WO2011043321A1 - 移動通信方法及び無線基地局 - Google Patents
移動通信方法及び無線基地局 Download PDFInfo
- Publication number
- WO2011043321A1 WO2011043321A1 PCT/JP2010/067426 JP2010067426W WO2011043321A1 WO 2011043321 A1 WO2011043321 A1 WO 2011043321A1 JP 2010067426 W JP2010067426 W JP 2010067426W WO 2011043321 A1 WO2011043321 A1 WO 2011043321A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cell
- predetermined
- base station
- sequence
- predetermined period
- Prior art date
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J13/00—Code division multiplex systems
- H04J13/0007—Code type
- H04J13/0055—ZCZ [zero correlation zone]
- H04J13/0059—CAZAC [constant-amplitude and zero auto-correlation]
- H04J13/0062—Zadoff-Chu
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J13/00—Code division multiplex systems
- H04J13/16—Code allocation
- H04J13/22—Allocation of codes with a zero correlation zone
-
- 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
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/004—Synchronisation arrangements compensating for timing error of reception due to propagation delay
- H04W56/0045—Synchronisation arrangements compensating for timing error of reception due to propagation delay compensating for timing error by altering transmission time
Definitions
- the present invention relates to a mobile communication method and a radio base station.
- a random access procedure is used for initial connection.
- a channel for such a random access procedure is called a physical random access channel (PRACH: Physical Random Access Channel).
- PRACH Physical Random Access Channel
- the random access procedure is used not only for initial connection but also for handover, resumption of data communication, and the like.
- the LTE mobile communication system allocates one or more Zadoff-Chu sequences as “RACH root sequence” of PRACH to each cell, and secures 64 RACH preambles (RACH preamble) per cell. It is configured as follows.
- the Zadoff-Chu sequence has a property that the amplitude is constant in the time domain and the frequency domain and the autocorrelation is 0, and the series obtained by cyclic shifting the Zadoff-Chu sequence are orthogonal to each other.
- one or more Zadoff-Chu sequences are cyclically shifted by a predetermined cyclic shift amount (12.5 ⁇ sec in the example of FIG. 9) to obtain 64 per cell.
- RACH preambles can be secured.
- values of 800 ⁇ sec and 12.5 ⁇ sec are examples.
- the number of RACH preambles that can be generated from one Zadoff-Chu sequence depends on the cell configuration (for example, cell radius, propagation delay state, high-speed movement support, etc.).
- the radio base station eNB when the propagation delay between the radio base station eNB and the mobile station UE is larger than the above-described cyclic shift amount, the radio base station eNB is delayed due to the cyclic shift, or the actual propagation delay Can not tell if it is delayed.
- the radio base station eNB determines that the cyclic shift amount is “Ncs in the reception window # 102.
- RACH preamble # 1 RACH preamble # 1 from the mobile station UE located in the center of the cell
- RACH preamble # 2 RACH from the mobile station UE located at the cell edge
- the Zadoff-Chu sequence assigned to the cell is designed. It is necessary to increase the number.
- the cell configuration (for example, the maximum transmission delay in the cell) may be changed after the operation of the mobile communication system is started. In this case, the above-described maximum transmission delay in the cell can be accurately estimated. It becomes difficult.
- an object of the present invention is to provide a mobile communication method and a radio base station that can efficiently reallocate a RACH preamble.
- a first feature of the present invention is a mobile communication method, in which each cell is assigned a predetermined sequence having constant amplitude and zero autocorrelation in the time domain and the frequency domain,
- the gist of the present invention is to generate a plurality of preambles by cyclically shifting the predetermined sequence only for a predetermined period, and obtaining a reception timing distribution of the preamble within the predetermined period in each cell.
- the second feature of the present invention is that a predetermined sequence having constant amplitude and zero autocorrelation is assigned to each cell in each of the time domain and the frequency domain, and the predetermined sequence is cyclically shifted by a predetermined period.
- a radio base station used in a mobile communication system configured to generate a plurality of preambles, wherein an acquisition unit configured to acquire a reception timing distribution of preambles within the predetermined period in each cell It is a summary to comprise.
- a third feature of the present invention is a mobile communication system including a radio base station and a control station, wherein the radio base station has a constant amplitude in each of the time domain and the frequency domain for each cell.
- a generation unit configured to generate a plurality of preambles by cyclically shifting a predetermined sequence having a correlation of 0 for a predetermined period, and reception timing distribution of the preamble within the predetermined period in each cell.
