TW384585B - The system of decreasing the call blocking probability in wireless local loop system - Google Patents
The system of decreasing the call blocking probability in wireless local loop system Download PDFInfo
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Description
五、發明說明（1) 本發明係有關一種無線區域迴路系統之降低通話阻塞 率之系統’尤指一種利用建議接替之方法，將部份通話中 之無線電網路終端台’由已頻道飽和之無線電基地台細胞 内分配至未達飽和之其他無線電基地台，以預防通話受阻 及提高使用效率之設計。 如圖一所示，係為無線區域迴路系統之構成圖。基地 台控制中心111連結無線電基地台1 2 1，1 2 2 ,與1 2 3，並與 公眾交換電話網路1 00相連。無線電基地台之無線電通訊 範圍’稱之為細胞（C e Π ) ’如：細胞1 3 1，細胞1 3 2 ,與細 胞133。在一無線電基地台細胞内之無線電網路終端台， 可利用無線電波與該無線電基地台相互通訊。例如，無線 電網路終端台141在無線電基地台121之細胞131内，則無 線電網路終端台141與無線電基地台121可利用無線電波相 互通訊。特別地，無線電網路終端台1 4 〇在無線電基地台 121之細胞131與無線電基地台122之細胞132交集區之170 内’則可自由選擇與無線電基地台121或無線電基地台I〗〗 建立通話連線。每一個無線電網路終端台14〇、142 皆與，個電話機1 5,0、151、152連接，用以提供客戶電話 服務，如：無線電網路終端台1 41連接電話機1 5 1。 每一個無線電基地台121、122、或123提供有限個數之無 線頻道’供多個無.線電網路終端台共享使用，用以建立’通 話連線與交換控制信令’如：無線電基地台1 21提供無線 頻道.給無線電網路終端台140與141共享使用。當一無”線電 基地台121、122或123所提供之所有有限個數之無線頻道V. Description of the invention (1) The present invention relates to a system for reducing a call blocking rate of a wireless regional loop system, particularly a method of using a proposed replacement method to partially saturate a radio network terminal station during a call from a saturated channel. The design of the radio base station cell is allocated to other radio base stations that are not saturated to prevent the call from being blocked and improve the use efficiency. As shown in Figure 1, it is a structural diagram of a wireless zone loop system. The base station control center 111 is connected to the radio base stations 1 2 1, 1 2 2 and 1 2 3, and is connected to the public switched telephone network 100. The radio communication range of the radio base station is called a cell (C e Π), such as cell 1 3 1, cell 1 3 2, and cell 133. A radio network terminal in a cell of a radio base station can communicate with the radio base station using radio waves. For example, if the radio network terminal station 141 is inside the cell 131 of the radio base station 121, the radio network terminal station 141 and the radio base station 121 can communicate with each other by radio waves. In particular, the radio network terminal station 140 is within 170 of the intersection area of the cell 131 of the radio base station 121 and the cell 132 of the radio base station 122, and can be freely selected to establish with the radio base station 121 or the radio base station I. Call connection. Each radio network terminal station 140, 142 is connected to a telephone set 15.0, 151, 152 to provide customer telephone services. For example, the radio network terminal station 1 41 is connected to a telephone set 151. Each radio base station 121, 122, or 123 provides a limited number of wireless channels for shared use by multiple wireless network terminals to establish a 'call connection and exchange control signaling', such as a radio base station 1 21 provides wireless channels. It is shared for radio network terminals 140 and 141. When a wireless "all limited number of wireless channels provided by base station 121, 122 or 123
五、發明說明（2) 被元王伯用’則稱此無線電基地台頻道飽和。如：無線電 基地台121頻道餘和時，無線電基地台121不具備空閒頻 道’以提供給無線電網路終端台140與141進行要求建立通 話連線’進而導致無線電基地台121阻塞（Blocking)現 象。 本發明之無線區域迴路系統之無線電網路終端台必須 具備行動台控制接替（Mobile Control Handover，MCH0) 技術之基本能力。行動台控制接替技術，即當無線電網路 終端台140與無線電基地台121於建立通話連線期間，無線 電網路終端台1 4〇量測通話品質逐漸下降至無法接受的情 況’便主動掃描頻道以尋找通話品質較佳的其他無線電基 地台’尋找到此品質較佳之無線電基地台丨2 2後便建立新 通話連線’並立即斷絕與原無線電基地台丨21之通話連 線，完成接替程序。因此，量測通話品質與建立新通話連 線程序皆是由無線電網路終端台主動發起。國際無線通訊 規格中，數位加強式免線通訊（Digital Enhanced Cordless Telecommunication，DECT)協定具備此技術能 力。 -V. Description of the Invention (2) Used by Yuan Wangbo ', this radio base station channel is saturated. For example, the radio base station 121 does not have an idle channel ′ to provide the radio network terminal stations 140 and 141 with a request to establish a communication connection ”, which causes the radio base station 121 to block. The radio network terminal of the wireless local loop system of the present invention must have the basic capability of Mobile Control Handover (MCH0) technology. The mobile station controls the replacement technology, that is, when the radio network terminal station 140 and the radio base station 121 establish a call connection, the radio network terminal station 140 measures that the call quality gradually decreases to an unacceptable condition, and then actively scans the channel. In order to find other radio base stations with better call quality, 'find a radio base station with better quality 丨 2 2 and establish a new call connection' and immediately disconnect the call connection with the original radio base station 丨 21 to complete the replacement process . Therefore, the procedures for measuring call quality and establishing new call connections are initiated by radio network terminals. Among the international wireless communication specifications, the Digital Enhanced Cordless Telecommunication (DECT) protocol has this technical capability. -
Tai-P〇 Chu 與Stephen S. Rappaport 於IEEE Transactions on Vehicular Technology, Vol.46,Tai-P〇 Chu and Stephen S. Rappaport in IEEE Transactions on Vehicular Technology, Vol. 46,
No. 1， Feb. 1 99 7期.刊中第41至54頁揭示一方法，係多個無 線電基地台細胞交集區之無線電網路終端台通話阻塞率 低。如第一圖顯示，無線電網路終端台140在無線電基地 台121之細胞131與無線電基地台122之細胞132交集區170No. 1, Feb. 1 99, No. 7, page 41 to 54 discloses a method in which the radio network terminal station has a low call blocking rate at the cell intersection area of multiple radio base stations. As shown in the first figure, the radio network terminal station 140 intersects with the cell 131 of the radio base station 121 and the cell 132 of the radio base station 122.
第6頁 五、發明說明（3) 内’則可自由選擇與無線電基地台121或無線電基地台122 建立通話連線。即使當無線電基地台121頻道已飽和，但 無線電基地台122通話頻道未飽和，此時，無線電網路終 端台140可自由選擇無線電基地台122建立通話，不必受限 於無線電基地台121之頻道飽和《如此，在無線電基地台 細胞交集區170之無線電網路終端台140，具備較低之通話 阻塞率。 但’當無線電基地台121頻道飽和時，在非多個無線 電基地台細胞交集區之無線電網路終端台141若欲建立通 話連線’將導致通話阻塞，乃造成此一問題，即非多個無 線電基地台細胞交集區之無線電網路終端台通話阻塞率過 南° 緣此’本發明之主要目的即是提供一種無線區域迴路 系統之降低通話阻塞率之系統，主要是利用建議接替之方 法，使非多個無線電基地台無線電通訊範圍彼此交集區之 無線電網路終端台（如前述之無線電網路終端台141)之$ 話阻塞率較上述方法低，以解決上述問題。 本發明之又一目的，即是提高全系統無線頻道之使用效率， 以協助無線區域迴路系統服務提供廠商獲取更高利潤並 使客戶不再抱怨通話常阻塞’進而提升服務提供廠商形 象。 