WO2013133248A1 - 端末装置、基地局装置、通信方法、集積回路 - Google Patents
端末装置、基地局装置、通信方法、集積回路 Download PDFInfo
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- WO2013133248A1 WO2013133248A1 PCT/JP2013/055919 JP2013055919W WO2013133248A1 WO 2013133248 A1 WO2013133248 A1 WO 2013133248A1 JP 2013055919 W JP2013055919 W JP 2013055919W WO 2013133248 A1 WO2013133248 A1 WO 2013133248A1
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- reference signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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- 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
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
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- 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
Definitions
- a communication method in the present invention is a communication method of a base station device that transmits a reference signal related to a physical downlink shared channel to a terminal device, and scheduling of the physical downlink shared channel is performed in a predetermined manner.
- the downlink control information format is used, the reference signal generated based on the physical layer cell identity is transmitted to the terminal device, and the predetermined downlink control information format is used for scheduling of the physical downlink shared channel.
- the reference signal generated based on the higher layer parameters is transmitted to the terminal apparatus.
- aggregation of a plurality of serving cells is supported in the downlink and uplink (referred to as carrier aggregation).
- a transmission bandwidth of up to 110 resource blocks can be used.
- one serving cell is defined as a primary cell (Pcell).
- a serving cell other than the primary cell is defined as a secondary cell (Scell; Secondary Cell).
- the pseudo random sequence c (n) is defined by the following equation.
- the first M sequence x 1 (n) is initialized by the following equation.
- c init is defined by the following equation.
- the terminal can detect the N ID cell using a synchronization signal (Synchronization signals). Also, the terminal can obtain the N ID cell from information included in a higher layer signal (for example, a band over command) transmitted from the base station. In addition, the base station can indicate the n SCID to the terminal using information on the scrambling identity (that is, downlink control information) transmitted on the PDCCH.
- a synchronization signal Synchronization signals
- the terminal can obtain the N ID cell from information included in a higher layer signal (for example, a band over command) transmitted from the base station.
- the base station can indicate the n SCID to the terminal using information on the scrambling identity (that is, downlink control information) transmitted on the PDCCH.
- the base station sets a plurality of sets of parameters “X” and “Y” using upper layer signals, and one set of the set sets is transmitted on the PDCCH downlink. You may instruct
- the parameter “X” and the parameter “Y” are set independently. Further, for example, the parameter “X” and / or the parameter “Y” may be set in association with n SCID . Further, for example, n SCID may be used as the parameter “Y”.
- N ID cell and / or n SCID are also described as the first parameter.
- the parameter “X” and / or the parameter “Y” is also described as a second parameter.
- the terminal identifies a condition and switches a parameter related to reference signal generation (may be a reference signal sequence) based on the condition. That is, when the condition is A, the terminal assumes that the reference signal is generated using (1) in Equation 5. That is, when the condition is A, the terminal assumes that the reference signal is generated using the first parameter. That is, when the condition is A, the terminal transmits a reference signal generated using the first parameter (which may be a part of the reference signal sequence) within a resource block allocated for PDSCH transmission. Assume that it is mapped to a resource element. That is, when the condition is A, the terminal demodulates the PDSCH using the reference signal generated using the first parameter.
- a parameter related to reference signal generation may be a reference signal sequence
- the terminal assumes that the reference signal is generated using (2) in Equation 5. That is, when the condition is B, the terminal assumes that the reference signal is generated using the second parameter. That is, when the condition is B, the terminal transmits a reference signal generated using the second parameter (which may be a part of the reference signal sequence) within a resource block allocated for PDSCH transmission. Assume that it is mapped to a resource element. That is, when the condition is B, the terminal demodulates the PDSCH using the reference signal generated using the first parameter.
- the terminal demodulates the PDSCH using a reference signal generated using a different method based on the search space in which the PDCCH is detected. That is, the terminal recognizes that the reference signal is generated by a different method based on whether the PDCCH is detected in the CSS or the USS.
- the terminal detects a PDCCH with a CRC scrambled by C-RNTI, the terminal receives a reference signal generated using the first parameter from the base station, and is scrambled by SPS C-RNTI.
- a PDCCH with a CRC When a PDCCH with a CRC is detected, a reference signal generated using the second parameter is received from the base station. That is, if the terminal detects a PDCCH with a CRC scrambled by SPS C-RNTI, it receives a reference signal from the base station as generated using the first parameter, and uses SPS C-RNTI. If a PDCCH with a scrambled CRC is detected, a reference signal is received from the base station as generated using the second parameter.