- the number of the predetermined sequences to be allocated to each cell or the length of the predetermined period is calculated, and the number of the predetermined sequences and the predetermined period
- a setting unit configured to notify the control station of the length, and the control station notifies each cell of the number of the predetermined sequences notified or the length of the predetermined period.
- an assignment unit configured to assign the predetermined sequence so that the surrounding cells different sequences.
- FIG. 1 is an overall configuration diagram of a mobile communication system according to a first embodiment of the present invention.
- FIG. 3 is a functional block diagram of a radio base station according to the first embodiment of the present invention. It is a figure for demonstrating an example of the calculation method of the statistical value by the wireless base station which concerns on the 1st Embodiment of this invention. It is a figure for demonstrating an example of the calculation method of the statistical value by the wireless base station which concerns on the 1st Embodiment of this invention. It is a figure for demonstrating an example of the calculation method of the statistical value by the wireless base station which concerns on the 1st Embodiment of this invention.
- the mobile communication system according to the present embodiment is an LTE mobile communication system.
- the mobile station UE in the cell # 1, transmits the cell # 1 to the radio base station eNB # 1 via the PRACH (Physical Random Access Channel).
- RACH preamble # 1 allocated to 1 is transmitted, and in cell # 2, RACH preamble # 2 allocated to cell # 2 is transmitted to the radio base station eNB # 2 via the PRACH. It is configured.
- RACH preamble # 1 is generated by cyclically shifting the Zadoff-Chu sequence assigned to cell # 1 by a predetermined cyclic shift amount (predetermined period) Ncs
- RACH preamble # 2 is generated by cyclically shifting the Zadoff-Chu sequence assigned to cell # 2 by a predetermined cyclic shift amount (predetermined period) Ncs.
- the radio base station eNB includes a RACH preamble reception unit 11, a statistical value calculation unit 12, an acquisition unit 13, a setting unit 14, and a notification unit 15.
- the RACH preamble receiving unit 11 is configured to receive the RACH preamble transmitted via the PRACH by the mobile station UE located in the subordinate cell.
- the RACH preamble receiving unit 11 is configured to try to receive a predetermined RACH preamble in each reception window.
- the length (predetermined period) of each reception window corresponds to the cyclic shift amount cyclically shifted when a predetermined RACH preamble is generated.
- the statistical value calculation unit 12 is configured to acquire the reception timing distribution of the RACH preamble within a predetermined period Ncs in each cell.
- the reception timing of the RACH preamble may be the same as the value of Timing Advance (TA).
- the reception timing of the RACH preamble may be a value corresponding to Timing Advance (TA).
- the RACH preamble reception timing distribution may be configured by dividing the reception window into a predetermined number of regions and the number of preambles for each of the divided regions.
- the predetermined number may be a value of 10 or a value of 64, for example.
- the statistical value calculation unit 12 receives reception windows # 101, # 102, # 103,... (The length (size) of each reception window corresponds to Ncs).
- the reception timing distribution of the RACH preamble is acquired.
- the lengths of the reception windows # 101, # 102, # 103,. Ncs) can be determined to be appropriate for the radius of cell #A.
- the statistical value calculation unit 12 acquires the reception timing distribution of the RACH preamble in the reception windows # 101, # 102, # 103,... (Corresponding to Ncs) in the cell #B. It is configured.
- the statistical value calculation unit 12 acquires the reception timing distribution of the RACH preamble in the reception windows # 101, # 102, # 103, ... (corresponding to Ncs) in the cell #C. It is configured.
- the reception timing of the RACH preamble extends to the latter half of the reception windows # 101, # 102, # 103,... And the length of the reception windows # 101, # 102, # 103,. It can be determined that (that is, the cyclic offset amount Ncs) is too short with respect to the radius of the cell #C.
- cells #A, #B, and #C in the above-described example are examples, and the same determination may be made for cells other than those described above.
- the acquisition unit 13 is configured to acquire information on the Zadoff-Chu sequence assigned to each cell from the surrounding radio base station eNB.
- the setting unit 14 determines the number of Zadoff-Chu sequences to be assigned to each cell #A to #G based on the reception timing distribution of the RACH preamble within the reception window in each cell acquired by the statistical value calculation unit 12 and a predetermined number.
- the length of the period (cyclic offset amount) Ncs is set.
