WO2014024727A1 - Mobile station and wireless base station - Google Patents

Mobile station and wireless base station Download PDF

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Publication number
WO2014024727A1
WO2014024727A1 PCT/JP2013/070559 JP2013070559W WO2014024727A1 WO 2014024727 A1 WO2014024727 A1 WO 2014024727A1 JP 2013070559 W JP2013070559 W JP 2013070559W WO 2014024727 A1 WO2014024727 A1 WO 2014024727A1
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Prior art keywords
window size
random access
response window
mobile station
base station
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PCT/JP2013/070559
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French (fr)
Japanese (ja)
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徹 内野
耕平 清嶋
貴啓 瀧口
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株式会社エヌ・ティ・ティ・ドコモ
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Publication of WO2014024727A1 publication Critical patent/WO2014024727A1/en

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    • 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
    • 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), DMT
    • H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access, e.g. scheduled or random access
    • H04W74/08—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]
    • H04W74/0833—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using a random access procedure

Definitions

  • the present invention relates to a mobile station and a radio base station.
  • the LTE (Long Term Evolution) method and the LTE-Advanced method are configured to activate “RA (Random Access) procedure” in order to synchronize the timing between the mobile station UE and the radio base station eNB. .
  • Non-contention RA procedure which is one of the “RA procedure” will be described.
  • the radio base station eNB instructs the mobile station UE to perform “RA procedure” using “PDCCH (Physical Downlink Control Channel) order”.
  • PDCCH Physical Downlink Control Channel
  • the mobile station UE transmits “RA preamble” using the allocated resource for RACH (Random Access Channel).
  • the mobile station UE attempts to receive “RA response” from the radio base station eNB for a period specified by “RA response window”.
  • the mobile station UE when receiving the “RA response”, the mobile station UE applies the “TA (Timing Advance) command” stored in the “RA response” and performs the “UL grant” reception process.
  • TA Timing Advance
  • the mobile station UE performs transmission on PUSCH (Physical Uplink Shared Channel) using “UL grant” received in STEP 4.
  • PUSCH Physical Uplink Shared Channel
  • the Pcell (Primary Cell, primary cell) serving as a serving cell in a PCC (Primary Component Carrier, primary carrier) and the Scell (cell Secondary, Cell Cell serving as a secondary cell) are provided.
  • PCC Primary Component Carrier, primary carrier
  • Scell Cell Secondary, Cell Cell serving as a secondary cell
  • CA Carrier Aggregation, Carrier Aggregation
  • the mobile station UE is configured to perform communication using only the Pcell, and to add a Scell as necessary.
  • radio characteristics differ from band to band. Therefore, it is necessary to synchronize for each carrier of each band, that is, it is necessary to perform “RA procedure”.
  • the radio base station eNB is configured to instruct the Scell to start up “Non-contention RA procedure” via the PDCCH.
  • RA response window size for receiving such “RA response” is not defined as to whether Pcell or Scell should be used.
  • An object of the present invention is to provide a mobile station and a radio base station that can be set to
  • a first feature of the present invention is a mobile station configured to be able to perform carrier aggregation with a radio base station using a primary cell and a secondary cell, the random access preamble in the secondary cell.
  • a control unit configured to attempt to receive a random access response in the primary cell until the period defined by the random access response window size expires after the transmission of In response to an instruction from the radio base station, it is determined whether to use the random access response window size for the primary cell or the random access response window size for the secondary cell as the random access response window size.
  • a second feature of the present invention is a radio base station configured to perform carrier aggregation with a mobile station using a primary cell and a secondary cell, wherein the mobile station If it is configured to attempt to receive a random access response in the primary cell from the transmission of the random access preamble in the cell until the period defined by the random access response window size expires,
  • the random access response window size is configured to instruct which of the random access response window size for the primary cell and the random access response window size for the secondary cell should be used.
  • a third feature of the present invention is a mobile station configured to be able to perform carrier aggregation with a radio base station using a primary cell and a secondary cell, the random access preamble in the secondary cell.
  • a control unit configured to attempt to receive a random access response in the primary cell until the period defined by the random access response window size expires after the transmission of The gist is that the random access response window size associated with the random access resource instructed by the radio base station is used as the random access response window size.
  • a fourth feature of the present invention is a radio base station configured to be able to perform carrier aggregation with a mobile station using a primary cell and a secondary cell, wherein the mobile station If it is configured to attempt to receive a random access response in the primary cell from the transmission of the random access preamble in the cell until the period defined by the random access response window size expires,
  • the gist of the present invention is that it is configured to indicate a resource for random access associated with the random access response window size.
  • FIG. 1 is an overall configuration diagram of a mobile communication system according to a first embodiment of the present invention.
  • FIG. 2 is a functional block diagram of the mobile station according to the first embodiment of the present invention.
  • FIG. 3 is a sequence diagram when Pcell's “RA response window” is used in the mobile communication system according to the first embodiment of the present invention.
  • FIG. 4 is a sequence diagram when Scell's “RA response window” is used in the mobile communication system according to the first embodiment of the present invention.
  • FIG. 5 is a flowchart showing the operation of the mobile station according to the first embodiment of the present invention.
  • FIG. 6 is a diagram for explaining the prior art.
  • FIG. 7 is a diagram for explaining the prior art.
  • Mobile communication system according to the first embodiment of the present invention A mobile communication system according to a first embodiment of the present invention will be described with reference to FIG. 1 to FIG.
  • the mobile communication system supports the LTE-Advanced scheme, and can perform CA, that is, “Inter-band CA” using Pcell (f1) and Scell (f2). It is configured.
  • the mobile station UE includes a receiving unit 11, a control unit 12, an RA response window size management unit 13, and a transmission unit 14.
  • the reception unit 11 is configured to receive various signals from the radio base station eNB, and the transmission unit 14 is configured to transmit various signals to the radio base station eNB.
  • the RA response window size management unit 13 is configured to manage “RA response window size” for Pcells and Scells.
  • the reception unit 11 is configured to acquire “RA response window size” for the Pcell and each Scell by individual signaling from the radio base station eNB, and the RA response window size management unit 13 includes the reception unit. 11 is configured to manage “RA response window size” for each Pcell and each Scell.
  • the receiving unit 11 may be configured to acquire the “RA response window size” for the Scell when the mobile station UE adds the Scell.
  • the receiving unit 11 may be configured to acquire the “RA response window size” in an RRC (Radio Resource Control) layer, or may be configured to acquire a PDCP (Packet Data Convergence Protocol) layer or an RLC (Radio Link Cycle). ) Layer, MAC (Media Access Control) layer, or physical layer (PDCCH order), the “RA response window size” may be acquired.
  • RRC Radio Resource Control
  • PDCP Packet Data Convergence Protocol
  • RLC Radio Link Cycle
  • MAC Media Access Control
  • PDCCH order physical layer
  • the control unit 12 transmits the “RA preamble” in the Scell through the transmission unit 14 until the period specified by the “RA response window size” expires in the Pcell through the reception unit 11. It is configured to attempt to receive “response”.
  • control unit 12 uses either “RA response window size” for Pcell or “RA response window size” for Scell as “RA response window size” in accordance with an instruction from the radio base station eNB. It is configured to determine what should be done.