- the terminal demodulates the PDSCH using a reference signal generated using a different method based on the RNTI in which the CRC is scrambled. That is, the terminal recognizes that the reference signal is generated in a different manner based on whether the CRC is scrambled by the C-RNTI or the SPS C-RNTI.
- Condition B is that PDCCH with CRC scrambled by C-RNTI is detected (decoded) in USS, or SPS C-RNTI is detected (decoded) in any search space (CSS or USS). , May be.
- these conditions will be referred to as conditions C for ease of explanation. That is, in the case of the condition C, the base station generates a reference signal using the second parameter. In the case of condition C, the terminal demodulates the PDSCH using the reference signal generated using the second parameter.
- the terminal when the terminal detects a PDCCH with a CRC scrambled by C-RNTI in the CSS, the terminal receives a reference signal generated using the first parameter from the base station.
- the terminal when the terminal detects a PDCCH with a CRC scrambled by C-RNTI in USS or detects SPS C-RNTI in any search space (CSS or USS), the terminal uses the second parameter.
- the reference signal generated in this way is received from the base station. That is, when a terminal detects a PDCCH with a CRC scrambled by C-RNTI in CSS, the terminal receives a reference signal as being generated using the first parameter from the base station.
- the terminal when the terminal detects a PDCCH with a CRC scrambled by C-RNTI in USS or detects SPS C-RNTI in any search space (CSS or USS), the terminal uses the second parameter. As a result, the reference signal is received from the base station.
- the terminal demodulates the PDSCH using a reference signal generated using a different method based on the search space where the PDCCH is detected and the RNTI scrambled to the CRC. That is, the terminal recognizes that the reference signal is generated by different methods based on the search space where the PDCCH is detected and the RNTI scrambled to the CRC.
- condition B includes receiving (detecting) a DCI format other than the predetermined DCI format (hereinafter, the second DCI format). That is, the base station generates a reference signal using the second parameter when transmitting the second DCI format. Further, when the terminal receives the second DCI format, the terminal demodulates the PDSCH using the reference signal generated using the second parameter.
- the second DCI format a DCI format other than the predetermined DCI format (hereinafter, the second DCI format). That is, the base station generates a reference signal using the second parameter when transmitting the second DCI format. Further, when the terminal receives the second DCI format, the terminal demodulates the PDSCH using the reference signal generated using the second parameter.
- the terminal when the terminal receives the second DCI format, the terminal demodulates the PDSCH using the reference signal generated using the parameter “X”. Further, when the terminal receives the second DCI format, the terminal demodulates the PDSCH using the reference signal generated using the parameter “Y”.
- the method of setting the parameter “X” and / or the parameter “Y” is as described above.
- information on the reference signal sequence identity and / or information on the scrambling identity is included in the second DCI format and transmitted.
- the terminal when the terminal detects the first DCI format, the terminal receives the reference signal generated using the first parameter from the base station, and when the terminal detects the second DCI format, A reference signal generated using the two parameters is received from the base station. That is, if the terminal detects the first DCI format, the terminal receives the reference signal from the base station as generated using the first parameter, and detects the first DCI format, A reference signal is received from the base station as generated using the second parameter.
- the terminal demodulates the PDSCH using a reference signal generated using a different method based on the received DCI format. That is, the terminal recognizes that the reference signal is generated by a different method based on whether a predetermined DCI format is received or a DCI format other than the predetermined DCI format is received.
- the terminal may demodulate the PDSCH using a reference signal generated using a different method based on the DCI format, the search space in which the PDCCH is detected, and the RNTI scrambled in the CRC. That is, the terminal may recognize that the reference signal is generated in a different manner based on the DCI format, the search space where the PDCCH is detected, and the RNTI scrambled to the CRC.
- the base station may generate the reference signal using the default value as the parameter (2) in Equation 5. That is, the base station generates the reference signal using the default value of the parameter “X”. Also, the base station generates a reference signal using the default value of the parameter “Y”. That is, the base station maps a reference signal (which may be a part of the reference signal sequence) generated using the default value to a resource element in a resource block allocated for PDSCH transmission. That is, the base station assumes that the terminal demodulates the PDSCH using the reference signal generated using the default value.
- the terminal may assume that the reference signal is generated using the default value as the parameter (2) in Equation 5. That is, the terminal assumes that the reference signal is generated using the default value of the parameter “X”. The terminal also assumes that the reference signal is generated using the default value of the parameter “Y”. That is, the terminal assumes that a reference signal (which may be a part of a reference signal sequence) generated using a default value is mapped to a resource element in a resource block allocated for PDSCH transmission. . That is, the terminal demodulates the PDSCH using the reference signal generated using the default value.
- the default value is defined in advance by specifications or the like. That is, the default value is defined in advance according to specifications and the like, and can be known information between the base station and the terminal.