- the setting unit 14 can set the length of the cyclic offset amount Ncs to be shorter.
- the setting unit 14 obtains a CDF (Cumulative Distribution Function) from the above reception timing distribution, and the reception timing of the 90% point of the CDF is included in the first half 50% in the reception window.
- CDF Cumulative Distribution Function
- the length of the cyclic offset amount Ncs is set so as to be shortened, and in other cases, the length of the cyclic offset amount Ncs is not set to be shortened, that is, the current state is maintained. May be performed.
- the setting unit 14 determines whether to shorten the length of the cyclic shift amount Ncs based on the above-described reception timing distribution and a predetermined threshold (in the above-described example, the value of the first half of the reception window is 50%). You may make these settings.
- the setting unit 14 determines the amount of cyclic shift when the number of preambles received in the first half of the reception window is large or when the ratio of preambles received in the first half of the reception window is large. It may be determined that the length of Ncs is shortened.
- the setting unit 14 may be configured to reduce the number of Zadoff-Chu sequences assigned to the cell #A, as shown in FIGS.
- the setting unit 14 determines the cells around the cell #A, that is, the cell #B, the cell #C, the cell #D, the cell #E, and the cell #.
- the type of Zadoff-Chu sequence assigned to cell #G may be changed.
- the setting unit 14 The cyclic offset amount Ncs can be set to be long.
- the setting unit 14 acquires a CDF (Cumulative Distribution Function) from the above-described reception timing distribution, and the reception timing of the 90% point of the CDF is included within 20% after the reception window.
- CDF Cumulative Distribution Function
- the length of the cyclic offset amount Ncs is set to be increased, and in other cases, the cyclic offset amount Ncs is not set to be increased, that is, the current state is maintained. May be performed.
- the setting unit 14 determines whether or not to increase the length of the cyclic shift amount Ncs based on the above-described reception timing distribution and a predetermined threshold (in the above-described example, the value of the latter half 20% in the reception window). You may make these settings.
- the setting unit 14 is cyclic when the number of preambles received in the second half of the reception window is large, or when the proportion of preambles received in the second half of the reception window is large. It may be determined that the length of the shift amount Ncs is increased.
- the setting unit 14 may be configured to increase the number of Zadoff-Chu sequences to be assigned to the cell #A, as shown in FIGS.
- the setting unit 14 assigns, to the cell #A, a Zadoff-Chu sequence that is different from the Zadoff-Chu sequence used in the cell under the control of the surrounding radio base station eNB acquired by the acquiring unit 13. It is configured.
- the setting unit 14 increases the number of Zadoff-Chu sequences to be assigned to the cell #A at the same time as the processing in the case where the number of Zadoff-Chu sequences is reduced, that is, the cells around the cell #A, that is, The type of Zadoff-Chu sequence assigned to cell #B, cell #C, cell #D, cell #E, cell #F, and cell #G may be changed.
- the setting unit 14 is configured to reset the number of Zadoff-Chu sequences and the length of a predetermined period (cyclic offset amount) Ncs as described above when a predetermined condition is satisfied.
- the setting unit 14 may be configured to perform the above-described setting autonomously as a SON (Self Organize Network) or by the Plug & Play function.
- SON Self Organize Network
- a node for SON or Plug & Play exists, and such a node cooperates with the setting unit 14 for each cell.
- the above setting may be performed autonomously.
- the setting unit 14 for each cell calculates the number of Zadoff-Chu sequences to be assigned to the cell and calculates the number of Zadoff-Chu sequences to be assigned to the cell by the above-described process. Notify the node (control station).
- the allocation unit of the node determines whether the Zadoff-Chu sequence allocated to each cell is based on the “number of Zadoff-Chu sequences allocated to the cell” notified from the setting unit 14 for each cell.
- the Zadoff-Chu sequence assigned to each cell may be determined so as to be different from each other.
- the assigning unit of the node notifies the setting unit 14 for each cell of the determined Zadoff-Chu sequence assigned to each cell.
- the setting unit 14 for each cell sets the Zadoff-Chu sequence assigned to each cell notified from the node (control station) as the Zadoff-Chu sequence of the cell.
- such a node may be called an aggregation node or a control station.
- the reception window size of the preamble used in the cell may be used.
- the notification unit 15 is configured to notify the neighboring radio base station eNB of information related to the Zadoff-Chu sequence assigned to the subordinate cell.