  • the radio base station eNB should use “RA response window size” for Pcell or “RA response window size” for Scell as “RA response window size” for the mobile station UE. Configured to direct.
  • the radio base station eNB may be configured to perform such an instruction in the RRC layer, or configured to perform such an instruction in the PDCP layer, the RLC layer, the MAC layer, or the physical layer (PDCCH order). May be.
  • the radio base station eNB may be configured to explicitly issue such an instruction.
  • the radio base station eNB implicitly makes such an instruction in association with “RA preamble” or the like. It may be configured as follows.
  • the radio base station eNB is configured to instruct the mobile station UE in advance regarding such association.
  • the “RA response window size” used by the mobile station UE in the “RA procedure” in Scell can be flexibly changed according to the network conditions (for example, the degree of network congestion and the priority of the mobile station UE). Can do.
  • RA response window size used by the mobile station UE in the “RA procedure” in the Scell, that is, “P response for Pcell” If “RA response window size” is used, flexible scheduling can be realized.
  • RA response window size is set as the “RA response window size” used by the mobile station UE in the “RA procedure” in the Scell, that is, the “RA response window size” is set. If “response window size” is used, the retransmission interval of “RA preamble” can be shortened. For example, when “RA preamble” is lost over the air, retransmission of “RA preamble” may be performed early. It is possible to transmit and receive in Scell at an early stage.
  • the mobile station UE transmits “RA preamble” in the Scell.
  • step S102 the mobile station UE determines whether or not it is instructed to use “RA response window size” for Pcell as “RA response window size” used by the mobile station UE in “RA procedure” in Scell. To do.
  • step S103 If “Yes”, the operation proceeds to step S103, and if “No”, the operation proceeds to step S1043.
  • step S103 the mobile station UE tries to receive “RA response” in the Pcell until the period specified by the “RA response window size” for Pcell expires.
  • step S104 the mobile station UE tries to receive “RA response” in the Pcell until the period specified by the “RA response window size” for Scell expires.
  • the control unit 12 of the mobile station UE uses “RA response window size” associated with the RA resource instructed from the radio base station eNB as “RA response window size”. It may be configured.
  • the radio base station eNB may be configured to instruct the mobile station UE about the RA resource associated with the “RA response window size”.
  • a first feature of the present embodiment is that the mobile station is configured to be able to perform CA (carrier aggregation) with a radio base station eNB using a Pcell (primary cell) and a Scell (secondary cell).
  • CA carrier aggregation
  • Pcell primary cell
  • Scell secondary cell
  • the Pcell “RA response Control unit 12 configured to try to receive “random access response”
  • the control unit 12 sets Pce as“ RA response window size ”. It is summarized as being configured to determine the "RA REPONSE window size” and should be used either "RA REPONSE window size” for Scell for l.
  • a second feature of the present embodiment is a radio base station eNB configured to be able to perform CA with the Pcell and Scell with the mobile station UE, and the mobile station UE When the mobile station UE is configured to try to receive “RA response” in the Pcell until the period specified by “RA response window size” expires after transmitting “RA preamble”,
  • the gist is that it is configured to instruct whether to use "RA response window size” for Pcell or "RA response window size” for Scell as "RA response window size"
  • a third feature of the present embodiment is a mobile station UE configured to be able to perform CA with a radio base station eNB using a Pcell and a Scell.
  • RA preamble is set.
  • the Pcell includes a control unit 12 configured to attempt to receive “RA response”.
  • the gist is that “RA response window size” associated with the RA resource instructed from the radio base station eNB is used as “RA response window size”.
  • a fourth feature of the present embodiment is a radio base station eNB configured to be able to perform CA with a Pcell and Scell with a mobile station UE, and the mobile station UE is in Scell If it is configured to try to receive “RA response” in the Pcell from the time when “RA preamble” is transmitted until the period specified by “RA response window size” expires, the mobile station UE The gist is that it is configured to indicate an RA resource associated with "RA response window size".
  • the operations of the mobile station UE and the radio base station eNB described above may be implemented by hardware, may be implemented by a software module executed by a processor, or may be implemented by a combination of both. .
  • the software modules include RAM (Random Access Memory), flash memory, ROM (Read Only Memory), EPROM (Erasable Programmable ROM), EEPROM (Electronically Erasable and Programmable, Removable ROM, Hard Disk, and Removable ROM).
  • RAM Random Access Memory
  • flash memory ROM (Read Only Memory)
  • EPROM Erasable Programmable ROM
  • EEPROM Electrically Erasable and Programmable, Removable ROM, Hard Disk, and Removable ROM.
  • it may be provided in a storage medium of an arbitrary format such as a CD-ROM.
  • the storage medium is connected to the processor so that the processor can read and write information from and to the storage medium. Further, such a storage medium may be integrated in the processor. Such a storage medium and processor may be provided in the ASIC. Such an ASIC may be provided in the mobile station UE or the radio base station eNB. Further, the storage medium and the processor may be provided as a discrete component in the mobile station UE or the radio base station eNB.
  • RA response window size for receiving such “RA response” can be flexibly set.
  • Mobile stations and radio base stations can be provided.
  • eNB radio base station 11 ... receiving unit 12 ... control unit 13 ... RA response window size management unit 14 ... transmitting unit

Abstract

In order to flexibly set an "RA response window size" for receiving "RA responses," when using an Scell to perform a "Non-contention RA procedures," this mobile station (UE) comprises a control unit (12) configured so as to attempt reception of "RA responses" in a Pcell, from when an "RA preamble" is sent in an Scell to when a period prescribed by the "RA response window size" has ended. The control unit (12) determines which is to be used as the "RA response window size," out of the "RA response window size" for the Pcell and the "RA response window size" for the Scell, in accordance with an instruction from a wireless base station (eNB).

Description

移動局及び無線基地局Mobile station and radio base station
　本発明は、移動局及び無線基地局に関する。 The present invention relates to a mobile station and a radio base station.
　ＬＴＥ（Ｌｏｎｇ　Ｔｅｒｍ　Ｅｖｏｌｕｔｉｏｎ）方式及びＬＴＥ-Ａｄｖａｎｃｅｄ方式では、移動局ＵＥと無線基地局ｅＮＢとの間におけるタイミングを同期させるために、「ＲＡ（Ｒａｎｄｏｍ　Ａｃｃｅｓｓ）　ｐｒｏｃｅｄｕｒｅ」を起動するように構成されている。 The LTE (Long Term Evolution) method and the LTE-Advanced method are configured to activate “RA (Random Access) procedure” in order to synchronize the timing between the mobile station UE and the radio base station eNB. .
　ここで、図６を参照して、かかる「ＲＡ　ｐｒｏｃｅｄｕｒｅ」のうちの１つである「Ｎｏｎ-ｃｏｎｔｅｎｔｉｏｎ　ＲＡ　ｐｒｏｃｅｄｕｒｅ」の動作について説明する。 Here, with reference to FIG. 6, the operation of “Non-contention RA procedure” which is one of the “RA procedure” will be described.
　図６に示すように、ＳＴＥＰ１において、無線基地局ｅＮＢは、移動局ＵＥに対して、「ＰＤＣＣＨ（Ｐｈｙｓｉｃａｌ　Ｄｏｗｎｌｉｎｋ　Ｃｏｎｔｒｏｌ　Ｃｈａｎｎｅｌ）　ｏｒｄｅｒ」を用いて「ＲＡ　ｐｒｏｃｅｄｕｒｅ」を行うように指示する。 As shown in FIG. 6, in STEP 1, the radio base station eNB instructs the mobile station UE to perform “RA procedure” using “PDCCH (Physical Downlink Control Channel) order”.