- the default value of the parameter “X” may be N ID cell .
- the default value of the parameter “Y” may be “0”.
- the reference signal sequence can be switched more flexibly and the reference signal can be transmitted and received.
- the reference signal can be transmitted and received by switching the reference signal sequence more dynamically by the method as described above.
- the reference signal can be transmitted and received using the condition A during the period when the base station and the terminal are performing the setting in the RRC layer. That is, in the period when the setting in the RRC layer is unclear (the period in which the setting is inconsistent between the base station and the terminal), the reference signal is transmitted using the condition A. You can send and receive. That is, it is possible to continue communication even during a period in which the base station and the terminal are performing settings in the RRC layer, and communication using radio resources efficiently can be performed.
- the program that operates in the primary base station, the secondary base station, and the terminal related to the present invention is a program (a program that causes a computer to function) that controls the CPU and the like so as to realize the functions of the above-described embodiments related to the present invention.
- Information handled by these devices is temporarily stored in the RAM at the time of processing, then stored in various ROMs and HDDs, read out by the CPU, and corrected and written as necessary.
- a recording medium for storing the program a semiconductor medium (for example, ROM, nonvolatile memory card, etc.), an optical recording medium (for example, DVD, MO, MD, CD, BD, etc.), a magnetic recording medium (for example, magnetic tape, Any of a flexible disk etc. may be sufficient.
- the processing is performed in cooperation with the operating system or other application programs.
- the function of the invention may be realized.
- the program when distributing to the market, can be stored in a portable recording medium for distribution, or transferred to a server computer connected via a network such as the Internet.
- the storage device of the server computer is also included in the present invention.
- each functional block of the primary base station, the secondary base station, and the terminal may be individually chipped, or a part or all of them may be integrated into a chip.
- the method of circuit integration is not limited to LSI's, and implementation using dedicated circuitry or general purpose processors is also possible.
- an integrated circuit based on the technology can also be used.
- the present invention is suitable for mobile station apparatuses, base station apparatuses, communication methods, wireless communication systems, and integrated circuits.
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Abstract
Description
102 セカンダリー基地局
103 回線
104、204、205 端末
105、106、206、207 下りリンク
301、405 上位レイヤ
302 信号生成部
303 参照信号多重部
304 送信信号生成部
305 送信部
401 受信部
402 受信信号処理部
403 伝送路推定部
404 信号処理部
701 マクロ基地局
702、703 RRH
704 端末
705、706、707 カバレッジ
708、709 回線
Claims (12)
- 物理下りリンク共用チャネルに関連する参照信号を基地局装置から受信する端末装置であって、
前記物理下りリンク共用チャネルのスケジューリングに、所定の下りリンク制御情報フォーマットが使用された場合には、物理レイヤセルアイデンティティに基づいて生成された前記参照信号を前記基地局装置から受信する手段と、
前記物理下りリンク共用チャネルのスケジューリングに、前記所定の下りリンク制御情報フォーマット以外の下りリンク制御情報フォーマットが使用された場合には、上位層によって設定されたパラメータに基づいて生成された前記参照信号を前記基地局装置から受信する手段と、
を備えることを特徴とする端末装置。 - 前記所定の下りリンク制御情報フォーマット以外の下りリンク制御情報フォーマットには、複数のパラメータの中から前記パラメータを指示するために使用される下りリンク制御情報が含まれる
ことを特徴とする請求項1に記載の端末装置。 - 物理下りリンク共用チャネルに関連する参照信号を端末装置へ送信する基地局装置であって、
前記物理下りリンク共用チャネルのスケジューリングに、所定の下りリンク制御情報フォーマットを使用した場合には、物理レイヤセルアイデンティティに基づいて生成した前記参照信号を前記端末装置へ送信する手段と、
前記物理下りリンク共用チャネルのスケジューリングに、前記所定の下りリンク制御情報フォーマット以外の下りリンク制御情報フォーマットを使用した場合には、上位層のパラメータに基づいて生成した前記参照信号を前記端末装置へ送信する手段と、
を備えることを特徴とする基地局装置。 - 前記所定の下りリンク制御情報フォーマット以外の下りリンク制御情報フォーマットには、複数のパラメータの中から前記パラメータを指示するために使用される下りリンク制御情報が含まれる
ことを特徴とする請求項3に記載の基地局装置。 - 物理下りリンク共用チャネルに関連する参照信号を基地局装置から受信する端末装置の通信方法であって、
前記物理下りリンク共用チャネルのスケジューリングに、所定の下りリンク制御情報フォーマットが使用された場合には、物理レイヤセルアイデンティティに基づいて生成された前記参照信号を前記基地局装置から受信し、
前記物理下りリンク共用チャネルのスケジューリングに、前記所定の下りリンク制御情報フォーマット以外の下りリンク制御情報フォーマットが使用された場合には、上位層によって設定されたパラメータに基づいて生成された前記参照信号を前記基地局装置から受信する
ことを特徴とする通信方法。 - 前記所定の下りリンク制御情報フォーマット以外の下りリンク制御情報フォーマットには、複数のパラメータの中から前記パラメータを指示するために使用される下りリンク制御情報が含まれる
ことを特徴とする請求項5に記載の通信方法。 - 物理下りリンク共用チャネルに関連する参照信号を端末装置へ送信する基地局装置の通信方法であって、
前記物理下りリンク共用チャネルのスケジューリングに、所定の下りリンク制御情報フォーマットを使用した場合には、物理レイヤセルアイデンティティに基づいて生成した前記参照信号を前記端末装置へ送信し、
前記物理下りリンク共用チャネルのスケジューリングに、前記所定の下りリンク制御情報フォーマット以外の下りリンク制御情報フォーマットを使用した場合には、上位層のパラメータに基づいて生成した前記参照信号を前記端末装置へ送信する
ことを特徴とする通信方法。 - 前記所定の下りリンク制御情報フォーマット以外の下りリンク制御情報フォーマットには、複数のパラメータの中から前記パラメータを指示するために使用される下りリンク制御情報が含まれる
ことを特徴とする請求項7に記載の通信方法。 - 物理下りリンク共用チャネルに関連する参照信号を基地局装置から受信する端末装置に搭載される集積回路であって、
前記物理下りリンク共用チャネルのスケジューリングに、所定の下りリンク制御情報フォーマットが使用された場合には、物理レイヤセルアイデンティティに基づいて生成された前記参照信号を前記基地局装置から受信する機能と、
前記物理下りリンク共用チャネルのスケジューリングに、前記所定の下りリンク制御情報フォーマット以外の下りリンク制御情報フォーマットが使用された場合には、上位層によって設定されたパラメータに基づいて生成された前記参照信号を前記基地局装置から受信する機能と、を前記端末装置に発揮させる
ことを特徴とする集積回路。 - 前記所定の下りリンク制御情報フォーマット以外の下りリンク制御情報フォーマットには、複数のパラメータの中から前記パラメータを指示するために使用される下りリンク制御情報が含まれる
ことを特徴とする請求項9に記載の集積回路。 - 物理下りリンク共用チャネルに関連する参照信号を端末装置へ送信する基地局装置に搭載される集積回路であって、
前記物理下りリンク共用チャネルのスケジューリングに、所定の下りリンク制御情報フォーマットを使用した場合には、物理レイヤセルアイデンティティに基づいて生成した前記参照信号を前記端末装置へ送信する機能と、
前記物理下りリンク共用チャネルのスケジューリングに、前記所定の下りリンク制御情報フォーマット以外の下りリンク制御情報フォーマットを使用した場合には、上位層のパラメータに基づいて生成した前記参照信号を前記端末装置へ送信する機能と、を前記基地局装置に発揮させる
ことを特徴とする集積回路。 - 前記所定の下りリンク制御情報フォーマット以外の下りリンク制御情報フォーマットには、複数のパラメータの中から前記パラメータを指示するために使用される下りリンク制御情報が含まれる
ことを特徴とする請求項11に記載の集積回路。
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US14/382,741 US9860885B2 (en) | 2012-03-06 | 2013-03-05 | Terminal device, base station device, communication method, and integrated circuit using reference signals for demodulation |
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AU2013228462A AU2013228462A1 (en) | 2012-03-06 | 2013-03-05 | Terminal device, base station device, communication method, and integrated circuit |
CN201380012550.9A CN104145496B (zh) | 2012-03-06 | 2013-03-05 | 终端装置、基站装置、通信方法、集成电路 |
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Also Published As
Publication number | Publication date |
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JP2013187591A (ja) | 2013-09-19 |
EP2824957A4 (en) | 2015-10-21 |
CN104145496A (zh) | 2014-11-12 |
AU2016222480B2 (en) | 2018-11-01 |
JP6191997B2 (ja) | 2017-09-06 |
US20150016385A1 (en) | 2015-01-15 |
US9860885B2 (en) | 2018-01-02 |
CN104145496B (zh) | 2018-09-14 |
AU2013228462A1 (en) | 2014-09-25 |
EP2824957B1 (en) | 2022-01-26 |
AU2016222480A1 (en) | 2016-09-22 |
EP2824957A1 (en) | 2015-01-14 |
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