio communication quality (eg, the transmission rate of uplink user data) of the mobile station under each cell. There was a problem that management could not be performed accurately.
- Non-Patent Document 1 3GPP TSG-RAN R1- 040773
- An object is to provide a resource management method, a radio base station, and a radio network controller.
- a first feature of the present invention is a radio resource management method for managing radio resources for transmitting user data via an uplink by a mobile station, wherein the radio base station performs radio channel control. Reporting a maximum allowable transmission rate of the user data broadcasted to a mobile station connected to the radio base station at a predetermined timing to the station, and the radio network controller And a step of managing the radio resource based on the maximum allowable transmission rate.
- the radio network controller has a step of requesting the radio base station to report the maximum allowable transmission rate, wherein the radio base station includes: In response to the request, the maximum allowable transmission rate may be reported to the radio network controller.
- the radio base station has a maximum allowable transmission rate.
- the maximum allowable transmission rate may be reported to the radio network controller when it exceeds or falls below a certain threshold.
- the radio base station may report the maximum allowable transmission rate to the radio network controller at a predetermined period.
- the radio circuit control station in the step of managing the radio resource, makes a communication start request from the mobile station based on the reported maximum allowable transmission rate. You can decide whether to accept or not.
- a second feature of the present invention is that the mobile station automatically increases the transmission rate of user data transmitted via the uplink up to the maximum allowable transmission rate, and is used in a mobile communication system.
- a maximum allowable transmission rate notification unit configured to notify the mobile station connected to the wireless base station of the maximum allowable transmission rate; and a wireless line
- a maximum permissible transmission rate report unit configured to report the maximum permissible transmission rate reported to the mobile station connected to the radio base station to the control station at a predetermined timing; It is a summary to comprise.
- the radio network control station when the maximum allowable transmission rate report unit is requested by the radio network control station to report the maximum allowable transmission rate, the radio network control station And may be configured to report the maximum allowable transmission rate.
- the maximum permissible transmission rate report unit for the radio network controller when the maximum permissible transmission rate exceeds or falls below a predetermined threshold. It may be configured to report allowable transmission rates.
- the maximum allowable transmission rate report unit is configured to report the maximum allowable transmission rate to the radio network controller in a predetermined cycle. Also good.
- a third feature of the present invention is that the mobile station automatically increases the transmission rate of user data transmitted via the uplink up to the maximum allowable transmission rate, and is used in a mobile communication system.
- the maximum allowable transmission rate of user data in the uplink which is connected to a specific radio base station and broadcasts to the mobile station, is acquired from the specific radio base station. Configured to obtain the maximum allowable transmission rate acquisition unit, and And a radio resource management unit configured to manage radio resources for transmitting the user data based on the maximum allowable transmission rate.
- the maximum allowable transmission rate acquisition unit requests the radio base station to report the maximum allowable transmission rate, thereby obtaining the maximum allowable transmission rate. May be configured to get ⁇ .
- the maximum allowable transmission rate acquisition unit reports the radio base station when the maximum allowable transmission rate exceeds or falls below a predetermined threshold. Configured to get the maximum allowable transmission rate!
- the maximum allowable transmission rate acquisition unit may be configured to acquire the maximum allowable transmission rate reported in a predetermined cycle by the radio base station.
- a fourth feature of the present invention is that a radio base station used in a mobile communication system in which a mobile station determines a transmission rate of user data transmitted via an uplink based on a maximum allowable transmission rate.
- a maximum allowable transmission rate notification unit configured to notify the mobile station connected to the radio base station of the maximum allowable transmission rate, and a radio network controller. And reporting to the mobile station connected to the radio base station at a predetermined timing and reporting the maximum permissible transmission rate. The gist is to provide.
- the radio network control station when the maximum allowable transmission rate report unit is requested by the radio network control station to report the maximum allowable transmission rate, the radio network control station And may be configured to report the maximum allowable transmission rate.
- the maximum permissible transmission rate report unit for the radio network controller when the maximum permissible transmission rate exceeds or falls below a predetermined threshold. It may be configured to report allowable transmission rates.
- the maximum allowable transmission rate reporting unit is configured to report the maximum allowable transmission rate to the radio network controller in a predetermined cycle. Also good.
- a fifth feature of the present invention is that radio link control used in a mobile communication system in which a mobile station determines a transmission rate of user data transmitted via an uplink based on a maximum allowable transmission rate. A maximum allowable transmission rate of user data in an uplink broadcast to the mobile station connected to a specific radio base station from the specific radio base station And a radio resource configured to manage a radio resource for transmitting the user data based on the acquired maximum permissible transmission rate. The main point is to have a management department.