　ＳＴＥＰ２において、移動局ＵＥは、割り当てられているＲＡＣＨ（Ｒａｎｄｏｍ　Ａｃｃｅｓｓ　Ｃｈａｎｎｅｌ）用リソースで、「ＲＡ　ｐｒｅａｍｂｌｅ」を送信する。 In STEP 2, the mobile station UE transmits “RA preamble” using the allocated resource for RACH (Random Access Channel).
　ＳＴＥＰ３において、移動局ＵＥは、「ＲＡ　ｒｅｓｐｏｎｓｅ　ｗｉｎｄｏｗ」によって規定される期間、無線基地局ｅＮＢからの「ＲＡ　ｒｅｓｐｏｎｓｅ」の受信を試みる。 In STEP 3, the mobile station UE attempts to receive “RA response” from the radio base station eNB for a period specified by “RA response window”.
　ＳＴＥＰ４において、移動局ＵＥは、「ＲＡ　ｒｅｓｐｏｎｓｅ」を受信した場合、「ＲＡ　ｒｅｓｐｏｎｓｅ」内に格納されている「ＴＡ（Ｔｉｍｉｎｇ　Ａｄｖａｎｃｅ）　ｃｏｍｍａｎｄ」を適用して、「ＵＬ　ｇｒａｎｔ」の受信処理を行う。 In STEP4, when receiving the “RA response”, the mobile station UE applies the “TA (Timing Advance) command” stored in the “RA response” and performs the “UL grant” reception process.
　ＳＴＥＰ５において、移動局ＵＥは、ＳＴＥＰ４で受信した「ＵＬ　ｇｒａｎｔ」を用いて、ＰＵＳＣＨ（Ｐｈｙｓｉｃａｌ　Ｕｐｌｉｎｋ　Ｓｈａｒｅｄ　Ｃｈａｎｎｅｌ）における送信を行う。 In STEP 5, the mobile station UE performs transmission on PUSCH (Physical Uplink Shared Channel) using “UL grant” received in STEP 4.
　また、ＬＴＥ-Ａｄｖａｎｃｅｄ方式では、ＰＣＣ（Ｐｒｉｍａｒｙ　Ｃｏｍｐｏｎｅｎｔ　Ｃａｒｒｉｅｒ、プライマリキャリア）におけるサービングセルであるＰｃｅｌｌ（Ｐｒｉｍａｒｙ　Ｃｅｌｌ、プライマリセル）及びＳＣＣ（Ｓｅｃｏｎｄａｒｙ　Ｃｏｍｐｏｎｅｎｔ　Ｃａｒｒｉｅｒ、セカンダリキャリア）におけるサービングセルであるＳｃｅｌｌ（Ｓｅｃｏｎｄａｒｙ　Ｃｅｌｌ、セカンダリセル）を用いて、ＣＡ（Ｃａｒｒｉｅｒ　Ａｇｇｒｅｇａｔｉｏｎ、キャリアアグリゲーション）を行うことができる。 Further, in the LTE-Advanced scheme, the Pcell (Primary Cell, primary cell) serving as a serving cell in a PCC (Primary Component Carrier, primary carrier) and the Scell (cell Secondary, Cell Cell serving as a secondary cell) are provided. ) Can be used to perform CA (Carrier Aggregation, Carrier Aggregation).
　ここで、移動局ＵＥは、第１に、Ｐｃｅｌｌのみで通信を行い、必要に応じて、Ｓｃｅｌｌを追加することができるように構成されている。 Here, first, the mobile station UE is configured to perform communication using only the Pcell, and to add a Scell as necessary.
　特に、図７に示すように、異なるバンドを用いて「ＵＬ　ＣＡ」を行う場合（すなわち、「Ｉｎｔｅｒ-ｂａｎｄ　ＣＡ」を行う場合）、バンド毎に無線特性（遅延特性や減衰特性）が異なるため、各バンドのキャリア毎に同期を取る必要がある、すなわち、「ＲＡ　ｐｒｏｃｅｄｕｒｅ」を実施する必要がある。 In particular, as shown in FIG. 7, when “UL CA” is performed using different bands (that is, when “Inter-band CA” is performed), radio characteristics (delay characteristics and attenuation characteristics) differ from band to band. Therefore, it is necessary to synchronize for each carrier of each band, that is, it is necessary to perform “RA procedure”.
　かかる場合、無線基地局ｅＮＢは、Ｓｃｅｌｌに対しても、ＰＤＣＣＨを介して「Ｎｏｎ-ｃｏｎｔｅｎｔｉｏｎ　ＲＡ　ｐｒｏｃｅｄｕｒｅ」の起動を指示するように構成されている。 In such a case, the radio base station eNB is configured to instruct the Scell to start up “Non-contention RA procedure” via the PDCCH.
　ＬＴＥ規格において、「Ｎｏｎ-ｃｏｎｔｅｎｔｉｏｎ　ＲＡ　ｐｒｏｃｅｄｕｒｅ」が、Ｓｃｅｌｌで行われる場合、移動局ＵＥが、Ｐｃｅｌｌにおいて「ＲＡ　ｒｅｓｐｏｎｓｅ」を受信することが合意されている。 In the LTE standard, when “Non-contention RA procedure” is performed in Scell, it is agreed that the mobile station UE receives “RA response” in Pcell.
　しかしながら、ＬＴＥ規格では、かかる「ＲＡ　ｒｅｓｐｏｎｓｅ」を受けるための「ＲＡ　ｒｅｓｐｏｎｓｅ　ｗｉｎｄｏｗ　ｓｉｚｅ」について、Ｐｃｅｌｌ用或いはＳｃｅｌｌ用のどちらを用いるべきかについて規定されていないという問題点があった。 However, in the LTE standard, there is a problem that “RA response window size” for receiving such “RA response” is not defined as to whether Pcell or Scell should be used.
　そこで、本発明は、上述の課題に鑑みてなされたものであり、「Ｎｏｎ-ｃｏｎｔｅｎｔｉｏｎ　ＲＡ　ｐｒｏｃｅｄｕｒｅ」が、Ｓｃｅｌｌで行われる場合、かかる「ＲＡ　ｒｅｓｐｏｎｓｅ」を受けるための「ＲＡ　ｒｅｓｐｏｎｓｅ　ｗｉｎｄｏｗ　ｓｉｚｅ」を柔軟に設定することができる移動局及び無線基地局を提供することを目的とする。 Therefore, the present invention has been made in view of the above-described problems. When “Non-contention RA procedure” is performed in Scell, “RA response window size” for receiving such “RA response” is flexible. An object of the present invention is to provide a mobile station and a radio base station that can be set to
　本発明の第１の特徴は、無線基地局との間でプライマリセル及びセカンダリセルを用いてキャリアアグリゲーションを行うことができるように構成されている移動局であって、前記セカンダリセルにおいてランダムアクセスプリアンブルを送信してからランダムアクセス応答ウィンドウサイズによって規定される期間が満了するまで、前記プライマリセルにおいてランダムアクセス応答の受信を試みるように構成されている制御部を具備しており、前記制御部は、前記無線基地局からの指示に応じて、前記ランダムアクセス応答ウィンドウサイズとして、前記プライマリセル用のランダムアクセス応答ウィンドウサイズ及び前記セカンダリセル用のランダムアクセス応答ウィンドウサイズのどちらを用いるべきかについて決定するように構成されていることを要旨とする。 A first feature of the present invention is a mobile station configured to be able to perform carrier aggregation with a radio base station using a primary cell and a secondary cell, the random access preamble in the secondary cell. A control unit configured to attempt to receive a random access response in the primary cell until the period defined by the random access response window size expires after the transmission of In response to an instruction from the radio base station, it is determined whether to use the random access response window size for the primary cell or the random access response window size for the secondary cell as the random access response window size. Ni It is summarized as being.
