JP2006203820A - Start-up control method of reception diversity function - Google Patents
Start-up control method of reception diversity function Download PDFInfo
- Publication number
- JP2006203820A JP2006203820A JP2005016093A JP2005016093A JP2006203820A JP 2006203820 A JP2006203820 A JP 2006203820A JP 2005016093 A JP2005016093 A JP 2005016093A JP 2005016093 A JP2005016093 A JP 2005016093A JP 2006203820 A JP2006203820 A JP 2006203820A
- Authority
- JP
- Japan
- Prior art keywords
- reception diversity
- channel
- reception
- amc
- control method
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Landscapes
- Mobile Radio Communication Systems (AREA)
- Radio Transmission System (AREA)
Abstract
Description
本発明は、受信ダイバーシチ機能の起動制御方法に関する。 The present invention relates to a reception diversity function activation control method.
2001年度より商用サービスがスタートしたW-CDMAシステムでは基地局からの送信電力制御により、移動機の受信品質は常に一定に保たれる。したがって、受信ダイバーシチを適用することによりSIR（Signal to Interference power Ratio）が向上しても、基地局からの送信電力が低減されるだけで、ユーザに対するメリットは少ない。（ただし、運用側の観点ではチャネル容量が増大するという大きなメリットがある）。そのため、受信ダイバーシチ機能を搭載したW-CDMA端末は消費電力が大幅に増加してしまうのに対して、ユーザに対する恩恵が少ないため、これまで開発がなされなかった。 In the W-CDMA system, which commercial service started in 2001, the reception quality of the mobile device is always kept constant by controlling the transmission power from the base station. Therefore, even if SIR (Signal to Interference power Ratio) is improved by applying reception diversity, only the transmission power from the base station is reduced, and there are few merits for the user. (However, there is a great merit that the channel capacity increases from the operation side). For this reason, W-CDMA terminals equipped with a reception diversity function greatly increase power consumption, but have not been developed so far because they have little benefit to users.
W-CDMAにおいてユーザにとって恩恵の少なかった受信ダイバーシチ技術は高速無線通信においてその効果を発揮する。HSDPA（High Speed Downlink Packet Access）システムのような高速パケット通信をターゲットとした伝送システムにおいては、移動機の受信環境に応じてスループットが変動する適応変復調・誤り訂正符号化 （AMC: Adaptive Modulation and channel Coding） が適用される。このAMC技術は基地局での送信電力制御を行わず、一定の送信電力での送信を行い、移動機での受信品質に応じて送信するTBS（Transport Block Size）を決定するため、受信ダイバーシチの適用により受信SIRが向上し、より高速なパケット通信が可能となる。しかしながら、現在受信ダイバーシチを搭載した端末が存在しないため、HSDPAのみ適用させるという制御は検討されていない。 Receiving diversity technology, which was less beneficial for users in W-CDMA, is effective in high-speed wireless communication. In transmission systems targeting high-speed packet communications such as the HSDPA (High Speed Downlink Packet Access) system, adaptive modulation and error correction coding (AMC: Adaptive Modulation and channel) varies in throughput according to the reception environment of the mobile station. Coding) is applied. This AMC technology does not perform transmission power control at the base station, performs transmission at a constant transmission power, and determines the TBS (Transport Block Size) to be transmitted according to the reception quality at the mobile station. Application improves reception SIR and enables higher-speed packet communication. However, since there is currently no terminal equipped with reception diversity, control to apply only HSDPA has not been studied.
そこで、本発明は、上述した課題を解決するために、端末での電力をいたずらに消費することなく、スループット特性を向上させることができる受信ダイバーシチ機能の起動制御方法を提供することを目的とする。 Accordingly, an object of the present invention is to provide a reception diversity function activation control method that can improve throughput characteristics without unnecessarily consuming power at a terminal in order to solve the above-described problems. .
本発明の受信ダイバーシチ機能の起動制御方法は、受信端末における受信ダイバーシチ機能の起動制御について、適応変復調・誤り訂正符号化 （AMC: Adaptive Modulation and channel Coding） が適用されるセルでの通信時のみ起動を行うことを特徴とする。 The activation control method for the receive diversity function of the present invention is activated only during communication in a cell to which adaptive modulation and channel correction (AMC) is applied for the activation control of the receive diversity function at the receiving terminal. It is characterized by performing.
本発明は受信ダイバーシチ技術を適用した端末において、適応変復調・誤り訂正符号化 （AMC: Adaptive Modulation and channel Coding） が適用されるセルでのみ起動を行うことで、端末での電力をいたずらに消費することなく、スループット特性を向上させることが可能となる。 The present invention consumes power at a terminal by applying activation only in a cell to which adaptive modulation and channel coding (AMC) is applied in a terminal to which reception diversity technology is applied. Thus, it is possible to improve the throughput characteristics.
以下、本発明に係る受信ダイバーシチ機能の起動制御方法の実施形態を図面に基づき説明する。なお、各図において、同一要素には同一符号を付して重複する説明を省略する。 DESCRIPTION OF EMBODIMENTS Hereinafter, an embodiment of a reception diversity function activation control method according to the present invention will be described with reference to the drawings. In addition, in each figure, the same code | symbol is attached | subjected to the same element and the overlapping description is abbreviate | omitted.
