WO2006080238A1 - Système d’allocation de ressource, station mobile et station de base - Google Patents

Système d’allocation de ressource, station mobile et station de base Download PDF

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Publication number
WO2006080238A1
WO2006080238A1 PCT/JP2006/300766 JP2006300766W WO2006080238A1 WO 2006080238 A1 WO2006080238 A1 WO 2006080238A1 JP 2006300766 W JP2006300766 W JP 2006300766W WO 2006080238 A1 WO2006080238 A1 WO 2006080238A1
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WO
WIPO (PCT)
Prior art keywords
signal
packet
transmission
mobile station
resource
Prior art date
Application number
PCT/JP2006/300766
Other languages
English (en)
Japanese (ja)
Inventor
Naoto Oka
Original Assignee
Matsushita Electric Industrial Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co., Ltd. filed Critical Matsushita Electric Industrial Co., Ltd.
Publication of WO2006080238A1 publication Critical patent/WO2006080238A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
    • 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]
    • H04W28/26—Resource reservation
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

Definitions

  • the present invention relates to a resource allocation system in which a mobile station allocates resources necessary for communication with a base station, and a mobile station and a base station in this resource allocation system.
  • FIG. 1 is a diagram for explaining an example of operation when communication is performed with a mobile station power base station according to a conventional resource allocation method.
  • the mobile station 10 transmits a reservation signal 20 to the base station 11 before transmitting the packet 22.
  • the reservation signal 20 stores priority, transmission packet length, and other control data.
  • the mobile station 10 can transmit a packet having a transmission packet length included in the reservation signal 20 in accordance with the priority included in the reservation signal 20. Allocate resources (code, power, time, etc.) to generate an allocation signal 21 and transmit it to the mobile station 10.
  • the mobile station 10 When the mobile station 10 receives the assignment signal 21 from the base station 11, the mobile station 10 transmits the packet 22 to the base station 11 according to the conditions (code, power, time, modulation method, etc.) of the received assignment signal 21.
  • the base station 11 When receiving the packet transmitted from the mobile station 10, the base station 11 transmits an affirmative response signal (ACK signal) 23 to the mobile station 10.
  • ACK signal affirmative response signal
  • the mobile station 10 When the mobile station 10 receives the ACK signal 23 from the base station 11, the mobile station 10 recognizes the arrival of the transmitted packet 22 to the base station 11 and transmits the packet 22 from the base station 11 to the mobile station 10. Complete a series of processes. When the mobile station 10 becomes unable to receive the ACK signal 23, it transmits a reservation signal to the base station 11 again.
  • Patent Document 1 Japanese Unexamined Patent Application Publication No. 2004-128967
  • the mobile station when the mobile station receives resource allocation for transmitting an uplink packet from the base station, the mobile station transmits a reservation signal to the base station for each packet. Since it is necessary to receive an allocation signal for the reservation signal from the base station, there is a problem that the amount of control information transmitted and received for transmitting a packet increases.
  • An object of the present invention has been made in view of the strong point, and a resource allocation system capable of reducing the amount of control information transmitted and received for transmitting a packet, a mobile station in the resource allocation system, and Is to provide a base station.
  • a resource allocation system is a resource allocation system comprising resource request means installed in a mobile station and resource allocation means installed in a base station.
  • the resource requesting means notifies the base station of a reservation signal having information on the mobile station identification code, transmission interval and transmission packet length before transmitting the first packet, and the resource allocation means A configuration is adopted in which a resource capable of transmitting the transmission packet length of the reservation signal is allocated to the mobile station related to the reservation signal for each transmission interval of the reservation signal notified by the means.
  • a resource allocation system is a resource allocation system comprising resource request means installed in a mobile station and resource allocation means installed in a base station.
  • the resource requesting means notifies the base station of a reservation signal having information on the mobile station identification code, transmission interval and transmission packet length before transmitting the first packet, and the resource allocation means
  • a resource capable of transmitting the transmission packet length of the reservation signal is allocated to the mobile station related to the reservation signal according to the current radio quality for each transmission interval of the reservation signal notified by the means. Take the configuration.
  • the resource requesting means of the mobile station notifies the base station of the reservation signal having the mobile station identification code and the mobile station transmitting the first packet with the transmission interval and transmission packet length information.
  • the mobile station assigns a resource that can transmit the transmission packet length of the reservation signal to the mobile station related to the reservation signal for each transmission interval of the reservation signal.
