JPH04145733A - In-zone communication system in mobile communication - Google Patents
In-zone communication system in mobile communicationInfo
- Publication number
- JPH04145733A JPH04145733A JP2270219A JP27021990A JPH04145733A JP H04145733 A JPH04145733 A JP H04145733A JP 2270219 A JP2270219 A JP 2270219A JP 27021990 A JP27021990 A JP 27021990A JP H04145733 A JPH04145733 A JP H04145733A
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- 238000004891 communication Methods 0.000 title claims abstract description 37
- 238000010295 mobile communication Methods 0.000 title claims description 6
- VYMDGNCVAMGZFE-UHFFFAOYSA-N phenylbutazonum Chemical compound O=C1C(CCCC)C(=O)N(C=2C=CC=CC=2)N1C1=CC=CC=C1 VYMDGNCVAMGZFE-UHFFFAOYSA-N 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は移動通信におけるゾーン内通信方式に係り、特
に固定局と移動局とが同一周波数で２以上のチャネルに
時分割され、さらに、時分割により上り信号および下り
信号を送受信して互いに通信を行う時分割多重移動通信
方式において、固定局が管理する無線ゾーン内で移動局
が通信を行う移動通信におけるゾーン内通信方式に関す
る。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an intra-zone communication system in mobile communications, and in particular, when a fixed station and a mobile station are time-divided into two or more channels using the same frequency, and The present invention relates to an intra-zone communication method in mobile communication in which a mobile station communicates within a radio zone managed by a fixed station in a time division multiplex mobile communication method in which uplink signals and downlink signals are transmitted and received by division to communicate with each other.
第５図は従来方式によるシステム構成と制御チャネルの
使用動作を示す。FIG. 5 shows the system configuration and operation of using control channels according to the conventional method.
同図は４チヤネルの時分割多重通信方式を示している。The figure shows a four-channel time division multiplex communication system.
信号バーストはある決められた一定時間に、上り信号バ
ーストか上りタイムスロットｔｌ（ＣＨＩを使用）に移
動局５３から固定局５１に向けて送出され、また、下り
信号バーストか下りタイムスロットｔ２（ＣＨ２を使用
）に固定局５１から移動局５３に送出される。A signal burst is transmitted from the mobile station 53 to the fixed station 51 at a certain predetermined time, either as an uplink signal burst or as an uplink time slot tl (using CHI), and as a downlink signal burst or as a downlink time slot t2 (CH2 is used). is sent from the fixed station 51 to the mobile station 53.
第６図は従来方式によるシステム構成と通話チャネルの
使用動作を示す。同図中、第５図と同一構成部分には同
一符号を付す。同図は固定局５１のゾーン内に２つの移
動局が在圏している。FIG. 6 shows the system configuration and communication channel usage operations according to the conventional system. In the figure, the same components as in FIG. 5 are given the same reference numerals. In the figure, two mobile stations are located within the zone of a fixed station 51.
この２つの移動局が互いに通信を行う場合について説明
する。A case where these two mobile stations communicate with each other will be explained.
２つの移動局５３．５５は発呼移動局５３と着呼移動局
５５である。固定局５１と発呼移動局５３は、同−周波
数ｆｌ、同一チャネル（ＣＨｌ）の定められた上りタイ
ムスロットｔ１及び、下りタイムスロットｔ４に通信を
行い、且つ固定局５１は着呼移動局５５との通信には同
一周波数ｆＬ他チャネル（ＣＨ２）を割り当て、発呼移
動局５３との通信とは異なる上りタイムスロットｔ３、
下りタイムスロットｔ２を使用して通信を行う。The two mobile stations 53,55 are a calling mobile station 53 and a called mobile station 55. The fixed station 51 and the calling mobile station 53 communicate in the uplink time slot t1 and the downlink time slot t4 on the same frequency fl and the same channel (CHl), and the fixed station 51 communicates with the called mobile station 55. The same frequency fL other channel (CH2) is assigned to the communication with the calling mobile station 53, and the uplink time slot t3 is different from that of the communication with the calling mobile station 53.
Communication is performed using the downlink time slot t2.
第７図は従来方式を用いたシーケンスを示す。FIG. 7 shows a sequence using the conventional method.