まず、移動機と基地局のデータ通信を行わない、待ち受け状態を考える。 First, consider a standby state in which data communication between a mobile station and a base station is not performed.
待ち受け状態の移動機は、共通パイロットチャネル（CPICH: Common Pilot Channel）、着信の有無を示すページングチャネル（PICH: Page Indicator Channel）、同期チャネル（SCH: Synchronization Channel）、第一共通制御チャネル（P-CCPCH: Primary Common Control Physical Channel）の受信のみを行っている。この状態では受信ダイバーシチの起動は行わない。 The mobile devices in the standby state include a common pilot channel (CPICH: Common Pilot Channel), a paging channel (PICH: Page Indicator Channel) indicating whether there is an incoming call, a synchronization channel (SCH: Synchronization Channel), a first common control channel (P- (CCPCH: Primary Common Control Physical Channel) only. In this state, reception diversity is not activated.
次に接続先基地局とパケット通信を行う際の手順を示す。 Next, the procedure for performing packet communication with the connection destination base station is shown.
(1)移動機は基地局へプリアンブル（preamble: ランダムアクセスチャネル送信前の事前信号）、ランダムアクセスチャネル（RACH: Random Access Channel）を順番に送信することで発呼・信号要求を行う。この後、基地局から送信される同期通知チャネル（AICH: Acquisition Indicator Channel）、第2共通制御チャネル（S-CCPCH: Secondary Common Control Channel）の受信を行う。 (1) The mobile station issues a call / signal request by sequentially transmitting a preamble (preamble signal before transmission of a random access channel) and a random access channel (RACH: Random Access Channel) to the base station. Thereafter, a synchronization notification channel (AICH: Acquisition Indicator Channel) and a second common control channel (S-CCPCH) transmitted from the base station are received.
(2)移動機は受信したS-CCPCHから接続先の基地局がAMC適用セルか非適用セルかを判別する。AMCが適用される場合には高速共通チャネル（HS-DSCH: High Speed Downlink Shared Channel）の、非適用の場合には個別チャネル（DPCH: Dedicated Physical Channel）の受信を行う。 (2) The mobile device determines from the received S-CCPCH whether the connected base station is an AMC application cell or a non-application cell. When AMC is applied, a high-speed common channel (HS-DSCH: High Speed Downlink Shared Channel) is received, and when not applied, a dedicated channel (DPCH: Dedicated Physical Channel) is received.
(3)パケットの受信がすべて完了した後、待ち受け状態へ戻る。 (3) After completing the reception of all packets, return to the standby state.
DPCHを用いたパケット送信が行われる場合、基地局からの送信電力制御により、移動機の受信品質は常に一定に保たれるため、ユーザから見ると受信ダイバーシチを適用するメリットはほとんどない。しかし、HS-DSCHを用いたパケット送信が行われる場合、AMC技術が適用されるため、受信ダイバーシチを適用することで、移動機のSIR（Signal to Interference power Ratio）が向上し、より高速なパケット通信が可能となる。 When packet transmission using DPCH is performed, the reception quality of the mobile device is always kept constant by transmission power control from the base station, so that there is almost no merit in applying reception diversity from the viewpoint of the user. However, when packet transmission using HS-DSCH is performed, since AMC technology is applied, SIR (Signal to Interference power Ratio) of the mobile station is improved by applying reception diversity, and higher-speed packets are transmitted. Communication is possible.
そこで、上述した手順(2)のS-CCPCHを受信した時点で受信ダイバーシチの起動制御を行う。S-CCPCHを受信した後、AMC適用セルであれば、受信ダイバーシチを適用し、AMCが非適用セルであれば、待ち受け状態と同じく受信ダイバーシチの起動を行わない。 Therefore, reception diversity activation control is performed when the S-CCPCH in the procedure (2) described above is received. After receiving the S-CCPCH, if the cell is an AMC application cell, reception diversity is applied. If the AMC is a non-application cell, reception diversity is not activated as in the standby state.
ただし、AMC適用セルから非適用セルへ移る場合（ハンドオーバ）には受信ダイバーシチの起動を切断してしまうと、ダイバーシチ合成ゲインが減少し、急激にSIRが劣化するため、基地局からの送信電力制御が追従できなくなるため、受信ダイバーシチを適用したままにする必要がある。 However, when moving from the AMC applied cell to the non-applied cell (handover), if the diversity activation is cut off, the diversity combining gain decreases and the SIR deteriorates rapidly. However, it is necessary to keep receiving diversity applied.