- the notification unit 15 notifies the mobile station UE located in the subordinate cell of the number of Zadoff-Chu sequences set by the setting unit 14 and the length of the predetermined period (cyclic offset amount) Ncs. It is configured.
- the number of Zadoff-Chu sequences set by the setting unit 14 and the length of the predetermined period (cyclic offset amount) Ncs may be notified to the mobile station UE as part of the broadcast information.
- the number of Zadoff-Chu sequences set by the setting unit 14 and the length of a predetermined period (cyclic offset amount) Ncs may be notified to the mobile station UE as part of the RRC message.
- the RRC message may be, for example, a HO command.
- the notification unit 15 sends the number of Zadoff-Chu sequences set by the setting unit 14 and a predetermined period to the mobile station UE that has transitioned to the cell due to handover via the handover-source radio base station eNB. (Cyclic offset amount) The length of Ncs may be notified.
- step S101 the radio base station eNB acquires a reception timing distribution of a predetermined RACH preamble in each reception window in a subordinate cell.
- step S102 the radio base station eNB redesigns the allocation of the Zadoff-Chu sequence to the subordinate cell based on the reception timing distribution of the RACH preamble and the Zadoff-Chu sequence used in the surrounding cells. Perform (see, for example, FIG. 6).
- step S103 the radio base station eNB allocates the Zadoff-Chu sequence and the cyclic shift amount Ncs to the subordinate cell, and in step S104, assigns the allocated Zadoff-Chu sequence and the cyclic shift amount Ncs to the mobile station UE. And notify neighboring cells.
- PRACH root sequence planning may be performed by performing the above-described steps S101 to S104 continuously or in parallel in the surrounding cells.
- the PRACH RACH root sequence planning may be performed in a SON manner by performing the above-described steps S101 to S104 continuously or in parallel and autonomously in the surrounding cells. .
- the radio base station eNB receives reception windows # 101, # 102, # 103 based on the reception timing distribution of predetermined RACH preambles in each reception window. ,... (That is, whether the cyclic offset amount Ncs) is appropriate for the radius of the cell #A, and based on the determination result, Zadoff-Chu assigned to the subordinate cell Since the series and the cyclic shift amount Ncs can be redesigned, the cell redesign work according to the change of the cell configuration can be performed efficiently.
- a first feature of the present embodiment is a mobile communication method, in which one or a plurality of Zadoff-Chu sequences (amplitude is constant in time domain and frequency domain and self A predetermined sequence whose correlation is 0), and a step of generating a plurality of RACH preambles by cyclically shifting the allocated Zadoff-Chu sequence by a predetermined period Ncs in each cell #A to #G; Each cell #A to #G includes a step of acquiring a RACH preamble reception timing distribution within a predetermined period Ncs.
- the number of Zadoff-Chu sequences to be assigned to each cell #A to #G or the predetermined period Ncs based on the acquired reception timing distribution You may further have the process of setting length.
- the second feature of the present embodiment is that one or a plurality of Zadoff-Chu sequences are assigned to each cell #A to #G, and the assigned Zadoff-Chu sequences are cyclically shifted by a predetermined period Ncs.
- a radio base station eNB used in a mobile communication system configured to generate a plurality of RACH preambles, and obtains reception timing distribution of RACH preambles within a predetermined period Ncs in each cell #A to #G
- the gist of the invention is to include a statistical value calculation unit 12 (acquisition unit) configured to perform the above.
- a predetermined to be applied to the Zadoff-Chu sequence assigned to each cell #A to #G You may further comprise the setting part 14 comprised so that the length of period Ncs might be set.
- radio base station eNB and the mobile station UE 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. .
- Software modules include RAM (Random Access Memory), flash memory, ROM (Read Only Memory), EPROM (Erasable Programmable ROM), EEPROM (Electronically Erasable and Programmable, Removable ROM, and Hard Disk). Alternatively, it may be provided in a storage medium of an arbitrary format such as a CD-ROM.