　本発明の第２の特徴は、移動局との間でプライマリセル及びセカンダリセルを用いてキャリアアグリゲーションを行うことができるように構成されている無線基地局であって、前記移動局が、前記セカンダリセルにおいてランダムアクセスプリアンブルを送信してからランダムアクセス応答ウィンドウサイズによって規定される期間が満了するまで、前記プライマリセルにおいてランダムアクセス応答の受信を試みるように構成されている場合、該移動局に対して、該ランダムアクセス応答ウィンドウサイズとして、前記プライマリセル用のランダムアクセス応答ウィンドウサイズ及び前記セカンダリセル用のランダムアクセス応答ウィンドウサイズのどちらを用いるべきかについて指示するように構成されていることを要旨とする。 A second feature of the present invention is a radio base station configured to perform carrier aggregation with a mobile station using a primary cell and a secondary cell, wherein the mobile station If it is configured to attempt to receive a random access response in the primary cell from the transmission of the random access preamble in the cell until the period defined by the random access response window size expires, The random access response window size is configured to instruct which of the random access response window size for the primary cell and the random access response window size for the secondary cell should be used. .
　本発明の第３の特徴は、無線基地局との間でプライマリセル及びセカンダリセルを用いてキャリアアグリゲーションを行うことができるように構成されている移動局であって、前記セカンダリセルにおいてランダムアクセスプリアンブルを送信してからランダムアクセス応答ウィンドウサイズによって規定される期間が満了するまで、前記プライマリセルにおいてランダムアクセス応答の受信を試みるように構成されている制御部を具備しており、前記制御部は、前記ランダムアクセス応答ウィンドウサイズとして、前記無線基地局から指示されたランダムアクセス用リソースに関連付けられているランダムアクセス応答ウィンドウサイズを用いるように構成されていることを要旨とする。 A third feature of the present invention is a mobile station configured to be able to perform carrier aggregation with a radio base station using a primary cell and a secondary cell, the random access preamble in the secondary cell. A control unit configured to attempt to receive a random access response in the primary cell until the period defined by the random access response window size expires after the transmission of The gist is that the random access response window size associated with the random access resource instructed by the radio base station is used as the random access response window size.
　本発明の第４の特徴は、移動局との間でプライマリセル及びセカンダリセルを用いてキャリアアグリゲーションを行うことができるように構成されている無線基地局であって、前記移動局が、前記セカンダリセルにおいてランダムアクセスプリアンブルを送信してからランダムアクセス応答ウィンドウサイズによって規定される期間が満了するまで、前記プライマリセルにおいてランダムアクセス応答の受信を試みるように構成されている場合、該移動局に対して、ランダムアクセス応答ウィンドウサイズに関連付けられているランダムアクセス用リソースを指示するように構成されていることを要旨とする。 A fourth feature of the present invention is a radio base station configured to be able to perform carrier aggregation with a mobile station using a primary cell and a secondary cell, wherein the mobile station If it is configured to attempt to receive a random access response in the primary cell from the transmission of the random access preamble in the cell until the period defined by the random access response window size expires, The gist of the present invention is that it is configured to indicate a resource for random access associated with the random access response window size.
図１は、本発明の第１の実施形態に係る移動通信システムの全体構成図である。FIG. 1 is an overall configuration diagram of a mobile communication system according to a first embodiment of the present invention. 図２は、本発明の第１の実施形態に係る移動局の機能ブロック図である。FIG. 2 is a functional block diagram of the mobile station according to the first embodiment of the present invention. 図３は、本発明の第１の実施形態に係る移動通信システムにおいてＰｃｅｌｌの「ＲＡ　ｒｅｓｐｏｎｓｅ　ｗｉｎｄｏｗ」が用いられる場合のシーケンス図である。FIG. 3 is a sequence diagram when Pcell's “RA response window” is used in the mobile communication system according to the first embodiment of the present invention. 図４は、本発明の第１の実施形態に係る移動通信システムにおいてＳｃｅｌｌの「ＲＡ　ｒｅｓｐｏｎｓｅ　ｗｉｎｄｏｗ」が用いられる場合のシーケンス図である。FIG. 4 is a sequence diagram when Scell's “RA response window” is used in the mobile communication system according to the first embodiment of the present invention. 図５は、本発明の第１の実施形態に係る移動局の動作を示すフローチャートである。FIG. 5 is a flowchart showing the operation of the mobile station according to the first embodiment of the present invention. 図６は、従来技術を説明するための図である。FIG. 6 is a diagram for explaining the prior art. 図７は、従来技術を説明するための図である。FIG. 7 is a diagram for explaining the prior art.
（本発明の第１の実施形態に係る移動通信システム）
　図１乃至図５を参照して、本発明の第１の実施形態に係る移動通信システムについて説明する。 (Mobile communication system according to the first embodiment of the present invention)
A mobile communication system according to a first embodiment of the present invention will be described with reference to FIG. 1 to FIG.
　本実施形態に係る移動通信システムは、ＬＴＥ-Ａｄｖａｎｃｅｄ方式をサポートするものであって、Ｐｃｅｌｌ（ｆ１）及びＳｃｅｌｌ（ｆ２）を用いてＣＡ、すなわち、「Ｉｎｔｅｒ-ｂａｎｄ　ＣＡ」を行うことができるように構成されている。 The mobile communication system according to the present embodiment supports the LTE-Advanced scheme, and can perform CA, that is, “Inter-band CA” using Pcell (f1) and Scell (f2). It is configured.
　図２に示すように、本実施形態に係る移動局ＵＥは、受信部１１と、制御部１２と、ＲＡ　ｒｅｓｐｏｎｓｅ　ｗｉｎｄｏｗ　ｓｉｚｅ管理部１３と、送信部１４とを具備している。 As shown in FIG. 2, the mobile station UE according to this embodiment includes a receiving unit 11, a control unit 12, an RA response window size management unit 13, and a transmission unit 14.
　受信部１１は、無線基地局ｅＮＢから各種信号を受信するように構成されており、送信部１４は、無線基地局ｅＮＢに対して各種信号を送信するように構成されている。 The reception unit 11 is configured to receive various signals from the radio base station eNB, and the transmission unit 14 is configured to transmit various signals to the radio base station eNB.
　ＲＡ　ｒｅｓｐｏｎｓｅ　ｗｉｎｄｏｗ　ｓｉｚｅ管理部１３は、Ｐｃｅｌｌや各Ｓｃｅｌｌ用の「ＲＡ　ｒｅｓｐｏｎｓｅ　ｗｉｎｄｏｗ　ｓｉｚｅ」を管理するように構成されている。 The RA response window size management unit 13 is configured to manage “RA response window size” for Pcells and Scells.