細節 依據前述之發明動機與背景，以下闡述本發明之動作 本發明之無線電基地台之建議接替方法包含以下 能Page 6 V. Description of the invention (3) Within ', you can freely choose to establish a call connection with the radio base station 121 or the radio base station 122. Even when the channel of the radio base station 121 is saturated, but the radio channel of the radio base station 122 is not saturated, at this time, the radio network terminal station 140 can freely select the radio base station 122 to establish a call without being limited to the channel saturation of the radio base station 121 "In this way, the radio network terminal 140 in the cell intersection area 170 of the radio base station has a lower call blocking rate. However, 'when the radio base station 121 channel is saturated, if the radio network terminal 141 in the cell intersection area of non-multiple radio base stations wants to establish a call connection', it will cause call congestion, which causes this problem, that is, non-multiple The radio network terminal station's call blocking rate in the cell intersection area of the radio base station is too high. Therefore, the main purpose of the present invention is to provide a system for reducing the call blocking rate in a wireless regional loop system, mainly by using the recommended replacement method. In order to solve the above problem, the radio network terminal station (such as the aforementioned radio network terminal station 141) of a non-multiple radio base station radio communication range intersection area is lower than the above method. Another object of the present invention is to improve the use efficiency of the whole system wireless channel, so as to assist the wireless regional loop system service provider to obtain higher profits and to prevent customers from complaining that the call is often blocked, thereby improving the image of the service provider. Details Based on the foregoing motivation and background of the invention, the actions of the invention are described below. The proposed replacement method of the radio base station of the invention includes the following features:
第7頁 五、發明說明（4) 力*♦ (1) 當一有無線電網路終端台對無線電基地台要求建立通 話連線成功後’此無線電基地台立即確認頻道是否已 達飽和。若是，此無線電基地台對目前與此無線電基 地台建立通話連線之所有之無線電網路終端台發出建 議接替命令之信令。 (2) 若接收到來自無線電網路終端台之建議接替要求之信 令’檢查是否將造成頻道飽和，若否，接收要求；若 是，拒絕要求。 因此，本發明之無線電基地台擁有拒絕建議接替之能 ^ 所以不導致強迫接替而造成該無線電基地台發生 飽和之現象。 路終端台之建議接替方法包括有下 台接收到來自無線電基地台 路終端 之信令 掃描所 通話或 其他可 ;若是 電基地 e w〜热琢龟網 列步驟： 1 * 通話中之無線電網 .令； 有可利用頻道，發現是否存 建議接替之無線電基地台。 建立通話連線之無線電基地 ，繼續以下步驟。 台’發出建儀接替要求之信Page 7 V. Description of the invention (4) Force * ♦ (1) When a radio network terminal station requests the radio base station to establish a connection successfully, the radio base station immediately confirms whether the channel has reached saturation. If so, the radio base station sends a signal to suggest a replacement command to all radio network terminals currently establishing a communication connection with this radio base station. (2) If a signal is received from the radio network terminal to suggest a succession request 'to check whether the channel will be saturated, if not, accept the request; if so, reject the request. Therefore, the radio base station of the present invention has the ability to refuse to propose a replacement ^ so it does not lead to forced replacement and saturation of the radio base station. The recommended replacement method of the radio terminal station includes the step of receiving the signaling from the radio base station to scan the call or other communication; if it is an electric base station, the steps are as follows: 1 * The radio network in the call. Order; There are available channels to find out if there is a recommended radio base station for replacement. To establish a radio base for call connections, continue with the following steps. Taiwan ’s letter from Jianyi to take over
發出建議接替命令 *無線電網路終端台 ，其他非已要*求過 2否，表示找不到 α’因此停止程序 • 對掃插刭夕纪> ^ 你到之新.無線Issue a suggestion to take over the order * Radio network terminal station, other non-required * Asked 2 no, it means that α ’cannot be found, so the process is stopped • Scanning and inserting Xixi > ^ You are new. Wireless
果拒絕或等待超過時效，則返回進行步驟2。 ^ /為使責審查委員瞭解本創作之目的、特徵及功欵， 茲藉由下述具體實施例，並配合所附之圖式，對本創作 一詳細說明，說明如后： 圖式說明： 圖一係為無線區域迴路系統之構成圖； 圖二係根據本發明之無線電網路終端台執行建議接替之流 程步驟； ~ 圖三係根據本發明應用於DECT協定之信令處理流程圖一實 施例。 圖號說明： 312新無線電基地台 313無線電網路終端台 3 3 1〜3 3 5時間點 341〜342信令 343接受回應 3 5 1斷絕舊通話連線 360有效時效 1 0 0公眾交換電話網路 111基地台控制中心 121〜123無線電基地台 131〜133 細胞 140〜142無線電網路終端台 150〜152電話機 170細胞交集區 311舊無線電基地台 道使用率 一個基地 本發明主要疋&供低填.邊阻塞率與.高無線頻 之能力。如圖一所示，該無線區域迴路系統係由If you refuse or wait longer than the time limit, go back to step 2. ^ / In order to make the review committee understand the purpose, characteristics and functions of this creation, hereby use the following specific examples and the accompanying drawings to explain the creation in detail, as explained below: The first is a structural diagram of a wireless regional loop system; the second is a flowchart of a radio network terminal station performing a recommended replacement according to the present invention; the third is a flow chart of an embodiment of the signaling process applied to the DECT protocol according to the present invention; . Drawing number description: 312 new radio base station 313 radio network terminal station 3 3 1 ~ 3 3 5 time point 341 ~ 342 signaling 343 accept response 3 5 1 sever old call connection 360 effective time limit 1 0 0 public switched telephone network Road 111 Base Station Control Center 121 ~ 123 Radio Base Station 131 ~ 133 Cell 140 ~ 142 Radio Network Terminal Station 150 ~ 152 Telephone 170 Cell Intersection Area 311 Old Radio Base Station Road Utilization Rate One Base This invention is mainly suitable for & low Fill in the side blocking rate and the ability of high wireless frequency. As shown in Figure 1, the wireless zone loop system consists of
五、發明說明（6) 台控制中心111，多個無線電基地台121〜123，以及多個 無線電網路終端台140〜142所構成"其中，多個無線電基 地台121〜123之細胞131〜133彼此交集。每個無線電基地 台121〜123之細胞131〜133内，提供多個無線電網路終端 台140〜142使用有限個數之無線頻道，用以建立通話連線 與交換控制信令。 备一個無線電基地台121頻道飽和，利用此無線電基 地台與目前所有通話中之無線電網路終端台（如：無線電網 路終端台140)間之信令溝通，利用建議接替之方法，分配 至未達飽和之其他無線電基地台122。藉以對此無線電基 地台121保有空閒之無線頻道，預防此無線電基地台細胞 131内之其他無線電網路終端台（如：無線電網路終端台 1 41 )欲建立通話時受到阻塞，並藉以提高全系統無線頻道 =使珥效率。協助無線區域迴路系統服務提供廠商獲取更 尚利潤，並使客戶不再抱怨通話常阻塞，進而提升服務提 供廠商形象。 因此 下能力 本發明之無線電基地台之建議接替方法包含以 ⑴ (2) 有無線電網路終端台對無線電基地台要* 2線成功I，此無線電基地台立即確認頻道是否已達 ，和。若是，此無線電基地台對目前與此無線電美 口建立通話連線之所有之無線電 狢二 接替命令之信令。 叫、、鸲台發出建議 若接收到來自無線電網路終端台之建議接替要求之俨V. Description of the invention (6) A control center 111, a plurality of radio base stations 121 to 123, and a plurality of radio network terminal stations 140 to 142 " Among them, a plurality of cells 131 to 123 of the radio base stations 121 to 123 133 intersect with each other. Within the cells 131 to 133 of each of the radio base stations 121 to 123, a plurality of radio network terminal stations 140 to 142 are used to use a limited number of wireless channels to establish a call connection and exchange control signaling. Prepare a radio base station channel 121 for saturation. Use this radio base station to communicate with all radio network terminals (eg, radio network terminal 140) currently in communication. Use the recommended replacement method to allocate to Other radio base stations 122 reaching saturation. In this way, the radio base station 121 keeps free wireless channels to prevent other radio network terminal stations (such as the radio network terminal station 1 41) in the radio base station cell 131 from being blocked when it wants to establish a call, and to improve the overall System wireless channel = enable efficiency. Assist wireless zone loop system service providers to obtain better profits and keep customers from complaining that calls are often blocked, thereby improving the image of service providers. Therefore, the proposed replacement method of the radio base station of the present invention includes the following: (2) A radio network terminal station requests the radio base station for a * 2 line success, and the radio base station immediately confirms whether the channel has been reached, and If so, this radio base station signals the succession of all radios currently in communication with this radio interface. If the request is received from the radio network terminal station
五、發明說明（7) 7 ，檢查是否將造成頻道飽和，若否，接收要求；若 是，拒絕要求。 所以，本方法之無線電基地台擁有拒絕建議接替之能 力甘不因強迫接替而造成除原頻道飽和之無線電基地台外 之其他無線電基地台發生頻道飽和之現象1如益線電基 地台122擁有拒絕無線電網路終端台14〇建議接替之要 以免造成自己頻道飽和。 如圖二所示，顯示根據本發明之無線電網路終端台之流程 步驟。首先，通話中之無線雷網政欲 播綠電網路終端台接收到來自無線 台發出建議接替命令之信令(21);無線電網路終端 。掃描所有可利用頻道（22)，發現是否存在 過通話或建議接替之盔锿電美妯.从尤，非要衣 s 踝虿基地台（23)，若否則停止程序 (30);若疋則繼續對掃描到之新無線電基地台發出建議接 替要f之信令（24)，等待新無線電基地台回應並判斷是 否超過時效（25);若超過時效，則重新無線電網路線端二 掃描所有可利用頻道（22);若未超過時效，則檢查是否: 應（26)。若未回應則繼續等待。若回應的結果（27)是拒 絕，重新無線電網,路終端台掃描所有可利用頻道（22);若 回應的結果是接受，則無線電網路終端台進行接替程序 (28)，然後即完成結束（29)，而由接替之無線電網路終端 台進行通話。 綜合以上所述，本方法之無線電網路終端台之建議 替方法包含下列步驟： (1 )首先，通話中之無線電網路終端台接收到來自無線電5. Description of the invention (7) 7 Check whether the channel will be saturated, if not, accept the request; if so, reject the request. Therefore, the radio base station of this method has the ability to reject the proposed replacement, and will not cause the channel saturation of other radio base stations except the radio base station that is saturated with the original channel due to forced replacement. The radio network terminal station 14 recommends that it be replaced to avoid saturation of its own channel. As shown in Fig. 2, the flow steps of a radio network terminal station according to the present invention are shown. First of all, the wireless thunder network dictator during the call The green power network terminal station received the signaling from the wireless station to suggest a replacement command (21); the radio network terminal. Scan all available channels (22) and find out if there is a call or a recommended helmet to be replaced. Congyou, non-necessary clothing s Ankle base station (23), if not, stop the program (30); if not, then Continue to send the proposed new radio base station to take over the signaling of f (24), wait for the new radio base station to respond and determine whether the time limit is exceeded (25); if the time limit is exceeded, rescan all the radio