- Such a storage medium is connected to the processor so that the processor can read and write information from and to the storage medium. Further, such a storage medium may be integrated in the processor. Such a storage medium and processor may be provided in the ASIC. Such an ASIC may be provided in the radio base station eNB and the mobile station UE. Further, the storage medium and the processor may be provided in the radio base station eNB and the mobile station UE as discrete components.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Description
図1乃至図6を参照して、本発明の第1の実施形態に係る移動通信システムの構成について説明する。
図8を参照して、本発明の第1の実施形態に係る移動通信システムの動作について、具体的には、本発明の第1の実施形態に係る無線基地局eNBの動作について説明する。
本発明の第1の実施形態に係る移動通信システムによれば、無線基地局eNBが、各受信ウィンドウ内における所定のRACHプリアンブルの受信タイミング分布に基づいて、受信ウィンドウ#101、#102、#103、…の長さ(すなわち、サイクリックオフセット量Ncs)がセル#Aの半径に対して適切であるか否かについて判断し、かかる判断結果に基づいて、配下のセルに対して割り当てるZadoff-Chu系列及びサイクリックシフト量Ncsを再設計することができるため、効率的に、セル構成の変更に応じたセル再設計作業を行うことができる。
Claims (7)
- 各セルに対して、時間領域及び周波数領域で振幅が一定であり自己相関が0である所定系列を割り当てる工程と、
各セルにおいて、前記所定系列を所定期間だけサイクリックシフトすることによって、複数のプリアンブルを生成する工程と、
各セルにおいて、前記所定期間内のプリアンブルの受信タイミング分布を取得する工程とを有することを特徴とする移動通信方法。 - 各セルにおいて、取得した前記受信タイミング分布に基づいて、各セルに対して割り当てる所定系列の数又は所定期間の長さを設定する工程を更に有することを特徴とする請求項1に記載の移動通信方法。
- 前記所定系列を割り当てる工程は、周辺のセルと異なる系列となるように該所定系列を割り当てることを特徴とする請求項1に記載の移動通信方法。
- 各セルに対して、時間領域及び周波数領域で振幅が一定であり自己相関が0である所定系列を割り当て、該所定系列を所定期間だけサイクリックシフトすることによって複数のプリアンブルを生成するように構成されている移動通信システムにおいて用いられる無線基地局であって、
各セルにおいて、前記所定期間内のプリアンブルの受信タイミング分布を取得するように構成されている取得部を具備することを特徴とする無線基地局。 - 各セルにおいて、取得した前記受信タイミング分布に基づいて、各セルに対して割り当てられた所定系列に適用すべき所定期間の長さを設定するように構成されている設定部を更に具備することを特徴とする請求項4に記載の無線基地局。
- 周辺のセルと異なる系列となるように前記所定系列を割り当てることを特徴とする請求項4に記載の無線基地局。
- 無線基地局と制御局とを具備する移動通信システムであって、
前記無線基地局は、
各セルに対して、時間領域及び周波数領域で振幅が一定であり自己相関が0である所定系列を所定期間だけサイクリックシフトすることによって複数のプリアンブルを生成するように構成されている生成部と、
各セルにおいて、前記所定期間内のプリアンブルの受信タイミング分布を取得するように構成されている取得部と、
前記受信タイミング分布に基づいて、各セルに対して割り当てる前記所定系列の数又は前記所定期間の長さを算出し、該所定系列の数又は該所定期間の長さを前記制御局に通知するように構成されている設定部とを具備し、
前記制御局は、
各セルに対して、通知された前記所定系列の数又は前記所定期間の長さに基づいて、周辺のセルと異なる系列となるように前記所定系列を割り当てるように構成されている割当部を具備することを特徴とする移動通信システム。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201080044956.1A CN102687571B (zh) | 2009-10-07 | 2010-10-05 | 移动通信方法以及无线基站 |
JP2011535396A JP5309221B2 (ja) | 2009-10-07 | 2010-10-05 | 移動通信方法及び無線基地局 |
US13/500,306 US8830948B2 (en) | 2009-10-07 | 2010-10-05 | Mobile communication method, mobile communication system, and radio base station |
EP10821991.6A EP2487971B1 (en) | 2009-10-07 | 2010-10-05 | Mobile communication method and radio base station |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2009-233915 | 2009-10-07 | ||
JP2009233915 | 2009-10-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2011043321A1 true WO2011043321A1 (ja) | 2011-04-14 |
Family
ID=43856774
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2010/067426 WO2011043321A1 (ja) | 2009-10-07 | 2010-10-05 | 移動通信方法及び無線基地局 |
Country Status (5)
Country | Link |
---|---|
US (1) | US8830948B2 (ja) |
EP (1) | EP2487971B1 (ja) |
JP (1) | JP5309221B2 (ja) |
CN (1) | CN102687571B (ja) |
WO (1) | WO2011043321A1 (ja) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013187835A (ja) * | 2012-03-09 | 2013-09-19 | Sumitomo Electric Ind Ltd | ランダムアクセス制御装置、無線基地局装置、管理装置およびランダムアクセス制御プログラム |