発呼移動局５３の発呼信号１２か固定局５１に送信され
ると、固定局５１は通信チャネルの空きがあり、且つ着
呼移動局５５か無通信中であれば、着呼移動局５５に呼
出信号１３を送信する。また、固定局５１が着呼移動局
５５を呼び出している闇は固定局５１は同時に発呼移動
局５３に対して応答信号１４を送信する。When the calling signal 12 of the calling mobile station 53 is transmitted to the fixed station 51, the fixed station 51 transmits the call to the called mobile station 55 if there is a free communication channel and if the called mobile station 55 is not communicating. The call signal 13 is sent to Furthermore, when the fixed station 51 is calling the called mobile station 55, the fixed station 51 simultaneously transmits a response signal 14 to the calling mobile station 53.
次に固定局５１は着呼移動局５５から応答信号１５か送
信されると、発呼移動局５３と着呼移動局５５にそれぞ
れ通信チャネルの指定１６及び１７を行う。発呼移動局
５３と着呼移動局５５は固定局５１を介して、発呼移動
局５３と固定局５１の間では上り信号１８と下り信号２
０により、また、固定局５１と着呼移動局５５との間で
は下り信号１９と上り信号２１により通信か行われる。Next, when fixed station 51 receives response signal 15 from called mobile station 55, it specifies communication channels 16 and 17 to calling mobile station 53 and called mobile station 55, respectively. The calling mobile station 53 and the called mobile station 55 transmit an uplink signal 18 and a downlink signal 2 between the calling mobile station 53 and the fixed station 51 via the fixed station 51.
Furthermore, communication is performed between the fixed station 51 and the called mobile station 55 using the downlink signal 19 and uplink signal 21.
このように、固定局５１のゾーン内に存在する２つの移
動局か互いに通信を行う場合、２つのチャネルに異なる
上りタイムスロット及び、下りタイムスロットを使用す
る。In this way, when two mobile stations existing within the zone of the fixed station 51 communicate with each other, different uplink and downlink time slots are used for the two channels.
しかるに、固定局５１のゾーン内に存在する発呼移動局
５３と着呼移動局５５の２つの移動局か互いに通信を行
う場合、ゾーン内での２つの移動局の位置が近接してお
り、十分に送受信できる強度の信号レベルを保持してい
て、固定局５１を中継せずに通信が可能な状態であって
も、異なるチャネルの異なる上りタイムスロット及び、
下りタイムスロットを使用し、通信を行うため、当該固
定局のゾーン内に存在する多数の移動局が互いに通信を
行う場合は、固定局５１が割り当てるべきチャネル数が
不足し、新たに固定局５１を設置しなければならないと
いう問題があった。However, when two mobile stations, the calling mobile station 53 and the called mobile station 55, existing within the zone of the fixed station 51 communicate with each other, the positions of the two mobile stations within the zone are close to each other. Even if the signal level is strong enough for transmission and reception and communication is possible without relaying through the fixed station 51, different uplink time slots of different channels and
Because downlink time slots are used for communication, when a large number of mobile stations existing within the zone of the fixed station communicate with each other, the number of channels to be allocated by the fixed station 51 is insufficient, and the fixed station 51 is newly allocated. The problem was that it had to be installed.
本発明は上記の点に鑑みなされたもので固定局５１を中
継しないて発呼移動局５３と着呼移動局５５の間で通信
できる移動通信におけるゾーン内通信方式を提供するこ
とを目的とする。The present invention has been made in view of the above points, and it is an object of the present invention to provide an intra-zone communication system in mobile communications that allows communication between a calling mobile station 53 and a called mobile station 55 without relaying through a fixed station 51. .