- the maximum allowable transmission rate acquisition unit requests the radio base station to report the maximum allowable transmission rate, thereby determining the maximum allowable transmission rate. May be configured to get ⁇ .
- the maximum allowable transmission rate acquisition unit acquires the maximum allowable transmission rate reported from the radio base station when the value exceeds or falls below a predetermined threshold. It may be configured as ⁇ .
- the maximum allowable transmission rate acquisition unit may be configured to acquire the maximum allowable transmission rate reported in a predetermined cycle by the radio base station. Good.
- the radio resource management unit determines whether or not to accept a communication start request from the mobile station based on the reported maximum allowable transmission rate. It's configured as you like.
- FIG. 1 is an overall configuration diagram of a general mobile communication system.
- FIGS. 2 (a) to 2 (c) are diagrams for explaining an operation when transmitting burst data in a conventional mobile communication system.
- FIG. 3 is a diagram for explaining an operation when controlling a transmission rate in an uplink in a conventional mobile communication system.
- FIG. 4 is a functional block diagram of a mobile station in the mobile communication system according to the embodiment of the present invention.
- FIG. 5 is a functional block diagram of a baseband signal processing unit in the mobile station of the mobile communication system according to the embodiment of the present invention.
- FIG. 6 is a functional block diagram of a MAC-e processing unit of a baseband signal processing unit in a mobile station of a mobile communication system according to an embodiment of the present invention.
- FIG. 7 is a functional block diagram of a radio base station of the mobile communication system according to one embodiment of the present invention.
- FIG. 8 is a functional block diagram of a baseband signal processing unit in a radio base station of a mobile communication system according to an embodiment of the present invention.
- FIG. 9 is a functional block diagram of a MAC-e and layer 1 processing unit (uplink configuration) in a baseband signal processing unit of a radio base station of a mobile communication system according to an embodiment of the present invention. is there.
- FIG. 10 is a diagram of MAC-e in the baseband signal processing unit of the radio base station of the mobile communication system according to the embodiment of the present invention and the MA Ce function unit of the layer 1 processing unit (uplink configuration). It is a functional block diagram.
- FIG. 11 is a functional block diagram of a radio network controller of the mobile communication system according to one embodiment of the present invention.
- FIG. 12 is a sequence diagram showing an operation of the mobile communication system according to the embodiment of the present invention.
- FIG. 13 is a sequence diagram showing an operation of the mobile communication system according to one embodiment of the present invention.
- the mobile communication system according to the present embodiment includes a plurality of radio base stations NodeB # 1 to # 5 and a radio network controller RNC.
- the mobile communication system according to the present embodiment may be configured to control the transmission rate of user data transmitted via the uplink by the mobile station UE.
- “HSDPA” is used in the downlink
- “EUL (uplink enhancement)” is used in the uplink.
- HARQ N process stop undo
- the enhanced dedicated physical data channel (E-DPDC H: Enhanced Dedicated Physical Data Channel) and the enhanced dedicated physical control channel (E-DPCCH: Enhanced Dedicated Physical Control Channel) are configured.
- Dedicated physical channel (E-DPCH: Enhanced Dedicated Physical Channel) and dedicated physical data channel (DPDCH: Dedicated Physical Data Channel) and dedicated physical control channel (DPCCH: Dedicated Physical Control Channel)
- DPDCH Dedicated Physical Data Channel
- DPCCH Dedicated Physical Control Channel
- DPCH Dedicat ed Physical Channel
- the enhanced dedicated physical control channel is a transmission format number for defining the transmission format (transmission block size, etc.) of E-DPDCH, information on HA RQ (number of retransmissions, etc.) Then, EUL control data such as scheduling information (transmission power, buffer retention, etc. at the mobile station UE) is transmitted.
- E-DPDCH enhanced dedicated physical data channel
- E-DPCCH enhanced dedicated physical control channel
- E-DPCCH enhanced dedicated physical control channel
- the dedicated physical control channel is a TFCI (Transport Format Combination Indicator) that identifies the symbol used for RAKE combining and SIR measurement, and the transmission format of the uplink dedicated physical data channel (DPDCH). ) And control data such as transmission power control bits in the downlink.
- TFCI Transport Format Combination Indicator
- the dedicated physical data channel (DPDCH) is mapped to the dedicated physical control channel (DPCCH), and based on the control data transmitted on the dedicated physical control channel (DPCCH), Send user data. However, if there is no user data to be transmitted to the mobile station UE, the dedicated physical data channel ( (DPDCH) is not sent! /.
- RACH random access channel
- the high-speed dedicated physical control channel (HS-DPCCH) is a downlink quality identifier (CQI: Channel
- the mobile station UE includes a bus interface 31, a call processing unit 32, a baseband processing unit 33, an RF unit 34, and a transmission / reception antenna 35. ing.
- Such a function may exist independently as hardware, or may be partly or wholly integrated, or may be configured by a software process. Also good.
- the bus interface 31 is configured to transfer user data output from the call processing unit 32 to another functional unit (for example, a functional unit related to an application).
- the bus interface 31 is configured to transfer user data transmitted from another functional unit (for example, a functional unit related to an application) to the call processing unit 32.
- the call processing unit 32 is configured to perform call control processing for transmitting and receiving user data.
- the baseband signal processing unit 33 performs, on the baseband signal transmitted from the RF unit 34, layer 1 processing including despreading processing, RAKE combining processing, and FEC decoding processing, and MAC-e processing and MAC processing. It is configured to transmit user data obtained by performing MAC processing including -d processing and RLC processing to the call processing unit 32!
- the baseband signal processing unit 33 performs RLC processing, MAC processing, and layer 1 processing on the user data transmitted from the call processing unit 32, generates a baseband signal, and transmits the baseband signal to the RF unit 34. It is configured to
- the RF unit 34 performs detection processing and processing on the radio frequency band signal received via the transmission / reception antenna 35.
- a baseband signal is generated by performing filtering processing, quantization processing, and the like, and is transmitted to the baseband signal processing unit 33.
- the RF unit 34 is configured to convert the baseband signal transmitted from the baseband signal processing unit 33 into a radio frequency band signal.
- the baseband signal processing unit 33 includes an RLC processing unit 33a, a MAC-d processing unit 33b, a MAC-e processing unit 33c, and a layer 1 processing unit 33d. ing.
- the RLC processing unit 33a is configured to perform processing (RLC processing) in an upper layer of Layer 2 on the user data transmitted from the call processing unit 32 and transmit the processed data to the MAC-d processing unit 33b. Has been.
- the MAC-d processing unit 33b is configured to add a channel identifier header and create a transmission format in the uplink based on the limit of the transmission power in the uplink.
- the MAC-e processing unit 33c includes an E-TFC selection unit 33cl and a HARQ processing unit.
- the E-TFC selection unit 33cl transmits the enhanced dedicated physical data channel (E-DPDCH) and the enhanced dedicated physical control channel (E-DPCCH) based on the scheduling signal transmitted from the radio base station NodeB. It is configured to determine the format (E-TFC).
- E-DPDCH enhanced dedicated physical data channel
- E-DPCCH enhanced dedicated physical control channel
- the E-TFC selection unit 33cl is configured to determine the transmission rate of user data in the uplink.
- the E-TFC selection unit 33cl transmits transmission format information (transmission data block size, enhanced dedicated physical data channel (E-DP DCH) and dedicated physical control channel (DPCCH)) about the determined transmission format. And the transmission data block size or transmission power ratio determined are transmitted to the HARQ processing unit 33c2.
- transmission format information transmission data block size, enhanced dedicated physical data channel (E-DP DCH) and dedicated physical control channel (DPCCH)
- the scheduling signal is the maximum allowable transmission rate of user data in the mobile station UE (for example, the maximum allowable transmission data block size, the enhanced dedicated physical data channel (E-DPDCH) and the dedicated physical control channel ( Transmission power ratio with (DPCCH) Or the parameter related to the maximum permissible transmission rate.
- the maximum allowable transmission rate includes parameters related to the maximum allowable transmission rate.
- a powerful scheduling signal is information broadcast in a cell where the mobile station UE is located, and all the mobile stations located in the cell or the cell is located. Control information for a particular group of mobile stations.
- the E-TFC selection unit 33cl increases the transmission rate of user data in the uplink until reaching the maximum allowable transmission rate notified by the schedule signal from the radio base station NodeB, It is configured as follows.
- the E-TFC selection unit 33cl is configured to determine the transmission rate of user data in the uplink based on the maximum allowable transmission rate notified by the schedule signal from the radio base station NodeB. RU
- the HARQ processing unit 33c2 performs process management of "N process stop undo" and is based on a delivery confirmation signal (Ack / Nack for uplink data) received by the radio base station Node B! /, Configured to transmit user data in the uplink! RU
- the HARQ processing unit 33c2 determines whether or not the downlink user data reception process is successful based on the CRC result input from the layer 1 processing unit 33d. Then, the HARQ processing unit 33c2 generates a delivery confirmation signal (Ack or Nack for downlink user data) based on the strong determination result and transmits it to the layer 1 processing unit 33d. In addition, when the above determination result is OK, the H ARQ processing unit 33c2 transmits the downlink user data input from the layer 1 processing unit 33d to the MAC-d processing unit 33d.
- a delivery confirmation signal Ack or Nack for downlink user data
- the radio base station NodeB includes an HWY interface 11, a baseband signal processing unit 12, a call control unit 13, and one or a plurality of transmission / reception units. 14, one or a plurality of amplifier units 15, and one or a plurality of transmission / reception antennas 16.
- the HWY interface 11 is an interface with the radio network controller RNC.
- the HWY interface 11 is configured to receive user data to be transmitted to the mobile station UE via the downlink from the radio network controller RNC and to input the user data to the baseband signal processing unit 12. .
- the HWY interface 11 is a wireless line control
- the control data for the radio base station NodeB is received from the station RNC and input to the call control unit 13.
- the HWY interface 11 acquires user data included in an uplink signal that has also received the mobile station UE power from the baseband signal processing unit 12 via the uplink, and transmits the user data to the radio network controller RNC. Is configured to do. Further, the HWY interface 11 is configured to acquire control data for the radio network controller RNC from the call controller 13 and transmit it to the radio network controller RNC.
- the baseband signal processing unit 12 performs RLC processing, MAC processing (MAC-d processing and MAC-e processing), and layer 1 processing on user data acquired from the HWY interface 11, and performs baseband signal processing. Is generated and transferred to the transceiver 14
- downlink MAC processing includes HARQ processing, scheduling processing, transmission rate control processing, and the like.
- downlink layer 1 processing includes channel coding processing and spreading processing of user data.
- the baseband signal processing unit 12 performs layer 1 processing, MAC processing (MAC-e processing and MAC-d processing), and RLC processing on the baseband signal that has also acquired the transmission / reception unit 14 power, and performs user processing. It is configured to extract data and transfer it to the HWY interface 11.
- uplink MAC processing includes HARQ processing, scheduling processing, transmission rate control processing, header discard processing, and the like.
- layer 1 processing in the uplink includes despreading processing, RAKE combining processing, error correction decoding processing, and the like.
- the call control unit 13 performs call control processing based on the control data acquired from the HWY interface 11.
- the call control unit 13 responds to the maximum allowable transmission rate report request transmitted from the radio network controller RNC, and finally notifies the mobile station UE connected to the subordinate cell of the maximum allowable It is configured to report the transmission rate (maximum allowable transmission data block size and maximum allowable transmission power ratio).
- the call control unit 13 may be configured to report the maximum allowable transmission rate when the maximum allowable transmission rate falls below or exceeds a predetermined threshold, and the predetermined cycle May be configured to report the maximum permissible transmission rate.
- the transmission / reception unit 14 is configured to perform processing for converting the baseband signal acquired from the baseband signal processing unit 12 into a radio frequency band signal (downlink signal) and to transmit the signal to the amplifier unit 15. .
- the transceiver unit 14 is configured to perform a process of converting a radio frequency band signal (uplink signal) acquired from the amplifier unit 15 into a baseband signal and transmit the baseband signal to the baseband signal processing unit 12.
- the amplifier unit 15 is configured to amplify the downlink signal acquired from the transmission / reception unit 14 and transmit the amplified downlink signal to the mobile station UE via the transmission / reception antenna 16.
- the amplifier unit 15 is configured to amplify the uplink signal received by the transmission / reception antenna 16 and transmit it to the transmission / reception unit 14.
- the baseband signal processing unit 12 includes an RLC processing unit 121, a MAC-d processing unit 122, and a MAC-e and layer 1 processing unit 123.
- the MAC-e and layer 1 processing unit 123 is configured to perform despreading processing, RAKE combining processing, error correction decoding processing, HARQ processing, and the like on the baseband signal acquired from the transmission / reception unit 14. Yes.
- the MAC-d processing unit 122 is configured to perform a header discarding process on the output signals from the MAC-e and the layer 1 processing unit 123.
- the RLC processing unit 121 is configured to perform retransmission control processing in the RLC layer, RLC-SDU reconstruction processing, and the like on the output signal from the MAC-d processing unit 122.
- the MAC-e and layer 1 processing unit (uplink configuration) 123 includes a DPCC H RAKE unit 123a, a DPDCH RAKE unit 123b, an E-DPCCH RAKE unit 123c, and an E- DPDCH RAKE unit 123d, HS-DPCCH RAKE unit 123e, RACH processing unit 123f, TFCI decoder 123g, nofers 123h and 123m, re-despreading units 123i and 123n, FEC decoder units 123j and 123p E-DPCCH decoder part 123k and MAC-e function Unit 1231, HARQ buffer 123 ⁇ , MAC-hs function unit 123q, and interference power measurement unit 123r.