CN104982079A (zh) * | 2013-02-06 | 2015-10-14 | 高通股份有限公司 | Ncs参数的确定和逻辑根序列分配 |
JP2016010009A (ja) * | 2014-06-24 | 2016-01-18 | Kddi株式会社 | 基地局装置、無線信号制御方法およびコンピュータプログラム |
JP2021533592A (ja) * | 2018-06-06 | 2021-12-02 | ノキア テクノロジーズ オサケユイチア | タイミングアドバンスを決定するための方法、デバイス、およびコンピュータ可読媒体 |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2532205A4 (en) * | 2010-02-03 | 2016-07-20 | Ericsson Telefon Ab L M | ADAPTATION OF CYCLIC CHANGE FOR RANDOM ACCESS PREAMBLE |
JP5437422B2 (ja) * | 2012-03-13 | 2014-03-12 | 株式会社Nttドコモ | 無線基地局及び移動局 |
CN103763784B (zh) * | 2014-01-22 | 2017-07-18 | 东南大学 | 用于td‑lte/td‑lte‑a系统区分用户优先级前导码分配的上行接入方法 |
WO2015119568A1 (en) * | 2014-02-10 | 2015-08-13 | Telefonaktiebolaget L M Ericsson (Publ) | Methods and devices for random access preamble shifting |
CN108271161B (zh) * | 2016-12-31 | 2020-10-16 | 普天信息技术有限公司 | LTE系统中Prach根序列优化方法及装置 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009093628A1 (ja) * | 2008-01-22 | 2009-07-30 | Nec Corporation | 無線アクセスシステムの送信機及び受信機、無線アクセスシステムの送信方法及び受信方法、並びにプログラム |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7808886B2 (en) * | 2006-01-18 | 2010-10-05 | Freescale Semiconductor, Inc. | Pilot signal in an FDMA communication system |
KR101025993B1 (ko) | 2006-03-27 | 2011-03-30 | 텍사스 인스트루먼츠 인코포레이티드 | 무선 네트워크에 액세스하는 방법, 업링크 자원들을 할당하는 방법 및 랜덤 액세스 신호를 전송하기 위한 장치 |
US8098745B2 (en) * | 2006-03-27 | 2012-01-17 | Texas Instruments Incorporated | Random access structure for wireless networks |
JP4917101B2 (ja) * | 2006-10-06 | 2012-04-18 | パナソニック株式会社 | 無線通信装置および無線通信方法 |
US9357564B2 (en) * | 2007-06-19 | 2016-05-31 | Texas Instruments Incorporated | Signaling of random access preamble parameters in wireless networks |
US20090073944A1 (en) * | 2007-09-17 | 2009-03-19 | Jing Jiang | Restricted Cyclic Shift Configuration for Random Access Preambles in Wireless Networks |
US9893859B2 (en) * | 2007-10-30 | 2018-02-13 | Texas Instruments Incorporated | Transmission of sounding reference signal and scheduling request in single carrier systems |
CN101336003B (zh) * | 2008-08-05 | 2012-04-18 | 中兴通讯股份有限公司 | 生成前导序列的方法及确定循环移位步长的方法 |
US8068458B2 (en) * | 2008-08-19 | 2011-11-29 | Telefonaktiebolaget L M Ericson (Publ) | Random access preamble selection |
-
2010
- 2010-10-05 CN CN201080044956.1A patent/CN102687571B/zh not_active Expired - Fee Related
- 2010-10-05 JP JP2011535396A patent/JP5309221B2/ja active Active
- 2010-10-05 US US13/500,306 patent/US8830948B2/en not_active Expired - Fee Related
- 2010-10-05 WO PCT/JP2010/067426 patent/WO2011043321A1/ja active Application Filing
- 2010-10-05 EP EP10821991.6A patent/EP2487971B1/en not_active Not-in-force
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009093628A1 (ja) * | 2008-01-22 | 2009-07-30 | Nec Corporation | 無線アクセスシステムの送信機及び受信機、無線アクセスシステムの送信方法及び受信方法、並びにプログラム |
Non-Patent Citations (2)
Title |
---|
3GPP R1-070189, - 15 January 2007 (2007-01-15), pages 1 - 4, XP050104231 * |
See also references of EP2487971A4 * |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013187835A (ja) * | 2012-03-09 | 2013-09-19 | Sumitomo Electric Ind Ltd | ランダムアクセス制御装置、無線基地局装置、管理装置およびランダムアクセス制御プログラム |
CN104982079A (zh) * | 2013-02-06 | 2015-10-14 | 高通股份有限公司 | Ncs参数的确定和逻辑根序列分配 |
JP2016512666A (ja) * | 2013-02-06 | 2016-04-28 | クアルコム,インコーポレイテッド | Ncsパラメータおよび論理ルート系列の割当ての決定 |
