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WO2008069094A1 - Système de communications, station de base, terminal, et procédé de communications - Google Patents

Système de communications, station de base, terminal, et procédé de communications Download PDF

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Publication number
WO2008069094A1
WO2008069094A1 PCT/JP2007/073065 JP2007073065W WO2008069094A1 WO 2008069094 A1 WO2008069094 A1 WO 2008069094A1 JP 2007073065 W JP2007073065 W JP 2007073065W WO 2008069094 A1 WO2008069094 A1 WO 2008069094A1
Authority
WO
WIPO (PCT)
Prior art keywords
communication
service identifier
type
base station
service
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2007/073065
Other languages
English (en)
Japanese (ja)
Inventor
Nobuaki Takamatsu
Hironobu Tanigawa
Yasuhiro Nakamura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kyocera Corp
Original Assignee
Kyocera Corp
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 Kyocera Corp filed Critical Kyocera Corp
Publication of WO2008069094A1 publication Critical patent/WO2008069094A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0042—Intra-user or intra-terminal allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0058—Allocation criteria
    • H04L5/0064—Rate requirement of the data, e.g. scalable bandwidth, data priority
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling

Definitions

  • the present invention relates to a communication system, a base station, a terminal, and a communication method thereof used in the communication system.
  • QoS control of radio sections in mobile communication systems such as digital cellular phone systems and PHS systems is realized in the data link layer (MAC layer) in the OSI reference model.
  • QoS Quality of Service
  • MAC layer data link layer
  • QoS Quality of Service
  • the IP header is removed when downlink (downlink) data arrives at the MAC layer. Cannot be controlled using the TOS field.
  • service priority negotiation is performed in the process of call connection from the terminal, and QoS control is performed for each communication path.
  • next-generation mobile communication system when multiple services (also referred to as multicall) are introduced for one user, services with different service priorities may be mixed. It is done. For example, VoIP (Voice Over IP) (for example, the service with the highest service priority) and e-mail (for example, the service with the lowest service priority) that transmits and receives voice data converted into IP packets ) May be mixed.
  • VoIP Voice Over IP
  • e-mail for example, the service with the lowest service priority
  • Patent Document 1 discloses a method for managing a large number of independent simultaneous calls between a mobile communication network and a subscriber terminal.
  • Patent Document 1 Japanese Translation of Special Publication 2005-525934
  • the present invention has been made to solve the above problems, and in a multi-service in which one radio link is shared by a plurality of services, a transmission queue is assigned to each service, and one radio link is provided.
  • the purpose is to obtain a communication system, a base station, a terminal, and a communication method thereof.
  • a communication system is a communication system in which a base station and a terminal are connected by a single radio link for communication, and the single radio link is used. It is characterized by having communication control means that performs multiple different types of communication (claim 1).
  • a transmission unit that transmits a service identifier that specifies the type, and a reception unit that receives the service identifier, the communication control unit, the received service identifier A transmission queue for storing communication data is assigned to each type corresponding to the above (Claim 2).
  • a transmission queue for storing communication data is assigned for each type of communication corresponding to the service identifier, and communication control corresponding to the type of communication can be performed.
  • the communication control means performs control so that the frequency of data transmission differs for each transmission queue according to the service identifier (claim 3).
  • the communication is performed by the OFDMA system, and the communication control unit assigns a subchannel, which is a communication channel in the OFDMA system, according to the type (claim 5).
  • the communication control means assigns the number of subchannels corresponding to the service identifier for each transmission queue (claim 6).
  • the transmission means transmits the service identifier through the subchannel (claim 7).
  • a plurality of different types of communication can be performed using a single radio link by transmitting a service identifier transmission in a subchannel.
  • a base station communicates with a base station connected to a terminal via a single radio link for communication and performs a plurality of different types of communication using the single radio link.
  • Control means and receiving means for receiving a service identifier for specifying the type, wherein the communication control means allocates a transmission queue for storing communication data for each type according to the service identifier, and Control is performed so that the frequency of data transmission differs for each transmission queue in accordance with a service identifier (claim 8).
  • the communication is performed by the OFDMA system, and the communication control unit assigns a communication subchannel in the OFDMA system according to the type (claim 9).
  • a base station that performs OFDMA communication can transmit a service identifier in a subchannel and perform a plurality of different types of communication using a single radio link.
  • a terminal transmits a service identifier that specifies the type of communication according to the type of communication to a terminal that communicates with a base station by connecting with a single radio link! And transmitting means for transmitting the service identifier through a sub-channel that is a communication channel in the OFDMA scheme (claim 10).
  • a communication method is a communication system in which a base station and a terminal are connected by a single radio link for communication, and a plurality of different types of communication are performed using the single radio link.
  • a transmission queue can be assigned to each service, and a plurality of service priorities are assigned to flows in one unfountain link.
  • a base station, a terminal, and a communication method thereof can be obtained.
  • FIG. 1 is an explanatory diagram showing an OFDMA frame configuration used in a communication method according to an embodiment of the present invention.
  • FIG. 2 is a schematic diagram of a communication system according to an embodiment of the present invention. 3] It is a sequence diagram in the communication system according to the embodiment of the present invention.
  • FIG. 4 is a diagram showing a structure of a MAC frame in the communication system according to the embodiment of the present invention.
  • FIG. 1 shows, for example, the frame structure of OFDMA when there are four time slots (S1 to S4) used in the PHS system, the vertical axis is the frequency axis, and the horizontal axis is the time axis. .
  • both the downlink period and the uplink period are divided into 28 frequency bands with respect to the frequency axis.
  • the subchannel of the first frequency band is called the control subchannel and is used in the control channel (CCH).
  • the first frequency band may be either the highest frequency band or the lowest frequency band.
  • the control channel subchannel indicates which subchannel of each time slot is used in each frequency band.
  • the example in Fig. 1 is an example of a PHS system, which is specified by control subchannels C1 to C4. There are 4 base stations. In the PHS system, the control channel is transmitted intermittently every 100 ms.
  • the remaining 27 frequency bands are composed of traffic subchannels T1 to T108 for transmitting and receiving data. There are 27 subchannels in the frequency direction and 4 in the time axis direction, for a total of 108 subchannels. It consists of les.
  • This traffic subchannel is composed of an anchor subchannel and an extra subchannel.
  • An anchor subchannel is used to notify each terminal of which subchannel is used and which terminal is used, and the ability to correctly exchange data by retransmission control between the base station and the terminal. This is a subchannel for use in negotiation.
  • An extra subchannel is a subchannel that transmits data that is actually used, and a plurality of extra subchannels can be assigned to one terminal. In this case, the greater the number of allocated sub-subchannels, the wider the band, so high-speed communication becomes possible.
  • FIG. 2 is a configuration diagram of a communication system according to the embodiment of the present invention.
  • the communication system is a communication system 1 that performs communication by connecting a base station 2 and a terminal 3 with a single wireless link. Connected to
  • the base station 2 is a communication control means 2-1 for controlling the communication of the base station, performing a plurality of different types of communication using a single radio link, and a transmission means for transmitting data and voice to the terminal connected to the antenna.
  • 2-2 equipped with receiving means 2-3 to receive data and voice from the terminal.
  • the terminal 3 includes transmission means 2-2 connected to an antenna and transmitting data and voice to the base station, and reception means 2-3 receiving data and voice from the base station.
  • FIG. 3 shows an example of a sequence of communication procedures between the terminal 2 and the base station 3.
  • the sequence in FIG. 3 is an example in which terminal 2 sends a voice call and receives ⁇ -mail during voice communication (call).
  • the transmission means 3-1 of the terminal 3 transmits a link channel (LCH) establishment request to the connected base station 2.
  • LCH link channel
  • the communication control means 2-1 of the base station 2 that has received the link channel (LCH) establishment request allocates an anchor subchannel (ASCH) based on the carrier sense, and the transmission means 2-2 The location of the anchor subchannel (ASCH) is notified to the terminal by link channel (LCH) allocation.
  • LCH link channel
  • a service flow addition request is transmitted to the base station 2.
  • the service flow addition request includes a service identifier for identifying the service flow to be communicated by the terminal 3 and the service priority requested by the communication application.
  • the requested service is transmitted to the base station as a message using the extra subchannel (ESCH).
  • ESCH extra subchannel
  • the communication control means 2-1 of the base station 2 that has received the service flow addition request transmits, for the service flow requested by the terminal 3, the communication data corresponding to the type of the service.
  • a queue (transmission queue 1) is assigned, and the data transmission frequency is controlled so as to satisfy the service priority required for voice communication that is the type of service concerned.
  • the transmission means 2-2 of the base station 2 transmits a service flow addition confirmation to the terminal, notifying that the base station is ready to exchange data.
  • the terminal 3 that has received the service flow addition confirmation by the receiving unit 3-2 transmits a radio band request to the base station side by the transmitting unit 3-1.
  • the communication control means 2-1 of the base station 2 that has received the wireless bandwidth request secures a wireless bandwidth for the service.
  • the transmission means 2-2 notifies the terminal of the position of the subchannel used for communication by MAP and starts voice communication (communication).
  • the data receiving side identifies the communication application in which the arrived data is to be received by the service identifier included in the received data.
  • the communication control means 2-1 assigns the service priority assigned to the e-mail service, which is the type of the service, as the service priority assigned to the transmission queue.
  • a transmission queue (transmission queue 2) different from that notified in (4) is allocated, and the frequency of data transmission is controlled so that the service priority required for the e-mail service is satisfied.
  • the anchor subchannel changes the allocation of the V and extra subchannels for data transmission for each service according to the service priority.
  • the base station 2 and the terminal 3 are connected by one radio link, and data assigned with different service identifiers is passed through the base station 2 and the terminal 3, and one radio link is connected by a plurality of service flows. Multi-service is realized by sharing.
  • FIG. 4 is a diagram showing the structure of the MAC frame in the present embodiment.
  • the communication system according to the present embodiment is characterized in that the CD field for identifying control information and data in the MAC header part is extended to a 3-bit area (Bitl, Bit2, Bit3).
  • the value of the CD field (Bitl, Bit2, Bit3) force ⁇ , 0, 0) indicates that the content of the MAC payload is MAC control data. In other cases, that is, (0, 0). , 1) to (; 1, 1, 1), this value indicates a service identifier (S1 to S7) used by the user.
  • FIG. 5 is a table showing an example of a correspondence relationship between communication identifiers different from service identifiers and weights assigned to service priorities. As shown in FIG. 5, priorities are assigned to the service priorities Priority 1 to Priority 5. In other words, the service priority is determined according to the service identifier.
  • the bandwidth required for service S1 is reserved for data transmission of service S1.
  • the band reserved for service S1 and the band reserved for service S5 The ratio is the ratio of the weights assigned to each priority.
  • the ratio of the weights of S1 and S5 is 10: 2
  • the bandwidth allocation of S1 and S5 shares the reserved bandwidth at a ratio of 10: 2.