- the E-DPCCH RAKE unit 123c applies despread processing and dedicated physical control channel (DPCCH) to the enhanced dedicated physical control channel (E-DPCCH) in the baseband signal transmitted from the transmitting / receiving unit 14. It is configured to perform RAKE synthesis using pilot symbols! Speak.
- DPCCH dedicated physical control channel
- E-DPCCH enhanced dedicated physical control channel
- the E-DPCCH decoder unit 123k performs a decoding process on the RAKE composite output of the E-DPCCH RAKE unit 123c to obtain a transmission format number, information on HARQ, information on scheduling, etc.
- e Function unit 1231 is configured to be input.
- the E-DPDCH RAKE unit 123d transmits the transmission format transmitted from the MAC-e function unit 1231, for the enhanced dedicated physical data channel (E-DPDCH) in the baseband signal transmitted from the transceiver unit 14. It is configured to perform despreading processing using information (number of codes) and RAKE combining processing using pilot symbols included in the dedicated physical control channel (DPCCH).
- E-DPDCH enhanced dedicated physical data channel
- the noffer 123m is configured to accumulate the RAKE composite output of the E-DPDCH RAKE unit 123d based on the transmission format information (number of symbols) transmitted from the MAC-e function unit 1231.
- re-despreading unit 123 ⁇ Based on the transmission format information (spreading rate) transmitted from MAC-e function unit 1231, re-despreading unit 123 ⁇ performs the RAKE combined output of E-DPDCH RAKE unit 123d stored in buffer 123m. Thus, it may be configured to perform despreading processing.
- the HARQ buffer 123 ⁇ is configured to accumulate the despread processing output of the re-despreading unit 123 ⁇ based on the transmission format information transmitted from the MAC-e function unit 1231.
- the FEC decoder unit 123 ⁇ performs the despreading process of the re-despreading unit 123 ⁇ stored in the HARQ buffer 123 ⁇ based on the transmission format information (transmission data block size) transmitted from the MAC-e function unit 1231.
- An error correction decoding process (FEC decoding process) is performed on the output.
- the interference power measurement unit 123r is configured to measure the amount of interference (noise rise) in the uplink, for example, interference power by a mobile station using its own cell as a serving cell, overall interference power, and the like. ing.
- noise rise is a ratio (from the noise floor) of interference power in a predetermined channel within a predetermined frequency to noise power within the predetermined frequency (thermal noise power or noise power from outside the mobile communication system). Received signal level).
- the noise rise is an offset that is received with respect to the reception level (noise floor) of the state when the communication is performed and the reception level power of the state is communicated.
- the MAC-e function unit 1231 transmits transmission format information (the number of codes, the number of symbols, and the spread) based on the transmission format number, HARQ information, scheduling information, etc. acquired from the E-DPCCH decoder unit 123k. Rate, transmission data block size, etc.) are calculated and output.
- transmission format information the number of codes, the number of symbols, and the spread
- the MAC-e function unit 1231 includes a reception processing command unit 12311, an HA
- An RQ management unit 12312 and a scheduling unit 12313 are provided.
- the reception processing command unit 12311 is configured to transmit the transmission format number, information about HARQ, and information about scheduling input from the E-DPCCH decoder unit 123k to the HARQ management unit 12312.
- reception processing command section 12311 is configured to transmit information related to scheduling input from E-DPCCH decoder section 123k to scheduling section 12313.
- reception processing command section 12311 is configured to output transmission format information corresponding to the transmission format number input from E-DPCCH decoder section 123k!
- the HARQ management unit 12312 determines whether or not the reception process of the uplink user data is successful based on the CRC result input from the FEC decoder unit 123p. Then, the H ARQ management unit 12312 generates a delivery confirmation signal (Ack or Nack) based on the strong determination result and transmits it to the downlink configuration of the baseband signal processing unit 12. Also, if the above determination result is OK, the HAR Q management unit 12312 determines whether the FEC decoder unit 123p The uplink user data input from the terminal is transmitted to the radio network controller RNC.
- a delivery confirmation signal Ack or Nack
- the HARQ management unit 12312 clears the soft decision information stored in the HARQ buffer 123 ⁇ .
- the HARQ management unit 12312 accumulates uplink user data in the HARQ buffer 123 ⁇ .
- the HARQ management unit 12312 transfers the above-described determination result to the reception processing command unit 12311.
- the reception processing command unit 12311 based on the received determination result, provides hardware resources to prepare for the next TTI. Is sent to the E-DPDCH RAKE unit 123d and the buffer 123m, and the HARQ buffer 123 ⁇ is notified for securing resources.
- the reception processing command unit 12311 is stored in the H ARQ buffer 123 ⁇ .