第１図は本発明の原理説明図を示す。固定局１０１と移
動局１０５．１０６か同一周波数で２以上のチャネルに
時分割され、さらに時分割により上り信号及び、下り信
号を送受信して互いに通信を行う時分割多重通信方式に
おいて、固定局１０１のゾーン１０３内に存在する発呼
移動局１０５と着呼移動局１０６間で通信を行う場合、
固定局１０１は発呼移動局１０５の呼田信号により、発
呼移動局１０５及び着呼移動局１０６に同一周波数及び
、同一チャネルを夫々割り当て、発呼移動局１０５は割
り当てられたチャネルの上りタイムスロットと下り夕・
イムスロットを入れ替えて、着呼移動局１０６からの上
り信号を待ち、固定局１０１はチャネルでの送信を停止
すると同時に、着呼移動局１０６からの上り信号及び通
信を監視し、着呼移動局１０６の上り信号が発呼移動局
１０５て受信されると、発呼移動局１０５と着呼移動局
１０６て通信を開始する。FIG. 1 shows a diagram explaining the principle of the present invention. In a time division multiplex communication system, the fixed station 101 and the mobile stations 105 and 106 are time-divided into two or more channels using the same frequency, and further transmit and receive uplink signals and downlink signals by time division to communicate with each other. When communicating between the calling mobile station 105 and the called mobile station 106 existing in the zone 103 of
The fixed station 101 allocates the same frequency and the same channel to the calling mobile station 105 and the called mobile station 106 according to the call signal from the calling mobile station 105, and the calling mobile station 105 uses the uplink time of the assigned channel. Slot and downhill evening・
The fixed station 101 switches time slots and waits for an uplink signal from the called mobile station 106, and then stops transmitting on the channel.At the same time, the fixed station 101 monitors the uplink signal and communication from the called mobile station 106, and When the uplink signal of 106 is received by the calling mobile station 105, the calling mobile station 105 and the called mobile station 106 start communication.
本発明は固定局１０１のゾーン１０３内に在圏する発呼
移動局１０５と着呼移動局１０６とか通信を行うとき、
発呼移動局１０５が固定局１０１て割り当てられたチャ
ネルの上りタイムスロットと下りタイムスロットを入れ
替え、固定局１０１は発着呼移動局１０５に割り当てた
チャネルでの送信を停止し、発呼移動局１０５と着呼移
動局１０６とか固定局１０１を介在せずに通信できるよ
うにする。また、固定局１０１は両移動局間かある一定
時間が経過しても通信していない場合には同ゾーン１０
３内であっても移動局間の距離かかなり離れていると判
断し、当該固定局１０１は着呼移動局１０６に対して新
たに異なるチャネルを割り当て両移動局が通信てきるよ
うにする。According to the present invention, when a calling mobile station 105 and a called mobile station 106 located within a zone 103 of a fixed station 101 communicate,
The calling mobile station 105 switches the uplink and downlink time slots of the channel assigned to the fixed station 101, the fixed station 101 stops transmitting on the channel assigned to the calling mobile station 105, and the calling mobile station 105 It is possible to communicate with the called mobile station 106 or the fixed station 101 without intervening. In addition, if the fixed station 101 is not communicating between both mobile stations or even after a certain period of time has passed, the fixed station 101
3, the fixed station 101 determines that the distance between the mobile stations is quite far, and allocates a new different channel to the called mobile station 106 so that both mobile stations can communicate.
第２図は本発明の一実施例のシステム構成と制御チャネ
ルの動作を示す。同図中、第６図と同一構成部分には同
一符号を付す。第２図は固定局５１と移動局５３．５５
か同一周波数ｆｌで４チヤネルに時分割され、さらに時
分割により上り信号ｔ２．及び下り信号ｔ１を送受信し
て互いに通信を行う時分割多重通信方式の例を説明する
。FIG. 2 shows the system configuration and operation of a control channel according to an embodiment of the present invention. In the figure, the same components as in FIG. 6 are given the same reference numerals. Figure 2 shows a fixed station 51 and a mobile station 53.55.
are time-divisionally divided into four channels at the same frequency fl, and further time-divisionally outputs upstream signals t2. An example of a time division multiplex communication system in which communication is performed by transmitting and receiving the downlink signal t1 and the downlink signal t1 will be described.
第３図は本発明の一実施例のシステム構成と通信チャネ
ルの使用動作を示す。先ず、第３図ては発呼移動局５３
は制御周波数ｆＯ（ＣＨＩ）により固定局５１に対して
着呼移動局５５への呼出信号を送出する。FIG. 3 shows the system configuration and operation of using communication channels in an embodiment of the present invention. First, in FIG. 3, the calling mobile station 53
sends a paging signal to the called mobile station 55 to the fixed station 51 using the control frequency fO (CHI).