このような制御を行うことで、AMCの適用を行う高速パケット通信時のみ受信ダイバーシチの起動を行うことが可能となり、受信ダイバーシチの適用効果の小さい送信電力制御を行うパケット通信時に起動を制限することができる。したがって、ユーザは消費電力を抑えた受信ダイバーシチ搭載端末を使うことで、より高速なパケット通信が可能となる。 By performing such control, it is possible to activate reception diversity only during high-speed packet communication that applies AMC, and limit activation during packet communication that performs transmission power control with a small effect of application of reception diversity. Can do. Therefore, the user can perform higher-speed packet communication by using a reception diversity mounted terminal with reduced power consumption.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005016093A JP4652828B2 (en) | 2005-01-24 | 2005-01-24 | Start-up control method for receive diversity function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005016093A JP4652828B2 (en) | 2005-01-24 | 2005-01-24 | Start-up control method for receive diversity function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2006203820A true JP2006203820A (en) | 2006-08-03 |
| JP4652828B2 JP4652828B2 (en) | 2011-03-16 |
Family
ID=36961388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2005016093A Expired - Fee Related JP4652828B2 (en) | 2005-01-24 | 2005-01-24 | Start-up control method for receive diversity function |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4652828B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013068203A3 (en) * | 2011-11-10 | 2013-06-27 | Intel Mobile Communications GmbH | Communication terminals and methods for controlling a receiver of a communication terminal |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003504957A (en) * | 1999-07-07 | 2003-02-04 | テレフオンアクチーボラゲット エル エム エリクソン（パブル） | Controlled antenna diversity |
| WO2003085876A1 (en) * | 2002-04-01 | 2003-10-16 | Intel Corporation | A system and method of dynamically optimizing a transmission mode of wirelessly transmitted information |
| JP2003304569A (en) * | 2002-04-11 | 2003-10-24 | Toshiba Corp | Hand-off method, and mobile terminal |
| WO2005002111A2 (en) * | 2003-06-10 | 2005-01-06 | Motorola Inc. | Diversity control in wireless communications devices and methods |
-
2005
- 2005-01-24 JP JP2005016093A patent/JP4652828B2/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003504957A (en) * | 1999-07-07 | 2003-02-04 | テレフオンアクチーボラゲット エル エム エリクソン（パブル） | Controlled antenna diversity |
| WO2003085876A1 (en) * | 2002-04-01 | 2003-10-16 | Intel Corporation | A system and method of dynamically optimizing a transmission mode of wirelessly transmitted information |
| JP2003304569A (en) * | 2002-04-11 | 2003-10-24 | Toshiba Corp | Hand-off method, and mobile terminal |
| WO2005002111A2 (en) * | 2003-06-10 | 2005-01-06 | Motorola Inc. | Diversity control in wireless communications devices and methods |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013068203A3 (en) * | 2011-11-10 | 2013-06-27 | Intel Mobile Communications GmbH | Communication terminals and methods for controlling a receiver of a communication terminal |
| US8855706B2 (en) | 2011-11-10 | 2014-10-07 | Intel Mobile Communications GmbH | Communication terminals and methods for controlling a receiver of a communication terminal |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4652828B2 (en) | 2011-03-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11350363B2 (en) | Wake-up radio technique | |
| JP4485687B2 (en) | Reservation multiple access method | |
| EP1992125B1 (en) | Individual and group identifiers for user equipment in wireless systems with a shared data channel | |
| US8676149B2 (en) | Prolonging internal power supply life in a mobile communication device | |
| EP1793638B1 (en) | Reservation multiple access | |
| WO2013151787A1 (en) | Methods and apparatus for parameter adjustment | |
| KR20110020151A (en) | Method for transmitting channel quality indicator | |
| JP2010081622A (en) | Method and apparatus for reverse link supplemental channel scheduling | |
| US7978664B2 (en) | Method for modem switching for use with MM-MB terminal | |
| US20090011714A1 (en) | Communication apparatus and method for controlling diversity reception | |
| TW201204115A (en) | Method and apparatus to improve idle mode power consumption in multiple USIM configuration | |
| JP2019195194A (en) | Method and device in cellular communication system | |
| EP1555767B1 (en) | Antenna-switching diversity receiver capable of switching antennas for CDMA communication | |
| WO2006112329A1 (en) | Wireless communication control system, radio base station and wireless communication control method | |
| US20100165853A1 (en) | Mobile station, base station and radio channel condition reporting method | |
| US9872261B2 (en) | Method and apparatus for improving synchronization shift command transmission efficiency in TD-SCDMA uplink synchronization | |
| US6745035B2 (en) | Communication terminal apparatus and transmission method of information necessary for communication using a downlink shared channel (DSCH) | |
| WO2016122394A1 (en) | Method for enhancing the uplink performance of coverage-limited devices | |
| JP4978472B2 (en) | Radio resource configuration method in mobile communication network | |
| AU2004248703B2 (en) | Power control for a mobile radio communication system | |
| JP4652828B2 (en) | Start-up control method for receive diversity function | |
| WO2004013987A1 (en) | Method of power control for high speed data communication channels in case of soft handover | |
| Haardt et al. | The physical layer of UTRA TDD | |
| TW201136367A (en) | Common channel configuration to facilitate measurement for handover in TD-SCDMA systems | |
| Shah | Portable broadband Internet access: system and services |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20071003 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20100204 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20100209 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20100409 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20101214 |
|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20101216 |
|
| R150 | Certificate of patent or registration of utility model |
Ref document number: 4652828 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20131224 Year of fee payment: 3 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |