JPH11122210A - Digital radio communication equipment - Google Patents
Digital radio communication equipmentInfo
- Publication number
- JPH11122210A JPH11122210A JP9297759A JP29775997A JPH11122210A JP H11122210 A JPH11122210 A JP H11122210A JP 9297759 A JP9297759 A JP 9297759A JP 29775997 A JP29775997 A JP 29775997A JP H11122210 A JPH11122210 A JP H11122210A
- Authority
- JP
- Japan
- Prior art keywords
- slot
- transmission
- data
- reception
- slots
- 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.)
- Pending
Links
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
- Time-Division Multiplex Systems (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明はデジタル無線通信装
置、特にＴＤＭＡ（time division multipleaccess）／
ＴＤＤ（time division duplex）方式のデジタル無線通
信装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital radio communication apparatus, in particular, to a TDMA (time division multiple access) /
The present invention relates to a digital wireless communication device of a TDD (time division duplex) system.
【０００２】[0002]
【従来の技術】現在ＰＨＳ（Personal Handyphone Syst
em）は急速に普及している。このＰＨＳは１９９５年よ
りサービスを開始した新世代のデジタル携帯通信システ
ムであり、家庭用の電話機と携帯電話機とを共用するこ
とができる。携帯電話と異なり、基地局がカバーする領
域は半径数１００メートルまでと狭いため、電波出力が
小さくてすむという利点を有する。その為に端末装置の
小型軽量化が可能になる。尚、携帯電話用基地局のカバ
ー領域は半径１.５乃至数kmと比較的大きい。2. Description of the Related Art At present, PHS (Personal Handyphone Syst.
em) is rapidly spreading. The PHS is a new-generation digital mobile communication system that started its service in 1995, and can share a home telephone and a mobile telephone. Unlike a mobile phone, the area covered by a base station is as narrow as a few hundred meters in radius, and thus has the advantage of requiring only a small radio output. Therefore, the size and weight of the terminal device can be reduced. The coverage area of the mobile phone base station is relatively large with a radius of 1.5 to several kilometers.
【０００３】かかるＰＨＳにおいては、現在３２ kbit
／sのデジタルデータ通信が実用化されており、６４ kb
it／sのデジタルデータ通信も規格化される予定であ
る。[0003] In such a PHS, currently 32 kbit
/ S digital data communication has been put into practical use, and 64 kb
It / s digital data communication will also be standardized.
【０００４】図３は、従来のデジタル無線通信装置にお
けるスロット構成を示す。（ａ）は、３２ kbit／sの転
送速度での送信スロットを示し、特に各フレームの第一
スロットを使用して送信する場合の例を示す。（ｂ）
は、（ａ）と同様に３２ kbit／s時の受信スロットを示
し、特に第１受信スロット使用時の例を示す。また、
（ｃ）は、６４ kbit／s時の送信スロットを示し、送信
第１及び第３スロット使用時の例を示す。（ｄ）は、６
４ kbit／s時の受信スロットを示し、特に送信弟１及び
第３スロット使用時の例を示す。FIG. 3 shows a slot configuration in a conventional digital radio communication apparatus. (A) shows a transmission slot at a transfer rate of 32 kbit / s, and particularly shows an example in which transmission is performed using the first slot of each frame. (B)
Indicates a reception slot at 32 kbit / s as in (a), and particularly shows an example when the first reception slot is used. Also,
(C) shows a transmission slot at the time of 64 kbit / s, and shows an example when the first and third transmission slots are used. (D) is 6
The figure shows a reception slot at 4 kbit / s, and particularly shows an example when the first and third slots are used.
【０００５】図３（ａ）乃至（ｄ）のスロット構成図か
ら明らかな如く、従来のスロット構成は、データの上り
・下り（送受信）を同じデータ転送速度でデータの送受
信が行える全２重方式となっている。As is clear from the slot configuration diagrams of FIGS. 3 (a) to 3 (d), the conventional slot configuration employs a full duplex system in which data transmission / reception (up / down) can be performed at the same data transfer rate. It has become.
【０００６】[0006]
【発明が解決しようとする課題】上述した如き従来のデ
ジタル無線通信装置にあっては、音声通話には適してい
る。しかし、データ通信時には、一般に上りと下りのデ
ータ量が同一でないために効率が悪いという問題があっ
た。The conventional digital wireless communication apparatus as described above is suitable for voice communication. However, at the time of data communication, there has been a problem that efficiency is poor because the amount of uplink and downlink data is generally not the same.
【０００７】そこで、本発明の目的は、上述した従来技
術の欠点乃至課題を解決することであって、データ通信
時の転送効率を改善するデジタル無線通信装置を提供す
ることにある。It is an object of the present invention to solve the above-mentioned drawbacks or problems of the prior art, and to provide a digital wireless communication apparatus which improves transfer efficiency during data communication.
【０００８】[0008]
【課題を解決するための手段】前述の課題を解決するた
め、本発明によるデジタル無線通信装置は、１フレーム
中に複数の送信スロット及び受信スロットを有するデジ
タル無線通信装置において、送信すべきデータが少ない
か存在しないことを検出し、送信スロットの少なくとも
一部を受信スロットに振り替え、受信データの転送速度
を改善するように構成される。In order to solve the above-mentioned problems, a digital radio communication apparatus according to the present invention is a digital radio communication apparatus having a plurality of transmission slots and reception slots in one frame. It is configured to detect that the number is small or absent, transfer at least a part of the transmission slot to the reception slot, and improve the transfer rate of the reception data.
【０００９】ここで、ＰＨＳ方式の移動端末を使用し、
ＴＤＭＡ／ＴＤＤ方式を採用することができる。また、
送信すべきデータの有無検出結果を付随制御チャネルを
用いて接続装置側に報告し、送信データがないときに
は、当該スロットの送信を停止するように構成される。Here, using a mobile terminal of the PHS system,
The TDMA / TDD scheme can be adopted. Also,
The detection result of the presence / absence of data to be transmitted is reported to the connection device using the associated control channel, and when there is no transmission data, the transmission of the slot is stopped.
【００１０】[0010]
【発明の実施の形態】以下、本発明のデジタル無線通信
装置の好適実施形態を添付図、特に図１及び図２を参照
して詳細に説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a digital radio communication apparatus according to the present invention will be described below in detail with reference to the accompanying drawings, particularly FIGS.
【００１１】図１は、本発明のデジタル無線通信装置の
第１実施形態のスロット構成図を示し、図２は本発明の
第２実施形態のスロット構成図を示す。FIG. 1 shows a slot configuration diagram of a first embodiment of a digital radio communication apparatus of the present invention, and FIG. 2 shows a slot configuration diagram of a second embodiment of the present invention.
【００１２】先ず、図１を参照して説明する。図１
（ａ）は、６４ kbit／s転送時の送信スロット（上り）
を示し、図１（ｂ）は、６４ kbit／s転送時の受信スロ
ット（下り）を示す。第１スロットを常時送信用に使用
し、送信データが少ないときは、第３スロットの送信ス
ロットを受信スロットに振り替える。即ち、第１フレー
ムで移動通信端末側の送信データ（上り）の有無を検出
する。このフレームで送信データが無いときは、次フレ
ームの送信スロット（上り）の一部を受信スロット（下
り）に割り当てる。First, a description will be given with reference to FIG. FIG.
(A) is a transmission slot (up) at the time of 64 kbit / s transfer.
FIG. 1B shows a reception slot (downlink) at the time of 64 kbit / s transfer. When the first slot is always used for transmission and the amount of transmission data is small, the third slot transmission slot is switched to the reception slot. That is, the presence or absence of transmission data (uplink) on the mobile communication terminal side is detected in the first frame. If there is no transmission data in this frame, a part of the transmission slot (uplink) of the next frame is allocated to the reception slot (downlink).
【００１３】次に、移動通信端末側は、送信データが無
く、次スロットの送信スロット（上り）を受信スロット
（下り）に割り当てることを付随制御チャンネル等を使
用して接続装置側に報告する。この報告を受けた接続装
置側は、指定されたスロットを受信スロット（下り）に
設定してデータ転送を行う。Next, the mobile communication terminal reports to the connection device side that there is no transmission data and that the transmission slot (uplink) of the next slot is to be allocated to the reception slot (downlink), using an associated control channel or the like. The connection device that has received this report sets the designated slot as a reception slot (downlink) and performs data transfer.
【００１４】上述構成において、インターネット接続に
よるｗｗｗ（world wide web）の閲覧を行うときや、フ
ァイルのダウンロードを行う場合には、端末側から見て
受信データが大半であり、送信データが少ない状態とな
り易い。このような状態のときには、図３に示すような
従来のスロット構成では送信スロットに有効なデータが
含まれない所謂アイドルスロットが多数発生するので、
転送効率が悪い。In the above configuration, when browsing a www (world wide web) through an Internet connection or when downloading a file, most of the received data is viewed from the terminal side, and the transmitted data is small. easy. In such a state, in the conventional slot configuration as shown in FIG. 3, a large number of so-called idle slots in which valid data are not included in the transmission slot occur.
Poor transfer efficiency.
【００１５】そこで、図１に示す本発明のデジタル無線
通信装置にあっては、送信アイドルスロット（図１
（ａ）中に斜線（ハッチング）を施したスロット）を受
信スロットに振り替える。これにより、インターネット
アクセス時の受信データの転送速度の改善が期待でき
る。換言すれば、無駄なアイドルスロットが減少する為
に周波数の有効利用が図れることとなる。また、仮に端
末側で受信スロットに振り替えたスロットにデータがな
くても（即ち、アイドルスロットであっても）、電池で
駆動される割合が高い移動端末の送信時間が減少するの
で、通信可能時間が延長可能であるという効果がある。Therefore, in the digital radio communication apparatus of the present invention shown in FIG.
(A) Slots (hatched slots) are transferred to reception slots. As a result, an improvement in the transfer speed of the received data at the time of accessing the Internet can be expected. In other words, effective use of frequency can be achieved because unnecessary idle slots are reduced. Even if there is no data in the slot switched to the receiving slot on the terminal side (that is, even if the slot is an idle slot), the transmission time of the mobile terminal that is highly driven by the battery decreases, so that the communicable time is reduced. Has the effect that it can be extended.
【００１６】次に、図２を参照して簡単に説明する。送
信データが図１の場合より更に少ない場合には、第１及
び第３送信スロット共に、通信の維持に必要な最小限の
スロットを残して送信を停止する。必要に応じてこれら
スロットは受信スロットとして利用することも可能であ
る。Next, a brief description will be given with reference to FIG. When the transmission data is smaller than that in the case of FIG. 1, the transmission is stopped except for the first and third transmission slots, which are the minimum slots necessary for maintaining the communication. These slots can be used as reception slots if necessary.
【００１７】以上、本発明のデジタル無線通信装置の好
適実施例を説明したが、本発明はこれら特定実施例のみ
に限定されるべきでないことは勿論である。Although the preferred embodiments of the digital radio communication apparatus according to the present invention have been described above, it is needless to say that the present invention should not be limited to only these specific embodiments.
【００１８】[0018]
【発明の効果】以上説明説明したように、従来各フレー
ムを送信スロットと受信スロットとに分離固定したのに
対し、本発明では送信すべきデータがないとき、これを
検知して送信スロットの少なくとも一部を受信スロット
に振り替えている。従って、受信データの転送速度の改
善と移動通信端末側の消費電力の低減が実現できる。そ
こで、インターネットアクセス時等のように、移動通信
端末側の送信データより、受信データの量が十分多い場
合には特に顕著な効果が期待できる。As described above, while each frame is conventionally separated and fixed into a transmission slot and a reception slot, according to the present invention, when there is no data to be transmitted, this is detected and at least the transmission slot is detected. Some are transferred to reception slots. Therefore, it is possible to improve the transfer speed of the received data and reduce the power consumption of the mobile communication terminal. In particular, a remarkable effect can be expected when the amount of received data is sufficiently larger than the amount of transmitted data on the mobile communication terminal side, such as when accessing the Internet.
【図１】本発明の第１実施形態のデジタル無線通信装置
のスロット構成図である。FIG. 1 is a slot configuration diagram of a digital wireless communication apparatus according to a first embodiment of the present invention.
【図２】本発明の第２実施形態のデジタル無線通信装置
のスロット構成図である。FIG. 2 is a diagram illustrating a slot configuration of a digital wireless communication apparatus according to a second embodiment of the present invention.
【図３】従来のデジタル無線通信装置におけるスロット
構成を示す図である。FIG. 3 is a diagram showing a slot configuration in a conventional digital wireless communication device.
Claims (5)
信スロットを有するデジタル無線通信装置において、 送信すべきデータが少ないか存在しないことを検出し、
送信スロットの少なくとも一部を受信スロットに振り替
え、受信データの転送速度を改善することを特徴とする
デジタル無線通信装置。1. A digital radio communication apparatus having a plurality of transmission slots and reception slots in one frame, detecting that there is little or no data to be transmitted,
A digital wireless communication device wherein at least a part of a transmission slot is transferred to a reception slot to improve a transfer rate of received data.
徴とする請求項１に記載のデジタル無線通信装置。2. The digital radio communication apparatus according to claim 1, wherein a PHS mobile terminal is used.
徴とする請求項１又は２に記載のデジタル無線通信装
置。3. The digital wireless communication apparatus according to claim 1, wherein a TDMA / TDD system is adopted.
御チャネルを用いて接続装置側に報告し、送信データが
ないときには、当該スロットの送信を停止することを特
徴とする請求項１，２又は３に記載のデジタル無線通信
装置。4. The transmission apparatus according to claim 1, wherein the result of the detection of the presence / absence of data to be transmitted is reported to the connection device using the associated control channel, and when there is no transmission data, transmission of the slot is stopped. Or the digital wireless communication device according to 3.
チャンネルを用いて接続装置側へ報告することを特徴と
する請求項１乃至４に記載のいずれかのデジタル無線通
信装置。5. The digital wireless communication apparatus according to claim 1, wherein the result of detecting the presence / absence of data to be transmitted is reported to the connection apparatus using a control channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9297759A JPH11122210A (en) | 1997-10-15 | 1997-10-15 | Digital radio communication equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9297759A JPH11122210A (en) | 1997-10-15 | 1997-10-15 | Digital radio communication equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11122210A true JPH11122210A (en) | 1999-04-30 |
Family
ID=17850813
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9297759A Pending JPH11122210A (en) | 1997-10-15 | 1997-10-15 | Digital radio communication equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11122210A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000074291A1 (en) * | 1999-05-29 | 2000-12-07 | Samsung Electronics Co., Ltd. | Apparatus and method for gated transmission in cdma communication system |
| KR100374336B1 (en) * | 1999-04-12 | 2003-03-04 | 삼성전자주식회사 | Apparatus and method for gated transmission in a cdma communications system |
-
1997
- 1997-10-15 JP JP9297759A patent/JPH11122210A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100374336B1 (en) * | 1999-04-12 | 2003-03-04 | 삼성전자주식회사 | Apparatus and method for gated transmission in a cdma communications system |
| WO2000074291A1 (en) * | 1999-05-29 | 2000-12-07 | Samsung Electronics Co., Ltd. | Apparatus and method for gated transmission in cdma communication system |
| AU766485B2 (en) * | 1999-05-29 | 2003-10-16 | Samsung Electronics Co., Ltd. | Apparatus and method for gated transmission in CDMA communication system |
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