固定局５１は制御周波数ｆＯ（ＣＨ２）により着呼移動
局５５に発呼移動局５３から呼び出しがあった旨を送出
する。さらに、発呼移動局５３と着呼移動局５５に同一
周波数ｆｌ及び、同一の上りタイムスロットと下りタイ
ムスロットをＣＨＩに割り当てる。発呼移動局５３は固
定局５１て割り当てられた上りタイムスロットと下りタ
イムスロットとを入れ替えて、着呼移動局５５からの上
り信号を待つ。固定局５１は着呼移動局５５に割り当て
たチャネルで送信を停止すると同時に着呼移動局５５か
らの上り信号及び通信を監視する。The fixed station 51 sends a notification to the called mobile station 55 that there is a call from the calling mobile station 53 using the control frequency fO (CH2). Furthermore, the same frequency fl and the same uplink and downlink time slots are assigned to the CHI to the calling mobile station 53 and the called mobile station 55. The calling mobile station 53 switches the uplink and downlink time slots assigned by the fixed station 51 and waits for an uplink signal from the called mobile station 55. The fixed station 51 stops transmission on the channel assigned to the called mobile station 55, and at the same time monitors uplink signals and communications from the called mobile station 55.
着呼移動局５５の上り信号か発呼移動局５３て受信され
ると、発呼移動局５３と着呼移動局５５の間て通信が開
始される。When the uplink signal of the called mobile station 55 is received by the calling mobile station 53, communication is started between the calling mobile station 53 and the called mobile station 55.
上記を第４図に示すシーケンスの例で示す。発呼移動局
５３の発呼信号２２が固定局５１に送出されると固定局
５１は着呼移動局５５に呼出信号２３を送出する。The above is illustrated using an example sequence shown in FIG. When the calling signal 22 of the calling mobile station 53 is sent to the fixed station 51, the fixed station 51 sends the calling signal 23 to the called mobile station 55.
固定局５１が着呼移動局５５を呼び出している間は固定
局５１より発呼移動局５３に応答信号２４を送出する。While the fixed station 51 is calling the called mobile station 55, the fixed station 51 sends a response signal 24 to the calling mobile station 53.
固定局５１が着呼移動局５５からの応答信号２５を受信
すると、発呼移動局５３に通信チャネルの指定２６を行
い、着呼移動局５５には通信チャネル指定２７を行う。When the fixed station 51 receives the response signal 25 from the called mobile station 55, it specifies a communication channel 26 to the calling mobile station 53, and specifies a communication channel 27 to the called mobile station 55.
これにより発呼移動局５３と着呼移動局５５は固定局５
１を中継せず、上り信号２８及び下り信号２９により通
信か行われる。As a result, the calling mobile station 53 and the called mobile station 55 are connected to the fixed station 5.
1 is not relayed, and communication is performed using an up signal 28 and a down signal 29.
また、固定局５１に該当するゾーン内であっても発呼移
動局５３と着呼移動局５５かゾーンの対角線の頂点間は
と遠隔に位置していた場合には、信号か直接移動局間で
届かない場合かある。このような時は着呼移動局５５の
上り信号２８か発呼移動局５３で受信されない状態とな
る。Furthermore, even within the zone corresponding to the fixed station 51, if the calling mobile station 53 and the called mobile station 55 are located far apart from each other on the diagonal line of the zone, the signal may be directly connected between the mobile stations. There may be cases where it does not arrive. In such a case, the uplink signal 28 of the called mobile station 55 is not received by the calling mobile station 53.
この場合、発呼移動局５３固定局５１に割り当てられた
上りタイムスロットと下りタイムスロットを再度入れ替
える。固定局５Ｉは上記のチャネルでの送信を再開する
。これは第５図に示したような方式を用いたシステム構
成のように、固定局５１か着呼移動局５５に対して新た
に異なる周波数または、異なるタイムスロットのチャネ
ルを割り当て、発呼移動局５３と着呼移動局５５か相互
に通信を行う。In this case, the uplink and downlink time slots assigned to the calling mobile station 53 and the fixed station 51 are switched again. Fixed station 5I resumes transmission on the above channel. This is a system configuration using the system shown in FIG. 53 and the called mobile station 55 communicate with each other.