  • it is not necessary to transmit a reservation signal ! it is possible to reduce the transmission / reception amount of control information for transmitting packets.
  • FIG. 1 is a diagram for explaining an example of an operation when communication is performed from a mobile station to a base station according to a conventional resource allocation method
  • FIG. 2 is a block diagram showing configurations of a mobile station and a base station to which the resource allocation system according to an embodiment of the present invention is applied.
  • FIG. 3 is a diagram for explaining a periodic transmission table of a base station to which a resource allocation system according to an embodiment of the present invention is applied.
  • FIG. 4 is a diagram for explaining an example of an operation when performing real-time communication with the mobile station power base station according to the embodiment of the present invention.
  • FIG. 5 is a flowchart for explaining the operation when the base station according to the embodiment of the present invention receives a control signal or a packet.
  • FIG. 6 is a flowchart for explaining an operation in which a base station according to an embodiment of the present invention allocates resources for RT packets from entries in a periodic transmission table.
  • FIG. 7 is a diagram for explaining an example of radio resource allocation status in the base station according to the embodiment of the present invention.
  • FIG. 2 is a block diagram showing configurations of a mobile station and a base station to which the resource allocation system according to one embodiment of the present invention is applied.
  • mobile station 100 includes a transmission unit 101 and a reception unit 102.
  • the transmission unit 101 has a resource request unit 1011.
  • the base station 110 includes a reception unit 111, a transmission unit 112, a signal conversion unit 113, a signal analysis unit 114, a radio quality analysis unit 115, an allocation determination unit 116, a periodic transmission management unit 117, and a radio resource management unit 118. And a control signal generation unit 119.
  • the regular transmission management unit 117 has a regular transmission table 1171.
  • the periodic transmission table 1171 holds information on a flow ID including an identification code of the mobile station 100, transmission interval, allowable jitter, transmission packet length, radio quality, and periodic transmission timer.
  • the resource request unit 1011 of the transmission unit 101 of the mobile station 100 transmits signals such as a reservation signal and an end signal to the base station 110 using the uplink channel.
  • the reservation signal has information on the mobile station identification code, transmission interval, and transmission packet length.
  • the transmission unit 101 of the mobile station 100 transmits a signal such as a packet to the base station 110 using an uplink channel.
  • the receiving unit 102 of the mobile station 100 receives signals such as an allocation signal and an acknowledgment signal (ACK signal) transmitted from the base station 110 using the downlink channel, and analyzes the signal.
  • ACK signal acknowledgment signal
  • the receiving unit 111 of the base station 110 receives a signal such as a reservation signal, a packet, and an end signal transmitted from the mobile station 100 using an uplink channel, generates a received signal, and generates a received signal.
  • a signal such as a reservation signal, a packet, and an end signal transmitted from the mobile station 100 using an uplink channel
  • the transmission unit 112 of the base station 110 transmits signals such as an allocation signal and an ACK signal transferred from the signal conversion unit 113 to the mobile station 100 using the downlink channel.
  • Signal conversion section 113 performs conversion processing (such as despreading, demodulation, and decoding processing) on the received signal transferred from reception section 111, and transfers the received signal after the conversion processing to signal analysis section 114. Further, the signal conversion unit 113 performs conversion processing (spreading, modulation, encoding processing, etc.) of the control signal and the lower data transferred from the control signal generation unit 119, and transfers the converted signal to the transmission unit 112. To do.
  • conversion processing such as despreading, demodulation, and decoding processing
  • the signal analysis unit 114 receives a packet by analyzing the received signal transferred from the signal conversion unit 113 and associating the radio quality information notified from the radio quality analysis unit 115, The data is output as upstream data to the host device, and the control signal generation unit 119 is notified of the ACK generation request signal.
  • the signal analysis unit 114 displays the radio quality rewrite signal, the flow ID of the packet, and radio quality information.
  • the periodic transmission management unit 117 is notified.
  • the signal analysis unit 114 When the signal analysis unit 114 receives a reservation signal and the priority is non-real time (NRT), the signal analysis unit 114 transmits a transmission request (NRT) signal, flow ID, transmission packet length, and radio quality information. Is notified to the allocation determination unit 116. Further, when the priority information is real time (RT), the signal analysis unit 114 periodically transmits a table entry request signal and flow ID, transmission interval, allowable jitter, transmission packet length, and radio quality information. The management unit 117 is notified. In addition, when receiving the end signal, the signal analysis unit 114 notifies the periodic transmission management unit 117 of the table entry end signal and the flow ID.