　例えば、受信部１１は、無線基地局ｅＮＢからの個別シグナリングによって、Ｐｃｅｌｌや各Ｓｃｅｌｌ用の「ＲＡ　ｒｅｓｐｏｎｓｅ　ｗｉｎｄｏｗ　ｓｉｚｅ」を取得するように構成されており、ＲＡ　ｒｅｓｐｏｎｓｅ　ｗｉｎｄｏｗ　ｓｉｚｅ管理部１３は、受信部１１によって取得されたＰｃｅｌｌや各Ｓｃｅｌｌ用の「ＲＡ　ｒｅｓｐｏｎｓｅ　ｗｉｎｄｏｗ　ｓｉｚｅ」を管理するように構成されている。 For example, the reception unit 11 is configured to acquire “RA response window size” for the Pcell and each Scell by individual signaling from the radio base station eNB, and the RA response window size management unit 13 includes the reception unit. 11 is configured to manage “RA response window size” for each Pcell and each Scell.
　ここで、受信部１１は、移動局ＵＥが、Ｓｃｅｌｌを追加する際に、かかるＳｃｅｌｌ用の「ＲＡ　ｒｅｓｐｏｎｓｅ　ｗｉｎｄｏｗ　ｓｉｚｅ」を取得するように構成されていてもよい。 Here, the receiving unit 11 may be configured to acquire the “RA response window size” for the Scell when the mobile station UE adds the Scell.
　なお、受信部１１は、ＲＲＣ（Ｒａｄｉｏ　Ｒｅｓｏｕｒｃｅ　Ｃｏｎｔｒｏｌ）レイヤにおいて、かかる「ＲＡ　ｒｅｓｐｏｎｓｅ　ｗｉｎｄｏｗ　ｓｉｚｅ」を取得するように構成されていてもよいし、ＰＤＣＰ（Ｐａｃｋｅｔ　Ｄａｔａ　Ｃｏｎｖｅｒｇｅｎｃｅ　Ｐｒｏｔｏｃｏｌ）レイヤやＲＬＣ（Ｒａｄｉｏ　Ｌｉｎｋ　Ｃｏｎｔｒｏｌ）レイヤやＭＡＣ（Ｍｅｄｉａ　Ａｃｃｅｓｓ Ｃｏｎｔｒｏｌ）レイヤや物理レイヤ（ＰＤＣＣＨ　ｏｒｄｅｒ）において、かかる「ＲＡ　ｒｅｓｐｏｎｓｅ　ｗｉｎｄｏｗ　ｓｉｚｅ」を取得するように構成されていてもよい。 The receiving unit 11 may be configured to acquire the “RA response window size” in an RRC (Radio Resource Control) layer, or may be configured to acquire a PDCP (Packet Data Convergence Protocol) layer or an RLC (Radio Link Cycle). ) Layer, MAC (Media Access Control) layer, or physical layer (PDCCH order), the “RA response window size” may be acquired.
　制御部１２は、Ｓｃｅｌｌにおいて、送信部１４を介して「ＲＡ　ｐｒｅａｍｂｌｅ」を送信してから「ＲＡ　ｒｅｐｏｎｓｅ　ｗｉｎｄｏｗ　ｓｉｚｅ」によって規定される期間が満了するまで、Ｐｃｅｌｌにおいて、受信部１１を介して「ＲＡ　ｒｅｐｓｏｎｓｅ」の受信を試みるように構成されている。 The control unit 12 transmits the “RA preamble” in the Scell through the transmission unit 14 until the period specified by the “RA response window size” expires in the Pcell through the reception unit 11. It is configured to attempt to receive “response”.
　ここで、制御部１２は、無線基地局ｅＮＢからの指示に応じて、「ＲＡ　ｒｅｐｏｎｓｅ　ｗｉｎｄｏｗ　ｓｉｚｅ」として、Ｐｃｅｌｌ用の「ＲＡ　ｒｅｐｏｎｓｅ　ｗｉｎｄｏｗ　ｓｉｚｅ」及びＳｃｅｌｌ用の「ＲＡ　ｒｅｐｏｎｓｅ　ｗｉｎｄｏｗ　ｓｉｚｅ」のどちらを用いるべきかについて決定するように構成されている。 Here, the control unit 12 uses either “RA response window size” for Pcell or “RA response window size” for Scell as “RA response window size” in accordance with an instruction from the radio base station eNB. It is configured to determine what should be done.
　ここで、無線基地局ｅＮＢは、移動局ＵＥに対して、「ＲＡ　ｒｅｐｏｎｓｅ　ｗｉｎｄｏｗ　ｓｉｚｅ」として、Ｐｃｅｌｌ用の「ＲＡ　ｒｅｐｏｎｓｅ　ｗｉｎｄｏｗ　ｓｉｚｅ」及びＳｃｅｌｌ用の「ＲＡ　ｒｅｐｏｎｓｅ　ｗｉｎｄｏｗ　ｓｉｚｅ」のどちらを用いるべきかについて指示するように構成されている。 Here, the radio base station eNB should use “RA response window size” for Pcell or “RA response window size” for Scell as “RA response window size” for the mobile station UE. Configured to direct.
　無線基地局ｅＮＢは、ＲＲＣレイヤにおいて、かかる指示を行うように構成されていてもよいし、ＰＤＣＰレイヤやＲＬＣレイヤやＭＡＣレイヤや物理レイヤ（ＰＤＣＣＨ　ｏｒｄｅｒ）において、かかる指示を行うように構成されていてもよい。 The radio base station eNB may be configured to perform such an instruction in the RRC layer, or configured to perform such an instruction in the PDCP layer, the RLC layer, the MAC layer, or the physical layer (PDCCH order). May be.
　また、無線基地局ｅＮＢは、上述のように、明示的に、かかる指示を行うように構成されていてもよいし、例えば、「ＲＡ　ｐｒｅａｍｂｌｅ」等に関連付けて、暗示的に、かかる指示を行うように構成されていてもよい。 Further, as described above, the radio base station eNB may be configured to explicitly issue such an instruction. For example, the radio base station eNB implicitly makes such an instruction in association with “RA preamble” or the like. It may be configured as follows.
　かかる場合、無線基地局ｅＮＢは、かかる関連付けについて、事前に、移動局ＵＥに対して指示しておくように構成されている。 In such a case, the radio base station eNB is configured to instruct the mobile station UE in advance regarding such association.
　かかる構成によれば、ネットワークの状況（例えば、ネットワークの混雑度や移動局ＵＥの優先度）によって、Ｓｃｅｌｌにおける「ＲＡ　ｐｒｏｃｅｄｕｒｅ」で移動局ＵＥが用いる「ＲＡ　ｒｅｓｐｏｎｓｅ　ｗｉｎｄｏｗ　ｓｉｚｅ」を柔軟に変更することができる。 According to this configuration, the “RA response window size” used by the mobile station UE in the “RA procedure” in Scell can be flexibly changed according to the network conditions (for example, the degree of network congestion and the priority of the mobile station UE). Can do.
　ここで、図３に示すように、Ｓｃｅｌｌにおける「ＲＡ　ｐｒｏｃｅｄｕｒｅ」で移動局ＵＥが用いる「ＲＡ　ｒｅｓｐｏｎｓｅ　ｗｉｎｄｏｗ　ｓｉｚｅ」として、比較的長い「ＲＡ　ｒｅｓｐｏｎｓｅ　ｗｉｎｄｏｗ　ｓｉｚｅ」を設定すれば、すなわち、Ｐｃｅｌｌ用の「ＲＡ　ｒｅｐｏｎｓｅ　ｗｉｎｄｏｗ　ｓｉｚｅ」を用いれば、柔軟なスケジューリングを実現することができる。 Here, as shown in FIG. 3, if a relatively long “RA response window size” is set as the “RA response window size” used by the mobile station UE in the “RA procedure” in the Scell, that is, “P response for Pcell” If “RA response window size” is used, flexible scheduling can be realized.
　一方、図４に示すように、Ｓｃｅｌｌにおける「ＲＡ　ｐｒｏｃｅｄｕｒｅ」で移動局ＵＥが用いる「ＲＡ　ｒｅｓｐｏｎｓｅ　ｗｉｎｄｏｗ　ｓｉｚｅ」として、比較的短い「ＲＡ　ｒｅｓｐｏｎｓｅ　ｗｉｎｄｏｗ　ｓｉｚｅ」を設定すれば、すなわち、Ｓｃｅｌｌ用の「ＲＡ　ｒｅｐｏｎｓｅ　ｗｉｎｄｏｗ　ｓｉｚｅ」を用いれば、「ＲＡ　ｐｒｅａｍｂｌｅ」の再送間隔を短くすることができるため、例えば、「ＲＡ　ｐｒｅａｍｂｌｅ」が無線で欠落した場合には、「ＲＡ　ｐｒｅａｍｂｌｅ」の再送を早期に行うことができ、Ｓｃｅｌｌにおける送受信を早期に行うことが可能である。 On the other hand, as shown in FIG. 4, if a relatively short “RA response window size” is set as the “RA response window size” used by the mobile station UE in the “RA procedure” in the Scell, that is, the “RA response window size” is set. If “response window size” is used, the retransmission interval of “RA preamble” can be shortened. For example, when “RA preamble” is lost over the air, retransmission of “RA preamble” may be performed early. It is possible to transmit and receive in Scell at an early stage.
　以下、図５を参照して、本実施形態に係る移動局ＵＥの動作について説明する。 Hereinafter, the operation of the mobile station UE according to the present embodiment will be described with reference to FIG.
　図５に示すように、移動局ＵＥは、Ｓｃｅｌｌにおいて「ＲＡ　ｐｒｅａｍｂｌｅ」を送信する。 As shown in FIG. 5, the mobile station UE transmits “RA preamble” in the Scell.
　ステップＳ１０２において、移動局ＵＥは、Ｓｃｅｌｌにおける「ＲＡ　ｐｒｏｃｅｄｕｒｅ」で移動局ＵＥが用いる「ＲＡ　ｒｅｓｐｏｎｓｅ　ｗｉｎｄｏｗ　ｓｉｚｅ」として、Ｐｃｅｌｌ用の「ＲＡ　ｒｅｐｏｎｓｅ　ｗｉｎｄｏｗ　ｓｉｚｅ」を用いるように指示されているか否かについて判定する。 In step S102, the mobile station UE determines whether or not it is instructed to use “RA response window size” for Pcell as “RA response window size” used by the mobile station UE in “RA procedure” in Scell. To do.
　「Ｙｅｓ」の場合、本動作は、ステップＳ１０３に進み、「Ｎｏ」の場合、本動作は、ステップＳ１０４３に進む。 If “Yes”, the operation proceeds to step S103, and if “No”, the operation proceeds to step S1043.
　ステップＳ１０３において、移動局ＵＥは、Ｐｃｅｌｌにおいて、Ｐｃｅｌｌ用の「ＲＡ　ｒｅｐｏｎｓｅ　ｗｉｎｄｏｗ　ｓｉｚｅ」によって規定される期間が満了するまで、「ＲＡ　ｒｅｐｓｏｎｓｅ」の受信を試みる。 In step S103, the mobile station UE tries to receive “RA response” in the Pcell until the period specified by the “RA response window size” for Pcell expires.
　一方、ステップＳ１０４において、移動局ＵＥは、Ｐｃｅｌｌにおいて、Ｓｃｅｌｌ用の「ＲＡ　ｒｅｐｏｎｓｅ　ｗｉｎｄｏｗ　ｓｉｚｅ」によって規定される期間が満了するまで、「ＲＡ　ｒｅｐｓｏｎｓｅ」の受信を試みる。 On the other hand, in step S104, the mobile station UE tries to receive “RA response” in the Pcell until the period specified by the “RA response window size” for Scell expires.
（変更例１）
　本発明の変更例１において、移動局ＵＥの制御部１２は、「ＲＡ　ｒｅｐｏｎｓｅ　ｗｉｎｄｏｗ　ｓｉｚｅ」として、無線基地局ｅＮＢから指示されたＲＡ用リソースに関連付けられている「ＲＡ　ｒｅｐｏｎｓｅ　ｗｉｎｄｏｗ　ｓｉｚｅ」を用いるように構成されていてもよい。 (Modification 1)
In the first modification of the present invention, the control unit 12 of the mobile station UE uses “RA response window size” associated with the RA resource instructed from the radio base station eNB as “RA response window size”. It may be configured.
　かかる場合、無線基地局ｅＮＢは、移動局ＵＥに対して、「ＲＡ　ｒｅｐｏｎｓｅ　ｗｉｎｄｏｗ　ｓｉｚｅ」に関連付けられているＲＡ用リソースを指示するように構成されていてもよい。 In this case, the radio base station eNB may be configured to instruct the mobile station UE about the RA resource associated with the “RA response window size”.
　以上に述べた本実施形態の特徴は、以下のように表現されていてもよい。 The features of the present embodiment described above may be expressed as follows.
　本実施形態の第１の特徴は、無線基地局ｅＮＢとの間でＰｃｅｌｌ（プライマリセル）及びＳｃｅｌｌ（セカンダリセル）を用いてＣＡ（キャリアアグリゲーション）を行うことができるように構成されている移動局ＵＥであって、Ｓｃｅｌｌにおいて「ＲＡ　ｐｒｅａｍｂｌｅ（ランダムアクセスプリアンブル）」を送信してから「ＲＡ　ｒｅｐｏｎｓｅ　ｗｉｎｄｏｗ　ｓｉｚｅ（ランダムアクセス応答ウィンドウサイズ）」によって規定される期間が満了するまで、Ｐｃｅｌｌにおいて「ＲＡ　ｒｅｐｓｏｎｓｅ（ランダムアクセス応答）」の受信を試みるように構成されている制御部１２を具備しており、制御部１２は、無線基地局ｅＮＢからの指示に応じて、「ＲＡ　ｒｅｐｏｎｓｅ　ｗｉｎｄｏｗ　ｓｉｚｅ」として、Ｐｃｅｌｌ用の「ＲＡ　ｒｅｐｏｎｓｅ　ｗｉｎｄｏｗ　ｓｉｚｅ」及びＳｃｅｌｌ用の「ＲＡ　ｒｅｐｏｎｓｅ　ｗｉｎｄｏｗ　ｓｉｚｅ」のどちらを用いるべきかについて決定するように構成されていることを要旨とする。 A first feature of the present embodiment is that the mobile station is configured to be able to perform CA (carrier aggregation) with a radio base station eNB using a Pcell (primary cell) and a Scell (secondary cell). Until the period specified by the “RA response window size (random access response window size)” has expired after the “RA preamble (random access preamble)” is transmitted in the Scell, the Pcell “RA response ( Control unit 12 configured to try to receive “random access response” ”, and in response to an instruction from the radio base station eNB, the control unit 12 sets Pce as“ RA response window size ”. It is summarized as being configured to determine the "RA REPONSE window size" and should be used either "RA REPONSE window size" for Scell for l.