network ends Use channel (22); if the time limit is not exceeded, check if: should (26). If not, continue to wait. If the result of the response (27) is a rejection, the radio network is restarted, and the terminal station scans all available channels (22); if the result of the response is accepted, the radio network terminal station performs the replacement procedure (28), and then it is completed. (29), and the call is made by the succeeding radio network terminal. Based on the above, the proposed method of the radio network terminal station of the method includes the following steps: (1) First, the radio network terminal station in the call receives
第11頁 五、發明說明（8) 基地台發出建議接替命令之信令； (2) 二無線電網路終端台掃描所有可利用頻道，發現 子j其他非已要求過通話或建議接替之無線電基 雷:从t否，表示找不到其他可建立通話連線之無線 (3) 對揞描：’因此停止程序；若I，繼讀以下步驟。 八 彳之新無線電基地台，發出建議接替要求之信 ⑷等待新無線電基地台回應，若回應結果 電網路終端台進行接替程序，完成本方法目的貝; 果拒絕或等待超過時效，則返回進行步驟（2) ^ 以本發明應用於⑽CT協定之信令處理流為實施例作一 說明（如圖三所示）；本實施例採用DECT之媒體存取層 (Medium Access Control , MAC)協定以便協助說明本發 明，並s登明本發明之可行性。本信令處理流程圖中，描述 舊無線電基地台31.1，新無線電基地台312，與無線電網路 終端台31 3間之信令處理流程。首先，於時間點331，當一 有無線電網路終端台對舊無線電基地台311要求建立通咭 連線成功後’舊無^線電基地台311確認頻道已達飽和。^ 後，舊無線電基地台3 11對所有之無線電網路終端台，發 出建議接替命令之信令341。此建議接替命令，可利用 DECT MAC協定所保.留之第十五類呼叫（Pe)控制命令來完 成。其次，於時間點3 3 2，通話中之無線電網路終端台3】3 接收到來自舊無線電基地台311發出建議接替命令之^令 341，則開始掃描所有可利用頻道，發現是否存在其丄Page 11 V. Description of the invention (8) The base station sends a signal to propose a replacement order; (2) The second radio network terminal scans all available channels and finds other radio bases that have not requested a call or suggested a replacement. Lei: From t to no, it means that no other wireless connection can be established. (3) Contrast: 'So stop the process; if I, continue reading the following steps. Hachiman ’s new radio base station sends a letter suggesting a replacement request and waits for a response from the new radio base station. If the response results in the succession of the electrical network terminal station, the purpose of this method is completed; if it is rejected or waits for the time limit to be exceeded, return to the step (2) ^ The present invention applies the signaling processing flow of the ⑽CT protocol as an example (as shown in FIG. 3); this embodiment uses the DECT's Medium Access Control (MAC) protocol to assist Explain the invention and demonstrate the feasibility of the invention. This signaling processing flowchart describes the signaling processing flow between the old radio base station 31.1, the new radio base station 312, and the radio network terminal station 313. First, at time point 331, when a radio network terminal station requests the old radio base station 311 to establish a connection, the old radio base station 311 confirms that the channel is saturated. ^ Afterwards, the old radio base station 3 11 issued a signaling 341 to all radio network terminal stations to suggest a replacement command. This suggested succession command can be accomplished by using the fifteenth type of call (Pe) control command guaranteed by the DECT MAC protocol. Secondly, at time point 3 3 2, the radio network terminal station 3] 3 during the call receives the order 341 from the old radio base station 311 to recommend a replacement order, and then starts scanning all available channels and finds out whether there is any.