  • Radio quality analysis section 115 analyzes the radio quality of the received signal transferred from reception section 111 to generate radio quality information and notifies signal analysis section 114 of the radio quality information.
  • the allocation determination unit 116 receives a plurality of transmission requests notified from the signal analysis unit 114 and the periodic transmission management unit 117, information on priority, transmission packet length, and radio quality associated with these transmission requests, Scheduling is performed according to the uplink radio resource remaining amount notified from radio resource management section 118. That is, the allocation determining unit 116 allocates, to the mobile station related to the reservation signal, a resource that can transmit the transmission packet length of the reservation signal for each transmission interval of the reservation signal. In this case, the RT packet has priority over the NRT packet.
  • the allocation determination unit 116 assigns the resource that can transmit the transmission packet length of the reservation signal for each transmission interval of the reservation signal according to the current radio quality to the movement related to the reservation signal. Assign to a station. In this case, the allocation determination unit 116 has an effect that the amount of allocation resources can be adaptively changed according to the current radio quality.
  • allocation determination section 116 receives a radio resource allocation signal generation request for mobile station 100 to transmit a packet whose allocation has been determined, and information stored in the allocation signal (power, time, code, modulation scheme, etc.) To the control signal generator 119. Furthermore, the allocation determination unit 116 notifies the radio resource management unit 118 of the allocated radio resource amount.
  • periodic transmission management section 117 is an entry in which the amount of periodic transmission uplink radio resources notified from radio resource management section 118 has already been written. Resource amount and request resource (transmission interval and transmission packet If it is greater than the sum of the table entry request signal, the flow ID, transmission interval, allowable jitter, transmission packet length, and radio quality information associated with the table entry request signal are written to the periodic transmission table 1171 as a new entry. Further, the periodic transmission management unit 117 notifies the allocation determination unit 116 of the transmission request signal (RT signal) and the flow ID, transmission packet length, and radio quality information corresponding to the entry.
  • RT signal transmission request signal
  • the periodic transmission management unit 117 deletes the entry corresponding to the flow ID associated with the table entry end signal from the periodic transmission table 1171. Further, when the radio quality rewriting signal is notified from the signal analysis unit 114, the periodic transmission management unit 117 rewrites the radio quality information of the entry corresponding to the flow ID associated with the radio quality rewriting signal.
  • the periodic transmission management unit 117 refers to the periodic transmission table 1171, and an entry in which the value of the periodic transmission timer of the periodic transmission table 1171 is ⁇ (transmission interval) one (allowable jitter / 2) ⁇ or more is entered. If it exists, the allocation determination unit 116 is notified of the transmission request (RT) signal and the flow ID, priority (RT), allowable jitter, transmission packet length, and radio quality information corresponding to the entry.
  • the periodic transmission timer of the periodic transmission table 1171 is a counter that repeatedly counts from 0 to the transmission interval value of the same entry.
  • Radio resource management section 118 manages the radio resource allocation status (power, time, code, etc.), and notifies allocation determination section 116 of the remaining uplink radio resource.
  • the allocation status of the uplink radio resource is updated from the allocation resource amount (power, time, code, etc.) notified from the allocation determination unit 116.
  • the radio resource management unit 118 notifies the periodic transmission management unit 117 of the amount of periodic transmission uplink radio resources so that the total of real-time packets to be periodically transmitted does not exceed the amount of radio resources.
  • Control signal generation section 119 generates an allocation signal when the allocation determination section 116 is notified of a radio resource allocation signal generation request and information (power, time, code, modulation scheme, etc.) stored in the allocation signal. Forward to the signal converter 113. In addition, when an ACK generation request signal is notified from the signal analysis unit 114, the control signal generation unit 119 generates an ACK signal and transfers it to the signal conversion unit 113.
  • FIG. 4 is a diagram for explaining an example of operation when performing real-time communication from the mobile station 100 to the base station 110 according to the embodiment of the present invention.
  • mobile station 100 before transmitting packet 320-1, transmits reservation signal 300 to base station 110.
  • the reservation signal 300 stores the flow ID, priority (set to high priority for real-time communication), transmission interval, allowable jitter, transmission packet length, and other control data. .
  • the base station 110 When the base station 110 receives the reservation signal 300 from the mobile station 100, the base station 110 allocates resources (code, power, time, etc.) that the mobile station 100 can transmit a packet of the transmission packet length included in the reservation signal 300. An allocation signal 310-1 to be allocated is generated and transmitted to the mobile station 100.