- the HARQ buffer 123 ⁇ and the FEC decoder unit 123 ⁇ are instructed to perform the FEC decoding process after adding the uplink user data and the newly received uplink user data in the process corresponding to the TTI.
- the scheduling unit 12313 determines the maximum allowable transmission speed (maximum allowable transmission data block size and the like based on the uplink radio resource of the radio base station NodeB, the interference amount (noise rise) in the uplink, and the like. Instruct the downlink configuration of the baseband signal processing unit 12 to notify the scheduling signal including the maximum allowable transmission power ratio.
- the scheduling unit 12313 determines the scheduling-related information (radio resource in the uplink) transmitted from the E-DPCCH decoder unit 123k and the uplink interference amount transmitted from the interference power measurement unit 123r. Based on this, the maximum allowable transmission rate is determined, and the transmission rate of user data in the mobile station in communication is controlled.
- the scheduling unit 12313 uses the absolute rate allocation channel (AGCH) to the mobile station UE connected to the subordinate cell. It is configured to broadcast the maximum allowable transmission rate.
- AGCH absolute rate allocation channel
- the scheduling unit 12313 sets the maximum allowable transmission rate low. In order to prevent the shortage of hardware resources.
- the scheduling unit 12313 sets the maximum allowable transmission rate again when there is a surplus in hardware resources, such as when user data transmission in a mobile station connected to a subordinate cell ends. Set high.
- the scheduling unit 12313 sets the maximum allowable transmission rate to the mobile station UE connected to the subordinate cell using the absolute rate allocation channel (AGC H). Configured to inform! Speak.
- AGC H absolute rate allocation channel
- the scheduling unit 12313 increases the transmission rate of user data in the mobile station UE connected to the subordinate cell, and the interference amount (for example, noise rise) in the uplink is an allowable value (for example, the maximum allowable noise rise). ) Exceeds the maximum allowable transmission rate so that the amount of uplink interference falls within the allowable value (see Fig. 3).
- the scheduling unit 12313 when the user data transmission in the mobile station UE connected to the subordinate cell is terminated, the uplink interference amount (for example, noise level) is an allowable value (for example, the maximum allowable value). If it is within the noise rise) and there is a margin, set the maximum allowable transmission rate higher again (see Figure 3).
- the uplink interference amount for example, noise level
- the maximum allowable value for example, the maximum allowable value
- the radio network controller RNC is an apparatus positioned above the radio base station NodeB, and is configured to control radio communication between the radio base station NodeB and the mobile station UE. ing.
- the radio network controller RNC includes a switching center interface 51, an LLC layer processing unit 52, a MAC layer processing unit 53, a media signal processing unit 54, A base station interface 55 and a call control unit 56 are provided.
- the switching center interface 51 is an interface with the switching center 1.
- the switching center interface 51 transfers the downlink signal transmitted from the switching center 1 to the LLC layer processing unit 52, and transfers the uplink signal transmitted from the LLC layer processing unit 52 to the switching center 1. It is configured.
- the LLC layer processing unit 52 is configured to perform LLC (Logical Link Control) sublayer processing such as header processing such as a sequence number or trailer combining processing. After performing LLC sublayer processing, the LLC layer processing unit 52 transmits an uplink signal to the switching center interface 51, and transmits a downlink signal to the MAC layer processing unit 53. It is composed!
- LLC Logical Link Control
- the MAC layer processing unit 53 is configured to perform MAC layer processing such as priority control processing and header assignment processing. After performing the MAC layer processing, the MAC layer processing unit 53 transmits the uplink signal to the LLC layer processing unit 52 and transmits the downlink signal to the base station interface 55 (or the media signal processing unit 54). It is configured as follows.
- the media signal processing unit 54 is configured to perform media signal processing on audio signals and real-time image signals.
- the media signal processing unit 54 is configured to perform media signal processing, and then transmit an uplink signal to the MAC layer processing unit 53 and transmit a downlink signal to the base station interface 55. ! RU
- the base station interface 55 is an interface with the radio base station NodeB.
- the base station interface 55 transfers the uplink signal transmitted from the radio base station NodeB to the MAC layer processing unit 53 (or media signal processing unit 54), and the MAC layer processing unit 53 (or media signal processing unit). 54)
- the power is also configured to forward the transmitted downlink signal to the radio base station NodeB.
- the call control unit 56 is configured to perform a radio resource management process for managing radio resources such as a call admission control process and a node over process, and a channel setup and release process by layer 3 signaling! Speak.
- the call control unit 56 determines the maximum allowable transmission rate of user data in the uplink broadcast to the mobile station connected to the specific radio base station, with respect to the specific radio base station. Configured to get from the station.
- the call control unit 56 is configured to manage radio resources for transmitting uplink user data based on the acquired maximum allowable transmission rate. [0144] Note that the call control unit 56 is configured to acquire the maximum allowable transmission rate by requesting the radio base station to report the above-mentioned maximum allowable transmission rate. It may be.
- step S1001 a communication start request (new) is sent to the radio network controller RNC via the mobile station UE power radio base station NodeB located in a specific cell. (Enhanced dedicated physical channel (E-DPCH) setting request) is transmitted.
- E-DPCH Enhanced dedicated physical channel
- step S1002 the radio network controller RNC power radio base station NodeB
- step S1003 in response to the request for reporting the maximum allowable transmission rate received by the radio base station NodeB, the radio network controller RNC was last notified to the mobile station located in the specific cell. A maximum allowable transmission rate report response for reporting the maximum allowable transmission rate of uplink user data is transmitted.
- the radio network controller RNC determines whether or not to accept a communication start request based on the reported maximum permissible transmission speed of the radio network controller RNC force (force force power to set a new enhanced dedicated physical channel (E-DPCH)) For example, if the maximum permissible transmission speed falls below a predetermined threshold, the radio network controller RNC determines that a new non-specific dedicated physical channel (E-DP CH) is not set.
- E-DPCH enhanced dedicated physical channel
- step S1004 the radio network controller RNC transmits a connection setting request to the radio base station NodeB, and in step S1005 Wireless base station NodeB power Sends a connection setup response to the radio network controller RNC.
- steps S1006 and S1007 a control channel is set between the mobile station UE and the radio network controller RNC.
- step S1008 the user data channel via the core network CN is set between the mobile station UE and the communication partner, and in step S1009, communication using the user data channel is started.
- the mobile station UE moves to the radio base station NodeB # 1 and to the radio base station NodeB # 2. The operation of performing the handover process will be described.
- step S2001 the mobile station UE
- Radio network controller RNC power If it is determined that the above-described handover process is necessary, in step S2002, the radio base station NodeB is finally notified to the mobile station located in the specific cell. A request for reporting a maximum allowable transmission rate requesting to report the maximum allowable transmission rate of the uplink user data is transmitted.
- step S2003 in response to the request for reporting the maximum allowable transmission rate received by the radio base station NodeB, the uplink last reported to the mobile station located in the specific cell to the radio network controller RNC.
- a maximum allowable transmission rate report response for reporting the maximum allowable transmission rate of user data is transmitted.
- the radio network controller RNC performs handover to the radio base station NodeB # 2 when the maximum permissible transmission rate is below a predetermined threshold. It is determined that processing should not be performed.
- Radio network controller RNC power If it is determined that the above handover process can be performed, in step S2004, radio network controller RNC power prepares to change the cell to which the mobile station UE is connected. A connection change preparation request is sent to the radio base station NodeB # 1, and in step S2005, the radio base station NodeB # 1 prepares for the connection change preparation request and prepares for When the message is completed A connection change preparation response is sent to the radio network controller RNC.
- step S2006 a connection change preparation request is sent to the radio base station NodeB # 2 instructing to prepare for changing the cell to which the radio network controller RNC-powered mobile station UE is connected, and in step S2007. Then, the radio base station NodeB # 2 prepares for the connection change preparation request, and transmits a connection change preparation response notifying that the preparation for making a connection is completed to the radio network controller RNC.
- step S2008 the radio network controller RNC requests the radio base station NodeB # 1 to release a connection for releasing the connection between the mobile station UE and the radio base station NodeB # 1.
- Steps S2009 and S2010 connection settings for setting the connection between the mobile station UE and the corresponding radio base station NodeB # 2 to the radio base station Nod eB # 2 and the mobile station UE, respectively. Send a request.
- step S2011 communication using the user data channel set between the mobile station UE and the radio base station NodeB # 2 is started.
- the radio network controller RN controls the radio network controller RN.
- C can accurately grasp the radio communication quality of mobile stations under each cell, and can perform high-performance radio resource management.
- the radio network controller RN controls the radio network controller RN.
- C By transmitting the maximum allowable transmission rate report request, C can accurately grasp the maximum allowable transmission rate of the mobile station under the specified cell at the required timing, and perform high-performance radio resource management. Can do.
- the radio network controller RN controls the radio network controller RN.
- C can accurately grasp the maximum allowable transmission rate of mobile stations under a specific cell periodically without requesting, and can perform high-performance radio resource management.
- a radio resource management method As described above, according to the present invention, a radio resource management method, a radio resource management method capable of accurately grasping radio communication quality of mobile stations under each cell and performing high-performance radio resource management, A base station and a radio network controller can be provided.