　本実施形態の第２の特徴は、移動局ＵＥとの間でＰｃｅｌｌ及びＳｃｅｌｌを用いてＣＡを行うことができるように構成されている無線基地局ｅＮＢであって、移動局ＵＥが、Ｓｃｅｌｌにおいて「ＲＡ　ｐｒｅａｍｂｌｅ」を送信してから「ＲＡ　ｒｅｐｏｎｓｅ　ｗｉｎｄｏｗ　ｓｉｚｅ」によって規定される期間が満了するまで、Ｐｃｅｌｌにおいて「ＲＡ　ｒｅｐｓｏｎｓｅ」の受信を試みるように構成されている場合、移動局ＵＥに対して、「ＲＡ　ｒｅｐｏｎｓｅ　ｗｉｎｄｏｗ　ｓｉｚｅ」として、Ｐｃｅｌｌ用の「ＲＡ　ｒｅｐｏｎｓｅ　ｗｉｎｄｏｗ　ｓｉｚｅ」及びＳｃｅｌｌ用の「ＲＡ　ｒｅｐｏｎｓｅ　ｗｉｎｄｏｗ　ｓｉｚｅ」のどちらを用いるべきかについて指示するように構成されていることを要旨とする。 A second feature of the present embodiment is a radio base station eNB configured to be able to perform CA with the Pcell and Scell with the mobile station UE, and the mobile station UE When the mobile station UE is configured to try to receive “RA response” in the Pcell until the period specified by “RA response window size” expires after transmitting “RA preamble”, The gist is that it is configured to instruct whether to use "RA response window size" for Pcell or "RA response window size" for Scell as "RA response window size"
　本実施形態の第３の特徴は、無線基地局ｅＮＢとの間でＰｃｅｌｌ及びＳｃｅｌｌを用いてＣＡを行うことができるように構成されている移動局ＵＥであって、Ｓｃｅｌｌにおいて「ＲＡ　ｐｒｅａｍｂｌｅ」を送信してから「ＲＡ　ｒｅｐｏｎｓｅ　ｗｉｎｄｏｗ　ｓｉｚｅ」によって規定される期間が満了するまで、Ｐｃｅｌｌにおいて「ＲＡ　ｒｅｐｓｏｎｓｅ」の受信を試みるように構成されている制御部１２を具備しており、制御部１２は、「ＲＡ　ｒｅｐｏｎｓｅ　ｗｉｎｄｏｗ　ｓｉｚｅ」として、無線基地局ｅＮＢから指示されたＲＡ用リソースに関連付けられている「ＲＡ　ｒｅｐｏｎｓｅ　ｗｉｎｄｏｗ　ｓｉｚｅ」を用いるように構成されていることを要旨とする。 A third feature of the present embodiment is a mobile station UE configured to be able to perform CA with a radio base station eNB using a Pcell and a Scell. In the Scell, “RA preamble” is set. From the time of transmission until the period specified by “RA response window size” expires, the Pcell includes a control unit 12 configured to attempt to receive “RA response”. The gist is that “RA response window size” associated with the RA resource instructed from the radio base station eNB is used as “RA response window size”.
　本実施形態の第４の特徴は、移動局ＵＥとの間でＰｃｅｌｌ及びＳｃｅｌｌを用いてＣＡを行うことができるように構成されている無線基地局ｅＮＢであって、移動局ＵＥが、Ｓｃｅｌｌにおいて「ＲＡ　ｐｒｅａｍｂｌｅ」を送信してから「ＲＡ　ｒｅｐｏｎｓｅ　ｗｉｎｄｏｗ　ｓｉｚｅ」によって規定される期間が満了するまで、Ｐｃｅｌｌにおいて「ＲＡ　ｒｅｐｓｏｎｓｅ」の受信を試みるように構成されている場合、かかる移動局ＵＥに対して、「ＲＡ　ｒｅｐｏｎｓｅ　ｗｉｎｄｏｗ　ｓｉｚｅ」に関連付けられているＲＡ用リソースを指示するように構成されていることを要旨とする。 A fourth feature of the present embodiment is a radio base station eNB configured to be able to perform CA with a Pcell and Scell with a mobile station UE, and the mobile station UE is in Scell If it is configured to try to receive “RA response” in the Pcell from the time when “RA preamble” is transmitted until the period specified by “RA response window size” expires, the mobile station UE The gist is that it is configured to indicate an RA resource associated with "RA response window size".
　なお、上述の移動局ＵＥや無線基地局ｅＮＢの動作は、ハードウェアによって実施されてもよいし、プロセッサによって実行されるソフトウェアモジュールによって実施されてもよいし、両者の組み合わせによって実施されてもよい。 The operations of the mobile station UE and the radio base station eNB described above may be implemented by hardware, may be implemented by a software module executed by a processor, or may be implemented by a combination of both. .
　ソフトウェアモジュールは、ＲＡＭ（Ｒａｎｄｏｍ　Ａｃｃｅｓｓ　Ｍｅｍｏｒｙ）や、フラッシュメモリや、ＲＯＭ（Ｒｅａｄ　Ｏｎｌｙ　Ｍｅｍｏｒｙ）や、ＥＰＲＯＭ（Ｅｒａｓａｂｌｅ　Ｐｒｏｇｒａｍｍａｂｌｅ　ＲＯＭ）や、ＥＥＰＲＯＭ（Ｅｌｅｃｔｒｏｎｉｃａｌｌｙ　Ｅｒａｓａｂｌｅ　ａｎｄ　Ｐｒｏｇｒａｍｍａｂｌｅ　ＲＯＭ）や、レジスタや、ハードディスクや、リムーバブルディスクや、ＣＤ-ＲＯＭといった任意形式の記憶媒体内に設けられていてもよい。 The software modules include RAM (Random Access Memory), flash memory, ROM (Read Only Memory), EPROM (Erasable Programmable ROM), EEPROM (Electronically Erasable and Programmable, Removable ROM, Hard Disk, and Removable ROM). Alternatively, it may be provided in a storage medium of an arbitrary format such as a CD-ROM.
　かかる記憶媒体は、プロセッサが当該記憶媒体に情報を読み書きできるように、当該プロセッサに接続されている。また、かかる記憶媒体は、プロセッサに集積されていてもよい。また、かかる記憶媒体及びプロセッサは、ＡＳＩＣ内に設けられていてもよい。かかるＡＳＩＣは、移動局ＵＥや無線基地局ｅＮＢ内に設けられていてもよい。また、かかる記憶媒体及びプロセッサは、ディスクリートコンポーネントとして移動局ＵＥや無線基地局ｅＮＢ内に設けられていてもよい。 The storage medium is connected to the processor so that the processor can read and write information from and to the storage medium. Further, such a storage medium may be integrated in the processor. Such a storage medium and processor may be provided in the ASIC. Such an ASIC may be provided in the mobile station UE or the radio base station eNB. Further, the storage medium and the processor may be provided as a discrete component in the mobile station UE or the radio base station eNB.
