TWI488527B - Communication method utilized in time division multiple access system, related mobile device and base station - Google Patents
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Description
本發明係指一種分時多工存取系統的通訊機制，尤指一種使用於分時多工存取系統的行動裝置及基地台。The invention relates to a communication mechanism of a time-division multiplex access system, in particular to a mobile device and a base station used in a time-sharing multiplex access system.
一般而言，現有的分時多工存取(Time Division Multiple Access,TDMA)系統係以點對點(point to point)傳輸的通訊為主，若為達到點對多點(point to multi-point)之群組通訊(例如群組語音通訊)的目的，實作上必需使用較多個數的時槽(Time Slot)而浪費數倍的頻寬。整體系統會因為較多時槽被佔用而無法獲得有效的提升，且因為增加一群組通訊的成員就需要額外增加佔用多個以上的時槽，因此也無法讓較多群組通訊成員共同參與群組通訊，以實作上來說，現有的分時多工存取系統實不符合目前的需求。In general, the existing Time Division Multiple Access (TDMA) system is based on point-to-point communication, if it is to point to multi-point. The purpose of group communication (such as group voice communication) is that it is necessary to use a multiple number of time slots (Time Slot) and waste several times the bandwidth. The overall system will not be effectively upgraded because more time slots are occupied, and because adding a group of communication members requires an additional number of time slots, it is impossible to allow more group communication members to participate. In terms of group communication, the existing time-sharing multiplex access system does not meet the current needs.
因此，本發明的目的之一在於提供一種使用於分時多工存取系統的行動裝置及基地台，不需佔用分時多工存取系統中的過多時槽，即可有效達到群組通訊的效果，切合目前的需求。Therefore, one of the objectives of the present invention is to provide a mobile device and a base station for use in a time-sharing multiplex access system, which can effectively achieve group communication without occupying excessive time slots in a time-division multiplex access system. The effect is in line with current needs.
依據本發明之實施例，其係揭露一種使用在一分時多工存取系統的通訊方法。該通訊方法包含有：偵測該分時多工存取系統之一基地台所規範的複數個時槽，以判斷該分時多工存取系統是否具有對應於一共波通訊的一時槽；以及當該分時多工存取系統具有該時槽，使用一第一行動裝置經由該時槽廣播一資訊訊號。In accordance with an embodiment of the present invention, a communication method using a time division multiplex access system is disclosed. The communication method includes: detecting a plurality of time slots specified by a base station of the time division multiplex access system to determine whether the time division multiplex access system has a time slot corresponding to a common wave communication; The time division multiplex access system has the time slot, and a first mobile device broadcasts an information signal via the time slot.
依據本發明之實施例，其係揭露一種使用在一分時多工存取系統的通訊方法，其中一第一行動裝置與一第二行動裝置係位於一基地台的訊號覆蓋範圍內。該通訊方法包含有：偵測該基地台所規範的複數個時槽，以判斷該分時多工存取系統是否具有對應於一共波通訊的至少一時槽；使用該基地台接收該第一行動裝置經由該至少一時槽所廣播的一資訊訊號；以及使用該基地台經由該至少一時槽廣播該資訊訊號至該第二行動裝置。According to an embodiment of the present invention, a communication method using a time division multiplex access system is disclosed, wherein a first mobile device and a second mobile device are located within a signal coverage of a base station. The communication method includes: detecting a plurality of time slots specified by the base station to determine whether the time division multiplex access system has at least one time slot corresponding to a common wave communication; receiving the first mobile device by using the base station And transmitting, by the base station, the information signal to the second mobile device via the at least one time slot.
依據本發明之實施例，其係揭露一種使用在一分時多工存取系統的行動裝置。該行動裝置包含有一控制單元與一傳輸單元，控制單元係用以偵測該分時多工存取系統之一基地台所規範的複數個時槽，以判斷該分時多工存取系統是否具有對應於一共波通訊的一時槽，傳輸單元係耦接至控制單元並用以於該分時多工存取系統具有該時槽時，經由該時槽廣播一資訊訊號。In accordance with an embodiment of the present invention, a mobile device using a time division multiplex access system is disclosed. The mobile device includes a control unit and a transmission unit. The control unit is configured to detect a plurality of time slots specified by the base station of the time division multiplex access system to determine whether the time division multiplex access system has Corresponding to a time slot of a common wave communication, the transmission unit is coupled to the control unit and configured to broadcast an information signal through the time slot when the time division multiplex access system has the time slot.
依據本發明之實施例，其係揭露一種使用在一分時多工存取系統的基地台，其中一第一行動裝置與一第二行動裝置係位於該基地台的訊號覆蓋範圍內。基地台包含有一控制電路、一接收電路與一傳輸電路，控制電路係用以偵測該分時多工存取系統所規範的複數個時槽，以判斷該分時多工存取系統是否具有對應於一共波通訊的至少一時槽，接收電路係耦接於控制電路並用以依據控制電路的結果來接收第一行動裝置經由該至少一時槽所廣播的一資訊訊號，以及傳輸電路係耦接於控制電路並用以依據控制電路的結果經由該至少一時槽廣播該資訊訊號至第二行動裝置。In accordance with an embodiment of the present invention, a base station for use in a time division multiplex access system is disclosed in which a first mobile device and a second mobile device are located within the signal coverage of the base station. The base station includes a control circuit, a receiving circuit and a transmission circuit, wherein the control circuit is configured to detect a plurality of time slots specified by the time-multiplexed access system to determine whether the time-multiplexed access system has Corresponding to at least one time slot of the common wave communication, the receiving circuit is coupled to the control circuit and configured to receive, according to the result of the control circuit, an information signal broadcast by the first mobile device via the at least one time slot, and the transmission circuit is coupled to the The control circuit is configured to broadcast the information signal to the second mobile device via the at least one time slot according to the result of the control circuit.
本發明之實施例的主要優點在於，運用有限的頻寬即可提供使多個使用者能夠進行即時語音通訊的服務，較習知技術更能符合使用者的需求，尤以對於一臨時佈建的網路環境來說，更能切合用戶的需要。The main advantage of the embodiment of the present invention is that the limited bandwidth can provide a service for enabling multiple users to perform instant voice communication, which is more suitable for the user than the prior art, especially for a temporary deployment. In terms of the network environment, it is more suitable for the needs of users.
請參照第1圖，第1圖是本發明第一實施例之分時多工存取(Time Division Multiple Access,TDMA)系統的示意圖，該分時多工存取系統包含有(但不限於)兩行動裝置100A、100B與一基地台105，該兩行動裝置100A、100B皆係位於基地台105的訊號覆蓋範圍內106，亦即該兩行動裝置100A、100B係位於同一細胞(cell)中，該兩行動裝置100A、100B可分別利用不同的時槽(Time Slot)與基地台105進行資料傳輸(上傳或下載)，該兩行動裝置100A、100B至少分別包含有下述相同的裝置元件與結構，在此僅舉出行動裝置100A為例，行動裝置100A包含有一控制單元110與一傳輸單元115，控制單元110係用來偵測基地台105所規範的複數個時槽S1 ~SN ，以判斷該分時多工存取系統是否具有對應於一共波通訊的至少一時槽Sn ，其中N係為大於1的正整數並代表時槽的個數，傳輸單元115耦接至控制單元110並用以於該分時多工存取系統具有該至少一時槽Sn 時，經由時槽Sn 廣播一資訊訊號Minfo (例如聲音、語音訊息或資料訊息)至其他的行動裝置(例如行動裝置100B)。在本實施例中，該分時多工存取系統係規範使用時槽Sn 來進行共波的語音通訊(此並非本發明的限制)，位在基地台105所對應之細胞內的複數個行動裝置係於時槽Sn 的時間點進行共波語音通訊，該些行動裝置的語音通訊將使用相同的頻率，該分時多工存取系統係使用半雙工的通訊方式進行語音通訊，在時槽Sn 的時間點時，欲開啟語音通話的行動裝置會主動廣播語音，而其他的行動裝置則會收聽目前是否有任何行動裝置正在廣播語音及其所廣播的語音內容，之後，原先收聽語音的行動裝置若變成發話端而欲主動廣播語音，則可在下一碼框(TDMA frame)的時槽Sn 之時間點時進行語音廣播，以使其他行動裝置可收聽到語音訊息。Please refer to FIG. 1. FIG. 1 is a schematic diagram of a Time Division Multiple Access (TDMA) system according to a first embodiment of the present invention. The time division multiplexing access system includes (but is not limited to) Two mobile devices 100A, 100B and a base station 105, both of which are located within the signal coverage area 106 of the base station 105, that is, the two mobile devices 100A, 100B are located in the same cell. The two mobile devices 100A, 100B can perform data transmission (uploading or downloading) with the base station 105 by using different time slots (Time Slots), respectively, and the two mobile devices 100A, 100B respectively include at least the same device components and structures described below. For example, the mobile device 100A includes a control unit 110 and a transmission unit 115. The control unit 110 is configured to detect a plurality of time slots S 1 to S N specified by the base station 105. To determine whether the time-sharing multiplex access system has at least one time slot S n corresponding to a common wave communication, wherein N is a positive integer greater than 1 and represents the number of time slots, and the transmission unit 115 is coupled to the control unit 110. And used for this time sharing When the access system having at least a time slot S n, S n via the broadcast channel information a signal M info (e.g. voice, data messages, or voice messages) to other mobile devices (e.g. mobile device 100B). In this embodiment, the time-division multiplex access system standardizes the use of the time slot S n for co-wave voice communication (this is not a limitation of the present invention), and the plurality of cells located in the cell corresponding to the base station 105 The mobile device performs co-wave communication at the time point of the time slot S n , and the voice communication of the mobile devices uses the same frequency, and the time-division multiplex access system uses half-duplex communication mode for voice communication. at the point in time slot S n, and want to turn on voice calling mobile device will automatically broadcast voice, and other mobile devices will listen to whether there are any voice content being broadcast mobile voice and broadcast after the original If the mobile device listening to the voice becomes the calling terminal and wants to actively broadcast the voice, the voice broadcast can be performed at the time slot of the time slot S n of the next code frame (TDMA frame) so that other mobile devices can listen to the voice message.
於此，行動裝置100A係主動發話廣播，且行動裝置100A的訊號強度係可有效到達行動裝置100B，換言之，行動裝置100B在無干擾下可有效收聽到行動裝置100A所發出的語音訊息Minfo ，如果因為訊號干擾而造成行動裝置100B收聽不清，則行動裝置100B可於下一碼框的相同時槽Sn 時主動發話，告知行動裝置100A前一次通話時並未收聽清楚，使行動裝置100A明暸在下一次的碼框之時槽Sn 時需再次發出語音訊息Minfo 至行動裝置100B，而行動裝置100A的訊號強度可有效到達行動裝置100B但卻發生收聽不清的情況，例如是受到其他行動裝置同時主動發話所影響，或是其他裝置使用到共波通訊所使用的頻率而造成干擾。藉由上述的語音通訊操作，本實施例之行動裝置100A僅需利用本身的無線通訊(Radio Communication)技術進行廣播即可進行群組的語音通訊，而不需連接至基地台105以及後續的骨幹網路(Backbone Network)，因此實不需透過基地台105，就可達到在分時多工存取系統下行動裝置100A、100B能夠進行語音通訊的效果。需注意的是，行動裝置100A、100B仍具有接收語音訊息的電路單元以收聽外來行動裝置所發出的語音訊息。Here, the mobile device 100A actively broadcasts the voice, and the signal strength of the mobile device 100A can effectively reach the mobile device 100B. In other words, the mobile device 100B can effectively listen to the voice message M info sent by the mobile device 100A without interference. If the mobile device 100B is unclear due to signal interference, the mobile device 100B can actively utter the call in the same time slot S n of the next code frame, and inform the mobile device 100A that the previous call is not heard clearly, so that the mobile device 100A It is understood that the voice message M info needs to be sent again to the mobile device 100B at the time slot S n of the next code frame, and the signal strength of the mobile device 100A can effectively reach the mobile device 100B but the situation is unclear, for example, by other The mobile device is also affected by active speech, or other devices use the frequency used by the common wave communication to cause interference. With the voice communication operation described above, the mobile device 100A of the present embodiment can perform group voice communication only by using its own radio communication technology (Radio Communication) technology, without connecting to the base station 105 and subsequent backbones. Since the network (Backbone Network) does not need to pass through the base station 105, the mobile devices 100A and 100B can perform voice communication under the time division multiplex access system. It should be noted that the mobile device 100A, 100B still has a circuit unit that receives the voice message to listen to the voice message sent by the foreign mobile device.