US10075933B2 (en) | 2013-02-06 | 2018-09-11 | Qualcomm Incorporated | Determination of Ncs parameter and logical root sequence assignments |
CN104982079B (zh) * | 2013-02-06 | 2019-05-10 | 高通股份有限公司 | Ncs参数的确定和逻辑根序列分配 |
JP2016010009A (ja) * | 2014-06-24 | 2016-01-18 | Kddi株式会社 | 基地局装置、無線信号制御方法およびコンピュータプログラム |
JP2021533592A (ja) * | 2018-06-06 | 2021-12-02 | ノキア テクノロジーズ オサケユイチア | タイミングアドバンスを決定するための方法、デバイス、およびコンピュータ可読媒体 |
US11647536B2 (en) | 2018-06-06 | 2023-05-09 | Nokia Technologies Oy | Methods, device and computer-readable medium for determining timing advance |
Also Published As
Publication number | Publication date |
---|---|
EP2487971A1 (en) | 2012-08-15 |
CN102687571B (zh) | 2016-03-30 |
JPWO2011043321A1 (ja) | 2013-03-04 |
EP2487971B1 (en) | 2017-04-05 |
US8830948B2 (en) | 2014-09-09 |
CN102687571A (zh) | 2012-09-19 |
JP5309221B2 (ja) | 2013-10-09 |
EP2487971A4 (en) | 2014-01-15 |
US20120224560A1 (en) | 2012-09-06 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5309221B2 (ja) | 移動通信方法及び無線基地局 | |
US10390371B2 (en) | Methods and devices for transmitting/receiving data based on the allocation of random access resources to uplink subframes | |
RU2493658C2 (ru) | Способ и устройство для осуществления связи по радиоканалу | |
CN110475371B (zh) | 用户设备执行的方法、用户设备和基站 | |
WO2010090156A1 (ja) | 移動通信方法及び無線基地局 | |
US20130128847A1 (en) | Method and device for transmitting downlink control information, method and device for receiving downlink control information, terminal, base station and communication system | |
JP7445607B2 (ja) | 通信装置、通信方法および集積回路 | |
US20200145152A1 (en) | System and method for transmitting a signal | |
KR100912821B1 (ko) | 무선 센서 네트워크에서 비컨 전송을 위한 타임 슬롯의할당 장치 및 그 방법 | |
CN108809597B (zh) | 前导序列循环移位量确定方法及其集合配置方法与装置 | |
EP3533281B1 (en) | Methods and devices for random access | |
EP4018706B1 (en) | Method for cognitive physical random access channel planning and related apparatus | |
JP2021511689A (ja) | 制御リソース領域のリソース割り当てのための方法及びデバイス | |
EP3133880A1 (en) | Method and apparatus for transmitting synchronization signal for direct device to device communication in wireless communication system | |
KR20090097478A (ko) | 상향링크 구간의 간섭 완화방법 및 장치 | |
US20110002286A1 (en) | Method and apparatus for allocating data burst | |
WO2021007714A1 (en) | Method, device and computer readable medium for prach sequence generation | |
EP4078877A1 (en) | Methods and devices for handling private transmissions from a wireless device | |
KR100934091B1 (ko) | 데이터 버스트 할당 방법 및 장치 | |
KR20090072624A (ko) | 데이터 버스트 할당 방법 및 장치 | |
CN106804041B (zh) | 一种无线通信方法和设备 | |
KR20100038763A (ko) | 데이터 버스트 할당 방법 및 장치 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 201080044956.1 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 10821991 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2011535396 Country of ref document: JP |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
REEP | Request for entry into the european phase |
Ref document number: 2010821991 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2010821991 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 3688/CHENP/2012 Country of ref document: IN |
|
WWE | Wipo information: entry into national phase |
Ref document number: 13500306 Country of ref document: US |