　以上、上述の実施形態を用いて本発明について詳細に説明したが、当業者にとっては、本発明が本明細書中に説明した実施形態に限定されるものではないということは明らかである。本発明は、請求の範囲の記載により定まる本発明の趣旨及び範囲を逸脱することなく修正及び変更態様として実施することができる。従って、本明細書の記載は、例示説明を目的とするものであり、本発明に対して何ら制限的な意味を有するものではない。 As described above, the present invention has been described in detail using the above-described embodiments. However, it is obvious for those skilled in the art that the present invention is not limited to the embodiments described in the present specification. The present invention can be implemented as modifications and changes without departing from the spirit and scope of the present invention defined by the description of the scope of claims. Therefore, the description of the present specification is for illustrative purposes and does not have any limiting meaning to the present invention.
　なお、日本国特許出願第２０１２－１７４１３７号（２０１２年８月６日出願）の全内容が、参照により、本願明細書に組み込まれている。 Note that the entire contents of Japanese Patent Application No. 2012-174137 (filed on August 6, 2012) are incorporated herein by reference.
　以上説明したように、本発明によれば、「Ｎｏｎ-ｃｏｎｔｅｎｔｉｏｎ　ＲＡ　ｐｒｏｃｅｄｕｒｅ」が、Ｓｃｅｌｌで行われる場合、かかる「ＲＡ　ｒｅｓｐｏｎｓｅ」を受けるための「ＲＡ　ｒｅｓｐｏｎｓｅ　ｗｉｎｄｏｗ　ｓｉｚｅ」を柔軟に設定することができる移動局及び無線基地局を提供することができる。 As described above, according to the present invention, when “Non-contention RA procedure” is performed in Scell, “RA response window size” for receiving such “RA response” can be flexibly set. Mobile stations and radio base stations can be provided.
ｅＮＢ…無線基地局
１１…受信部
１２…制御部
１３…ＲＡ　ｒｅｓｐｏｎｓｅ　ｗｉｎｄｏｗ　ｓｉｚｅ管理部
１４…送信部 eNB ... radio base station 11 ... receiving unit 12 ... control unit 13 ... RA response window size management unit 14 ... transmitting unit

Claims (4)

  1. 　無線基地局との間でプライマリセル及びセカンダリセルを用いてキャリアアグリゲーションを行うことができるように構成されている移動局であって、
    　前記セカンダリセルにおいてランダムアクセスプリアンブルを送信してからランダムアクセス応答ウィンドウサイズによって規定される期間が満了するまで、前記プライマリセルにおいてランダムアクセス応答の受信を試みるように構成されている制御部を具備しており、
    　前記制御部は、前記無線基地局からの指示に応じて、前記ランダムアクセス応答ウィンドウサイズとして、前記プライマリセル用のランダムアクセス応答ウィンドウサイズ及び前記セカンダリセル用のランダムアクセス応答ウィンドウサイズのどちらを用いるべきかについて決定するように構成されていることを特徴とする移動局。     A mobile station configured to be able to perform carrier aggregation with a radio base station using a primary cell and a secondary cell,
    A controller configured to attempt to receive a random access response in the primary cell from the transmission of the random access preamble in the secondary cell until the period specified by the random access response window size expires; And
    In response to an instruction from the radio base station, the control unit should use either the random access response window size for the primary cell or the random access response window size for the secondary cell as the random access response window size. A mobile station characterized in that it is configured to determine whether or not.
  2. 　移動局との間でプライマリセル及びセカンダリセルを用いてキャリアアグリゲーションを行うことができるように構成されている無線基地局であって、
    　前記移動局が、前記セカンダリセルにおいてランダムアクセスプリアンブルを送信してからランダムアクセス応答ウィンドウサイズによって規定される期間が満了するまで、前記プライマリセルにおいてランダムアクセス応答の受信を試みるように構成されている場合、該移動局に対して、該ランダムアクセス応答ウィンドウサイズとして、前記プライマリセル用のランダムアクセス応答ウィンドウサイズ及び前記セカンダリセル用のランダムアクセス応答ウィンドウサイズのどちらを用いるべきかについて指示するように構成されていることを特徴とする無線基地局。     A radio base station configured to perform carrier aggregation using a primary cell and a secondary cell with a mobile station,
    When the mobile station is configured to attempt to receive a random access response in the primary cell from when a random access preamble is transmitted in the secondary cell until a period defined by a random access response window size expires The mobile station is instructed to use the random access response window size for the primary cell or the random access response window size for the secondary cell as the random access response window size. A radio base station characterized by that.
  3. 　無線基地局との間でプライマリセル及びセカンダリセルを用いてキャリアアグリゲーションを行うことができるように構成されている移動局であって、
    　前記セカンダリセルにおいてランダムアクセスプリアンブルを送信してからランダムアクセス応答ウィンドウサイズによって規定される期間が満了するまで、前記プライマリセルにおいてランダムアクセス応答の受信を試みるように構成されている制御部を具備しており、
    　前記制御部は、前記ランダムアクセス応答ウィンドウサイズとして、前記無線基地局から指示されたランダムアクセス用リソースに関連付けられているランダムアクセス応答ウィンドウサイズを用いるように構成されていることを特徴とする移動局。     A mobile station configured to be able to perform carrier aggregation with a radio base station using a primary cell and a secondary cell,
    A controller configured to attempt to receive a random access response in the primary cell from the transmission of the random access preamble in the secondary cell until the period specified by the random access response window size expires; And
    The control unit is configured to use a random access response window size associated with a random access resource instructed from the radio base station as the random access response window size. .
  4. 　移動局との間でプライマリセル及びセカンダリセルを用いてキャリアアグリゲーションを行うことができるように構成されている無線基地局であって、
    　前記移動局が、前記セカンダリセルにおいてランダムアクセスプリアンブルを送信してからランダムアクセス応答ウィンドウサイズによって規定される期間が満了するまで、前記プライマリセルにおいてランダムアクセス応答の受信を試みるように構成されている場合、該移動局に対して、ランダムアクセス応答ウィンドウサイズに関連付けられているランダムアクセス用リソースを指示するように構成されていることを特徴とする無線基地局。     A radio base station configured to perform carrier aggregation using a primary cell and a secondary cell with a mobile station,
    When the mobile station is configured to attempt to receive a random access response in the primary cell from when a random access preamble is transmitted in the secondary cell until a period defined by a random access response window size expires A radio base station configured to instruct a resource for random access associated with a random access response window size to the mobile station.
PCT/JP2013/070559 2012-08-06 2013-07-30 Mobile station and wireless base station WO2014024727A1 (en)

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Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
CATT: "Detail on SCell RACH Configuration", 3GPP TSG RAN WG2 MEETING #78 R2-122175, 21 May 2012 (2012-05-21) *
HUAWEI ET AL.: "RA response window for sTAG", 3GPP TSG-RAN WG2 MEETING #78 R2-122316, 21 May 2012 (2012-05-21) *

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