另外，如果前述的行動裝置100A、100B之間的訊號強度彼此無法有效到達(亦即訊號太弱)，例如行動裝置100A與100B恰好位於或移動至基地台105之訊號覆蓋範圍106的兩側時，則行動裝置100A、100B之間的語音通話亦可透過基地台105的轉送來完成，換言之，基地台105可作為行動裝置100A、100B之間之語音通訊的中繼器(Relay)。請參照第2圖，第2圖是本發明第二實施例之分時多工存取系統的示意圖。如第2圖所示，行動裝置100A、100B之間由於距離較遠而致使之間的訊號強度較弱或是無法接收訊號，因此使得當行動裝置100A主動發話時行動裝置100B收聽不清或是行動裝置100B無法直接接收到行動裝置100A所廣播的語音訊息Minfo 時，行動裝置100A、100B之間的語音通訊係可改由透過基地台105的轉達來完成，換句話說，當行動裝置100A廣播語音訊息Minfo 時，行動裝置100A的傳輸單元115係經由前述的時槽Sn 之時間點廣播語音訊息Minfo 以使語音訊息Minfo 傳送至基地台105，接著基地台105會先暫存語音訊息Minfo 並於另一時槽時再次廣播語音訊息Minfo ，以使行動裝置100B收聽到語音訊息Minfo 。本實施例的好處是，無論兩行動裝置移動至任何地點，只要該兩行動裝置仍屬於同一基地台所對應的細胞內且可與基地台進行資料上傳與下載，該兩行動裝置即可有效地進行語音通訊。In addition, if the signal strengths between the aforementioned mobile devices 100A, 100B cannot reach each other effectively (that is, the signals are too weak), for example, when the mobile devices 100A and 100B are located or moved to both sides of the signal coverage area 106 of the base station 105, The voice call between the mobile devices 100A, 100B can also be completed by the transfer of the base station 105. In other words, the base station 105 can serve as a relay for voice communication between the mobile devices 100A, 100B. Please refer to FIG. 2. FIG. 2 is a schematic diagram of a time division multiplexing access system according to a second embodiment of the present invention. As shown in FIG. 2, the signal between the mobile devices 100A and 100B is weak or the signal cannot be received due to the long distance, so that the mobile device 100A can not listen to the mobile device 100A when the mobile device 100A actively speaks. When the mobile device 100B cannot directly receive the voice message M info broadcast by the mobile device 100A, the voice communication between the mobile devices 100A and 100B can be completed by the transmission through the base station 105. In other words, when the mobile device 100A M info broadcast voice messages, the transmission unit 115 based mobile device 100A via the slot when the time point of S n M info broadcast voice messages so that the voice message M info 105 transmits to the base station, then the base station 105 will first staging M info and voice message to another time slot broadcast voice messages M info again, the mobile device 100B to listen to voice messages M info. The advantage of this embodiment is that the two mobile devices can be effectively performed as long as the two mobile devices move to any location as long as the two mobile devices still belong to the cells corresponding to the same base station and can be uploaded and downloaded with the base station. Voice communication.