Landscapes

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

Abstract

Selon l'invention, dans un multi-service dans lequel une liaison radio est partagée par plusieurs services, une file d'attente de transmission est attribuée à chacun des services de façon qu'un flux dans une liaison radio possède plusieurs priorités de services. Un système de communication (1) qui exécute des communications en connectant une station de base (2) à un terminal (3) au moyen d'une seule liaison radio comprend un moyen de commande de communications (2-1) qui exécute plusieurs types différents de communications au moyen d'une seule liaison radio.
PCT/JP2007/073065 2006-11-29 2007-11-29 Système de communications, station de base, terminal, et procédé de communications Ceased WO2008069094A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2006-322543 2006-11-29
JP2006322543A JP2008141245A (ja) 2006-11-29 2006-11-29 通信システム、基地局、端末及び通信方法

Publications (1)

Publication Number Publication Date
WO2008069094A1 true WO2008069094A1 (fr) 2008-06-12

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WO (1) WO2008069094A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016076941A (ja) * 2015-11-11 2016-05-12 ▲ホア▼▲ウェイ▼技術有限公司Ｈｕａｗｅｉ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ｃｏ．，Ｌｔｄ． サービス品質を制御するための方法、デバイスおよびシステム
US9775166B2 (en) 2012-01-20 2017-09-26 Huawei Technologies Co., Ltd. Method, device, and system for controlling quality of service

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000224231A (ja) * 1999-02-02 2000-08-11 Hitachi Ltd 移動通信システム及びパケットデータ送信方法
JP2003229894A (ja) * 2002-01-31 2003-08-15 Ntt Docomo Inc 基地局、制御装置、通信システム及び通信方法
JP2006054860A (ja) * 2004-07-14 2006-02-23 Matsushita Electric Ind Co Ltd 通信端末装置及び無線通信方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000224231A (ja) * 1999-02-02 2000-08-11 Hitachi Ltd 移動通信システム及びパケットデータ送信方法
JP2003229894A (ja) * 2002-01-31 2003-08-15 Ntt Docomo Inc 基地局、制御装置、通信システム及び通信方法
JP2006054860A (ja) * 2004-07-14 2006-02-23 Matsushita Electric Ind Co Ltd 通信端末装置及び無線通信方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9775166B2 (en) 2012-01-20 2017-09-26 Huawei Technologies Co., Ltd. Method, device, and system for controlling quality of service
JP2016076941A (ja) * 2015-11-11 2016-05-12 ▲ホア▼▲ウェイ▼技術有限公司Ｈｕａｗｅｉ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ｃｏ．，Ｌｔｄ． サービス品質を制御するための方法、デバイスおよびシステム

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