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Quality & Reliability (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Description
Claims
Priority Applications (5)
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JP2006552946A JP4584270B2 (ja) | 2005-01-11 | 2006-01-11 | 無線リソース管理方法、無線基地局及び無線回線制御局 |
EP06702638A EP1848234B1 (en) | 2005-01-11 | 2006-01-11 | Wireless resource management method, wireless base station, and base station controller |
US11/794,975 US7978663B2 (en) | 2005-01-11 | 2006-01-11 | Wireless resource management method, wireless base station, and wireless line control station |
CN2006800020920A CN101103643B (zh) | 2005-01-11 | 2006-01-11 | 无线资源管理方法、无线基站及无线线路控制台 |
DE602006017333T DE602006017333D1 (de) | 2005-01-11 | 2006-01-11 | Verfahren zur verwaltung drahtloser ressourcen, basisstation und basisstationssteuerung |
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JP2005004589 | 2005-01-11 | ||
JP2005-004589 | 2005-01-11 |
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WO2006075630A1 true WO2006075630A1 (ja) | 2006-07-20 |
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PCT/JP2006/300229 WO2006075630A1 (ja) | 2005-01-11 | 2006-01-11 | 無線リソース管理方法、無線基地局及び無線回線制御局 |
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US (1) | US7978663B2 (ja) |
EP (1) | EP1848234B1 (ja) |
JP (1) | JP4584270B2 (ja) |
KR (1) | KR100913517B1 (ja) |
CN (1) | CN101103643B (ja) |
DE (1) | DE602006017333D1 (ja) |
ES (1) | ES2353611T3 (ja) |
WO (1) | WO2006075630A1 (ja) |
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KR100895059B1 (ko) * | 2005-01-11 | 2009-05-04 | 가부시키가이샤 엔.티.티.도코모 | 전송 속도 제어 방법, 이동국 및 무선 네트워크 제어국 |
US20090036153A1 (en) * | 2006-02-06 | 2009-02-05 | Junya Yamazaki | Base station and communication system |
JP4989513B2 (ja) * | 2008-02-22 | 2012-08-01 | 株式会社エヌ・ティ・ティ・ドコモ | 無線通信システム、無線通信方法及び基地局 |
JP5052404B2 (ja) * | 2008-05-01 | 2012-10-17 | 株式会社エヌ・ティ・ティ・ドコモ | 無線基地局及び移動通信方法 |
US9584416B2 (en) * | 2009-06-08 | 2017-02-28 | Qualcomm Incorporated | Systems and methods to provide flow control for mobile devices |
CN101888670B (zh) * | 2010-06-29 | 2013-01-30 | 华为技术有限公司 | 无线资源管理方法、装置、无线网络控制器和基站 |
US8886239B2 (en) * | 2010-09-21 | 2014-11-11 | Qualcomm Incorporated | Buffer status report control for creating transmission gaps |
CN103249164B (zh) * | 2013-04-08 | 2015-10-28 | 江苏物联网研究发展中心 | 一种链状无线网络的资源调度方法及基站 |
CN103476123B (zh) * | 2013-08-30 | 2016-08-10 | 西安电子科技大学 | LTE网络视频业务QoE保障资源分配方法 |
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- 2006-01-11 US US11/794,975 patent/US7978663B2/en not_active Expired - Fee Related
- 2006-01-11 ES ES06702638T patent/ES2353611T3/es active Active
- 2006-01-11 EP EP06702638A patent/EP1848234B1/en not_active Not-in-force
- 2006-01-11 JP JP2006552946A patent/JP4584270B2/ja not_active Expired - Fee Related
- 2006-01-11 DE DE602006017333T patent/DE602006017333D1/de active Active
- 2006-01-11 CN CN2006800020920A patent/CN101103643B/zh not_active Expired - Fee Related
- 2006-01-11 WO PCT/JP2006/300229 patent/WO2006075630A1/ja active Application Filing
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Publication number | Publication date |
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CN101103643B (zh) | 2010-09-29 |
EP1848234A4 (en) | 2009-01-21 |
CN101103643A (zh) | 2008-01-09 |
US20080146243A1 (en) | 2008-06-19 |
KR100913517B1 (ko) | 2009-08-21 |
EP1848234B1 (en) | 2010-10-06 |
JPWO2006075630A1 (ja) | 2008-06-12 |
ES2353611T3 (es) | 2011-03-03 |
US7978663B2 (en) | 2011-07-12 |
KR20070087243A (ko) | 2007-08-27 |
DE602006017333D1 (de) | 2010-11-18 |
JP4584270B2 (ja) | 2010-11-17 |
EP1848234A1 (en) | 2007-10-24 |
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