  • the mobile station 100 When the mobile station 100 receives the allocation signal 310-1 from the base station 110, the mobile station 100 transmits the packet 320-1 to the base station according to the conditions (code, power, time, modulation method, etc.) of the received allocation signal 310-1. Send to 110.
  • the base station 110 can receive the packet 320-1 transmitted from the mobile station 100, the base station 110 transmits an ACK signal 330-1 to the mobile station 100.
  • the base station 110 transmits the allocation signal 310-2 so that the mobile station 100 can transmit the next packet 320-2 under the condition that the transmission interval stored in the reservation signal 300 and the allowable jitter are satisfied. Transmit to mobile station 100.
  • mobile station 100 When mobile station 100 receives allocation signal 310-2 from base station 110, mobile station 100 transmits packet 320-2 to base station 110 according to the conditions of received allocation signal 310-2.
  • the base station 110 When the base station 110 can receive the packet 320-2 transmitted from the mobile station 100, the base station 110 transmits an ACK signal 33 0-2 to the mobile station 100.
  • FIG. 5 is a diagram for explaining an operation when the base station 110 according to the embodiment of the present invention receives a control signal or a packet.
  • receiving section 111 of base station 110 determines whether it is a control signal (reservation signal 300 or end signal 340) or a packet reception signal.
  • radio quality analyzing section 115 measures the radio quality of the received signal (step ST402), and then signal analyzing section 114 It is determined whether the received signal is the reserved signal 300 (step ST403).
  • the priority information power in the reserved signal 300 is also determined whether the received signal is RT (real time) or NRT (non-real time) (step ST404).
  • periodic transmission managing section 117 determines whether or not the requested resource is smaller than the periodic transmission uplink radio resource remaining amount (step ST405). When the requested resource is smaller than the remaining amount of periodic transmission uplink radio resources in step ST405, periodic transmission management section 117 writes an entry corresponding to the received reservation signal in periodic transmission table 1171 (step ST406), and transmission request (RT). (Step ST407). If the requested resource is not smaller than the periodic transmission uplink radio resource remaining amount in step ST405, the process is terminated.
  • signal analysis section 114 makes a transmission request (NRT) (step ST408).
  • step ST409 allocation determination section 116 determines whether resources have been allocated.
  • control signal generation section 119 generates an allocation signal and transmits it to mobile station 100 (step ST410).
  • step ST409 the allocation determining unit 116 ends the process when the resource is not allocated.
  • entries are restricted by the radio resource management unit 118, so resources are basically allocated.
  • step ST403 if the received signal is not a reserved signal, sometimes signal analysis section 114 determines whether the received signal is a packet storing data (received in step ST41 Do step ST411). When the signal is a packet, the signal analysis unit 114 determines whether the received packet is RT or NRT (step 412).
  • the periodic transmission management unit 11 7 rewrites the wireless quality information of the entry corresponding to the received packet (step ST413) o
  • control signal generation section 119 After step ST413 or when the packet received in step ST412 is NRT, control signal generation section 119 generates an ACK signal and transmits it to mobile station 100 for all received packets (step ST414). ). In addition, signal analysis section 114 transmits the packet to the upper device (step ST415).
  • step ST411 if the received signal is not a packet, signal analysis section 114 determines whether the packet is an end signal (step ST416). When the packet is the end signal in step ST416, periodic transmission management section 117 deletes the entry corresponding to the received end signal (step ST417).
  • FIG. 6 is a flowchart for explaining an operation in which base station 110 according to an embodiment of the present invention performs resource allocation for RT packets from entries in periodic transmission table 1171.
  • the periodic transmission manager 117 refers to the periodic transmission table 1171, and the value of the periodic transmission timer is ⁇ (transmission interval) one (allowable jitter Z2) ⁇ or more. It is determined whether or not there is an entry. If there is an entry whose value of the periodic transmission timer is ⁇ (transmission interval) one (allowable jitter / 2) ⁇ or more in step ST501, a transmission request (RT) is made (step ST502).
  • step ST503 allocation determination section 116 determines whether resources have been allocated.
  • control signal generation section 119 generates an allocation signal and transmits it to mobile station 100 (step ST504). If no resource is allocated in step ST503, the process ends.
  • the radio resource management unit 118 restricts entries, so resources are basically allocated.
  • FIG. 7 is a diagram for explaining an example of a radio resource allocation state in base station 110 according to one embodiment of the present invention. As can be seen from Figure 7, reservations for RT packets Since the signal can be greatly reduced, it is possible to allocate that amount to the transmission of data packets.