終話時には、固定局５１て上り信号及び、通信を監視し
ているので、通常は着呼移動局５５から発呼移動局５３
に対して送信された終話信号を固定局５１か受信するこ
とにより、終話を検出し、上記で割り当てられたチャネ
ル（ＣＨＩ）を開放する。At the end of a call, the fixed station 51 monitors the uplink signal and communication, so normally the calling mobile station 55 is connected to the calling mobile station 53.
When the fixed station 51 receives the call termination signal transmitted to the fixed station 51, the end of the call is detected and the channel (CHI) allocated above is released.
また、着呼移動局５５かゾーン外に移動した等の理由に
より、終話信号を受信できないときには、固定局５１が
監視しているチャネル（ＣＨＩ）の受信レベルが低下し
たことにより終話を検出して、割り当てチャネルを開放
する。In addition, if the called mobile station 55 cannot receive the end of call signal due to movement outside the zone, etc., the end of the call is detected because the reception level of the channel (CHI) monitored by the fixed station 51 has decreased. to release the allocated channel.
上記により同一のゾーン内に在圏している移動局間の場
合には受信レベルが高いので発呼の都度固定局を中継せ
ずに移動局間で通信できる。As described above, since the reception level is high between mobile stations located in the same zone, communication between the mobile stations is possible without relaying to a fixed station each time a call is made.
また、着呼先の移動局が遠隔に位置していた場合に発呼
側からの信号が届かない場合のみ固定局を中継すること
により通信か行われる。Further, when the called mobile station is located far away, communication is performed by relaying the fixed station only when the signal from the calling side cannot be received.
上述の如く本発明によれば固定局を中継しないて発呼移
動局が上りタイムスロットと下りタイムスロットを入れ
替えて、着呼移動局と同一周波数の同一タイムスロット
を使用して通信することにより、特にゾーンに在圏する
多数の移動局か使用する場合には固定局が有するチャネ
ルが有効に利用できるので多くの固定局を設置する必要
かなく、極めて有用である。As described above, according to the present invention, the calling mobile station exchanges the uplink and downlink time slots and communicates with the called mobile station using the same time slot on the same frequency without using a fixed station as a relay. Particularly when a large number of mobile stations located in a zone are used, the channels of the fixed stations can be used effectively, so there is no need to install many fixed stations, which is extremely useful.
第１図は本発明の原理説明図、
第２図は本発明の一実施例のシステム構成と制御チャネ
ルの動作を示す図、
第３図は本発明の一実施例のシステム構成と通信チャネ
ルの使用動作を示す図、
第４図は本発明の一実施例のシーケンス、第５図は従来
方式によるシステム構成と制御チャネルの動作を示す図
、
第６図は従来方式による構成と通話チャネルの使用動作
を示す図、
第７図は従来方式を用いたシーケンスである。
５１・・・固定局、５３・・・発呼移動局、５５・・・
着呼移動局、ｌｏｔ・・・固定局、１０３・・・ゾーン
、１０５・・・発呼移動局、１０７．１０９・・・上り
タイムスロット、１１１．１１３・・・下りタイムスロ
ット、
■
■
５・・・上り信号、
■
７・・・下り信号。
代
理
人Fig. 1 is an explanatory diagram of the principle of the present invention. Fig. 2 is a diagram showing the system configuration and control channel operation of an embodiment of the present invention. Fig. 3 is a diagram showing the system configuration and communication channel operation of an embodiment of the present invention. Figure 4 shows a sequence of an embodiment of the present invention; Figure 5 shows a conventional system configuration and operation of a control channel; Figure 6 shows a conventional system configuration and usage of communication channels. A diagram showing the operation, FIG. 7, is a sequence using the conventional method. 51...Fixed station, 53...Calling mobile station, 55...