已要求過通話或建議接替之無線電基地台。假設存在則 對掃描到之新無線電基地台312，發出建議接替要求之信 令342。此建議接替要求，可利用DECT MAC協定所保留之 第一類MAC第六態（Ml Type 6)控制命令來完成。於時間點 333，若新無線電基地台312接收到來自無線電網路終端台 313之建議接替要求之信令342 ’檢查是否將造成頻道飽 和。若未造成頻道飽和，則利用標準DECT MAC協定之第一 類MAC第四態（Ml Type 4)確認控制命令來回應。若造成頻 道飽和，則利用標準DECT MAC協定之第一類MAC第三態（Ml Type 3 )未確認控制命令來回應。假設未造成頻道飽和且 無線電網路終端台313於有效時效3 60内接收到接受回應 343 ’則於時間點334，與新無線電基地台31 2完成建立新 通話連線。然後，利用標準DECT MAC協定之第十六類 MAC (Mf)釋放控制命令，以供釋放與舊無棒電基地台311之 通話連線351。最後，於時間點335，完成接替至新無線電 基地台31 2程序。注意地，本實施例採用DECT之媒體存取 層（Medium Access Control，MAC)協定以便協助說明本發 明’並不表示本發，明僅限用於DECT協定系統。 由於本發明所採用的技術手段，利用建議接替之方 法，將部份通話中之無線電網路終端台，由已頻道飽和之 無線電基地台細胞内分配至未達飽和之其他無線電基地 台，藉以對此無線電基地台保有空閒之無線頻道’預防此 無線電基地台細胞内之其他無線電網路終端台欲建立通話 時受到阻塞，及提高全系統無線頻道之使用效率’確實具A radio base station that has requested a call or suggested a replacement. Assuming it exists, a new radio base station 312 is scanned with a signal 342 recommending a replacement request. This suggestion can be replaced by the M1 Type 6 control command of the first type of MAC reserved by the DECT MAC protocol. At time point 333, if the new radio base station 312 receives the signal 342 'from the radio network terminal station 313 for the proposed replacement request, it is checked whether the channel will be saturated. If channel saturation is not caused, the first type MAC fourth state (Ml Type 4) confirmation control command of the standard DECT MAC protocol is used to respond. If channel saturation is caused, the first type MAC third state (Ml Type 3) unconfirmed control command of the standard DECT MAC protocol is used to respond. Assuming that the channel is not saturated and the radio network terminal station 313 receives the acceptance response 343 within the effective aging time 3 60, then at time 334, the new radio base station 31 2 completes the establishment of a new call connection. Then, the sixteenth type MAC (Mf) release control command of the standard DECT MAC protocol is used to release the call connection 351 with the old base station 311. Finally, at time 335, the procedure for replacing the new radio base station 31 2 is completed. Note that this embodiment uses the DECT's Medium Access Control (MAC) protocol in order to assist in explaining the present invention 'does not indicate the present invention, and is only limited to the DECT protocol system. Due to the technical means adopted by the present invention, the recommended method of replacement is used to allocate the radio network terminal stations in part of the call from the saturated radio base station cells to other radio base stations that are not saturated. This radio base station keeps idle wireless channels 'prevents other radio network terminals in this radio base station cell from being blocked when it wants to establish a call, and improves the efficiency of the use of the whole system's wireless channels'.
第13頁 五、發明說明（10) 有高度產業利用性，B 士 & 合專利法發明專利之申：具：穎性、實用#，實已符 此，謹請貴審查委員鮮^ ，差依法具文申請之。為 德便。 4予審查，並祈早日賜准專利，至感 士旅：上ί將本發明作—詳細說明，•以上所述者，僅為 本發明之較佳實施例而已，當不能限定本發明實施=為 圍。即凡依本發明申請範圍所作之均等變化與 把 應仍屬本發明之專利涵蓋範圍内。 巾寻’皆Page 13 V. Description of the invention (10) It has high industrial applicability, and the application of invention patent of B & patent law: has: singularity and practicality #, which is indeed true, I would like to invite the reviewing committee members fresh ^, poor Apply for it in accordance with the law. For Deben. 4 to review, and pray for the grant of a quasi-patent as soon as possible, to the Senshi Brigade: the above will make the invention-a detailed description, • the above is only a preferred embodiment of the invention, when the implementation of the invention cannot be limited = Wai. That is to say, all equivalent changes and applications made in accordance with the scope of application of the present invention are still covered by the patent of the present invention. To find ’
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| Application Number | Priority Date | Filing Date | Title |
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| TW87111096A TW384585B (en) | 1998-07-09 | 1998-07-09 | The system of decreasing the call blocking probability in wireless local loop system |
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| WO2013123637A1 (en) * | 2012-02-20 | 2013-08-29 | Renesas Mobile Corporation | Enhanced measurement for new carrier type |
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| WO2013123637A1 (en) * | 2012-02-20 | 2013-08-29 | Renesas Mobile Corporation | Enhanced measurement for new carrier type |
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