  • the present invention is not limited to the above-described embodiment.
  • the trigger of the transmission request (RT) from the periodic transmission table entry is that the value of the periodic transmission timer is ⁇ (transmission interval) one (allowable jitter Z2) ⁇ or more.
  • this is not a limitation.
  • transmission section 101 that transmits a series of packets (real-time packets) to mobile station 100 at a constant transmission interval, and the transmission interval and the packet of each packet.
  • the mobile station 100 transmits a reservation signal before transmitting the first packet for a series of packets to be transmitted, there is no need to send a reservation signal related to each packet, so the packet is transmitted.
  • the amount of control information to be transmitted / received can be reduced.
  • base station 110 relates to a series of packets (real-time packets) related to the series of packets including information on transmission intervals and packet lengths of the packets.
  • a receiving unit 111 that receives a reservation signal before receiving the first packet of the series of packets, and a resource allocating unit that allocates a resource corresponding to the packet length to the series of packets at a timing corresponding to the transmission interval.
  • the base station 110 allocates resources to the series of packets at regular intervals. It has a periodic transmission table 1171 for storing information for monitoring.
  • a resource allocation method of the present invention is a resource allocation method in a resource allocation system comprising resource requesting means installed in a mobile station and resource allocation means installed in a base station, A reservation signal notifying step in which the resource requesting means notifies the base station of a reservation signal having information on the mobile station identification code, transmission interval and transmission packet length before transmitting the first packet; and the resource allocation means Allocating a resource capable of transmitting the transmission packet length of the reservation signal for each transmission interval of the reservation signal notified in the reservation signal notification step to the mobile station related to the reservation signal; It was made to comprise.
  • a resource allocation method of the present invention is a resource allocation method in a resource allocation system comprising resource requesting means installed in a mobile station and resource allocation means installed in a base station, A reservation signal notifying step in which the resource requesting means notifies the base station of a reservation signal having information on the mobile station identification code, transmission interval and transmission packet length before transmitting the first packet; and the resource allocation means A resource that can transmit the transmission packet length of the reservation signal for each transmission interval of the reservation signal notified in the reservation signal notification step depends on the reservation signal according to the current radio quality.
  • An allocation step for allocating to the mobile station is provided.
  • the resource allocation system, mobile station and base station of the present invention are useful for reducing the amount of control information transmitted and received for transmitting packets.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L’invention concerne un système d’allocation de ressource, une station mobile et une station de base pouvant réduire la quantité d’émission/réception d’informations de contrôle nécessaire pour transmettre un paquet. Le système d’allocation de ressource comprend une unité de requête de ressource (1011) disposée dans une station mobile (100) et des unités d’allocation de ressource (116, 117, 118) disposées dans la station de base (110). L’unité de requête de ressource (1011) rapporte un signal de réservation possédant des informations sur un code d’identification de la station mobile (100), un intervalle d’émission et une longueur de paquet de transmission à la station de base (110) avant d’émettre un premier paquet. Les unités d’allocation de ressource (116, 117, 118) allouent une ressource pouvant émettre la longueur de paquet d’émission du signal de réservation selon l’intervalle d’émission du signal de réservation rapporté de l’unité de requête de ressource (1011) à la station mobile (100) associée au signal de réservation.
PCT/JP2006/300766 2005-01-31 2006-01-19 Système d’allocation de ressource, station mobile et station de base WO2006080238A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2005-022879 2005-01-31
JP2005022879 2005-01-31

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Publication Number Publication Date
WO2006080238A1 true WO2006080238A1 (fr) 2006-08-03

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0833020A (ja) * 1994-07-11 1996-02-02 Nippon Telegr & Teleph Corp <Ntt> 無線パケットチャネル設定方法
JP2002262325A (ja) * 2001-02-28 2002-09-13 Nec Corp 移動通信システム
JP2002538655A (ja) * 1999-02-23 2002-11-12 ノキア モービル フォーンズ リミティド セルラーシステムにおいてパケットデータ転送を管理する方法及び装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0833020A (ja) * 1994-07-11 1996-02-02 Nippon Telegr & Teleph Corp <Ntt> 無線パケットチャネル設定方法
JP2002538655A (ja) * 1999-02-23 2002-11-12 ノキア モービル フォーンズ リミティド セルラーシステムにおいてパケットデータ転送を管理する方法及び装置
JP2002262325A (ja) * 2001-02-28 2002-09-13 Nec Corp 移動通信システム

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