Called mobile station, lot... Fixed station, 103... Zone, 105... Calling mobile station, 107.109... Uplink time slot, 111.113... Downlink time slot, ■ ■ 5 ...up signal, ■ 7...down signal. agent
Claims (1)
割され、さらに時分割により上り信号及び下り信号を送
受信して互いに通信を行う時分割多重通信方式において
、 前記固定局のゾーン内に存在する発呼移動局と着呼移動
局間で通信を行う場合、前記固定局は該発呼移動局の呼
出信号により、該発呼移動局及び該着呼移動局に同一周
波数及び、同一チャネルを夫々割り当て、 該発呼移動局は前記割り当てられたチャネル上りタイム
スロットと下りタイムスロットを入れ替えて、該着呼移
動局からの上り信号を待ち、前記固定局は該チャネルで
の送信を停止すると同時に、該着呼移動局からの上り信
号及び通信を監視し、 該着呼移動局の上り信号が該発呼移動局で受信されると
、該発呼移動局と該着呼移動局で通信を開始すること を特徴とする移動通信におけるゾーン内通信方式。[Claims] In a time division multiplex communication system in which a fixed station and a mobile station are time-divided into two or more channels using the same frequency, and further transmit and receive uplink signals and downlink signals by time division to communicate with each other, When communicating between a calling mobile station and a called mobile station existing within the zone of a station, the fixed station uses the paging signal of the calling mobile station to communicate with the calling mobile station and the called mobile station. the same frequency and the same channel are respectively assigned, the calling mobile station swaps the uplink time slot and downlink time slot of the assigned channel, waits for an uplink signal from the called mobile station, and the fixed station uses the channel. At the same time, it monitors the uplink signal and communication from the called mobile station, and when the uplink signal from the called mobile station is received by the calling mobile station, the calling mobile station and the called mobile station An intra-zone communication method in mobile communication characterized by starting communication at a calling mobile station.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2270219A JPH04145733A (en) | 1990-10-08 | 1990-10-08 | In-zone communication system in mobile communication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2270219A JPH04145733A (en) | 1990-10-08 | 1990-10-08 | In-zone communication system in mobile communication |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04145733A true JPH04145733A (en) | 1992-05-19 |
Family
ID=17483203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2270219A Pending JPH04145733A (en) | 1990-10-08 | 1990-10-08 | In-zone communication system in mobile communication |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04145733A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06342057A (en) * | 1993-05-31 | 1994-12-13 | Nec Corp | Gps ship navigation system |
| JP2009540630A (en) * | 2006-06-02 | 2009-11-19 | クゥアルコム・インコーポレイテッド | Wireless subscriber stations for short-range ad hoc data communication |
| JP2009544219A (en) * | 2006-07-19 | 2009-12-10 | インテル・コーポレーション | Method, apparatus, and system for changing transmission map and communicating in wireless network |
| WO2012073846A1 (en) * | 2010-11-30 | 2012-06-07 | 株式会社エヌ・ティ・ティ・ドコモ | Mobile communication method, wireless base station, and mobile station |
| JP2013017229A (en) * | 1999-06-23 | 2013-01-24 | Sony Internatl Europ Gmbh | Network device and method for controlling transmission power |
-
1990
- 1990-10-08 JP JP2270219A patent/JPH04145733A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06342057A (en) * | 1993-05-31 | 1994-12-13 | Nec Corp | Gps ship navigation system |
| JP2013017229A (en) * | 1999-06-23 | 2013-01-24 | Sony Internatl Europ Gmbh | Network device and method for controlling transmission power |
| JP2014171268A (en) * | 1999-06-23 | 2014-09-18 | Interdigital Patent Holdings Inc | Network device and method for controlling transmission power |
| JP2015084539A (en) * | 1999-06-23 | 2015-04-30 | インターデイジタル パテント ホールディングス インコーポレイテッド | Network device and method for controlling transmission power |
| JP2009540630A (en) * | 2006-06-02 | 2009-11-19 | クゥアルコム・インコーポレイテッド | Wireless subscriber stations for short-range ad hoc data communication |
| US8571473B2 (en) | 2006-06-02 | 2013-10-29 | Qualcomm Incorporated | Wireless subscriber station for short range ad-hoc data communication |
| JP2009544219A (en) * | 2006-07-19 | 2009-12-10 | インテル・コーポレーション | Method, apparatus, and system for changing transmission map and communicating in wireless network |
| WO2012073846A1 (en) * | 2010-11-30 | 2012-06-07 | 株式会社エヌ・ティ・ティ・ドコモ | Mobile communication method, wireless base station, and mobile station |
| JP2012119827A (en) * | 2010-11-30 | 2012-06-21 | Ntt Docomo Inc | Mobile communication method, radio base station, and mobile station |
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