請參照第3圖，第3圖是第2圖所示之基地台105的方塊示意圖。如第3圖所示，基地台105包含有一控制電路305、一接收電路310與一傳輸電路315，控制電路305係用來偵測該分時多工存取系統所規範之複數個時槽S1 ~SN ，以判斷該分時多工存取系統是否具有對應於一共波通訊的一第一時槽S與一第二時槽S’，接收電路310係耦接於控制電路305並依據控制電路305的結果來接收行動裝置100A經由時槽S所廣播的一資訊訊號Minfo ，傳輸電路315係耦接於控制電路305並依據控制電路305的結果經由時槽S’廣播資訊訊號Minfo 至行動裝置100B，第一時槽S與第二時槽S’可為不同碼框的相同時槽、同一碼框的不同的時槽或是不同碼框的不同時槽，例如，第一、第二時槽S、S’可以是某一碼框的同一時槽Sn 、不同碼框的相同時槽Sn 或是不同碼框的不同時槽Sn 、Sm ，換句話說，基地台105可於前一個碼框的時槽Sn 接收到行動裝置100A的語音訊息Minfo ，之後於同一碼框的的時槽Sm 、下一個碼框的時槽Sn 或下一個碼框的時槽Sm 時，再將所接收的語音訊息Minfo 廣播至行動裝置100B，因此，即便行動裝置100A、100B本身無法直接進行語音訊號傳輸，然而只要透過基地台105的轉達就可完成行動裝置100A、100B之間的群組語音通訊。Please refer to FIG. 3, which is a block diagram of the base station 105 shown in FIG. As shown in FIG. 3, the base station 105 includes a control circuit 305, a receiving circuit 310 and a transmission circuit 315. The control circuit 305 is configured to detect a plurality of time slots S specified by the time division multiplex access system. 1 to S N , to determine whether the time division multiplex access system has a first time slot S and a second time slot S ′ corresponding to a common wave communication, and the receiving circuit 310 is coupled to the control circuit 305 and is configured according to The result of the control circuit 305 is to receive an information signal M info broadcasted by the mobile device 100A via the time slot S. The transmission circuit 315 is coupled to the control circuit 305 and broadcasts the information signal M info via the time slot S' according to the result of the control circuit 305. To the mobile device 100B, the first time slot S and the second time slot S' may be the same time slot of different code frames, different time slots of the same code frame, or different time slots of different code frames, for example, first, the second time slot S, S 'may be the same slot S when a frame is n, the different frames of the same or a different slot S n is not the same frame slot S n, S m, in other words, the base S time slot table 105 in the preceding frame may be a mobile apparatus 100A receives the n voice message M info, the In the same frame of time slots S m, M info broadcast voice messages to the mobile device when a next frame or slot S n while the next frame of the slot S m, then the received 100B, and therefore, even if The mobile devices 100A and 100B cannot directly perform voice signal transmission. However, the group voice communication between the mobile devices 100A and 100B can be completed by the transmission of the base station 105.
請參照第4圖，第4圖是本發明第三實施例之分時多工存取系統的示意圖。如第4圖所示，分時多工存取系統中包含有基地台105與至少三個行動裝置400A、400B、400C，其中行動裝置400A、400B、400C皆位於基地台105的訊號覆蓋範圍106內，而行動裝置400A與400C係恰好移動至基地台105之訊號覆蓋範圍106的兩側而使兩行動裝置400A、400C之直接傳輸的訊號強度相當微弱(亦即彼此訊號無法有效到達)，因此需要一電子裝置作為中繼器來輔助語音通訊的傳輸，在本實施例中，行動裝置400B係被用來作為一中繼器，用以將行動裝置400A所發出的語音訊息轉達至行動裝置400C，以建立行動裝置400A、400C之間的語音通訊，實作上，行動裝置400A~400C之內部元件與結構皆相同，為避免過於說明過於冗長在此僅以行動裝置400B為例加以深入說明，行動裝置400B包含有一控制單元410、一傳輸單元415與一接收單元420，控制單元410係用以偵測該分時多工存取系統之一基地台105所規範之複數個時槽S1 ~SN ，以判斷該分時多工存取系統是否具有對應於一共波通訊的時槽Sn ，傳輸單元415係耦接至控制單元410並用以於該分時多工存取系統具有時槽Sn 時，經由時槽Sn 廣播一資訊訊號Minfo ，以及接收單元420係耦接至傳輸單元415與控制單元410，並用以於行動裝置400B經由時槽Sn 廣播資訊訊號Minfo 之前，先經由對應於共波通訊之時槽Sn 接收行動裝置400A所廣播的資訊訊號Minfo (例如語音訊息)，以使語音訊息Minfo 再經由行動裝置400B廣播至行動裝置400C，其中行動裝置400A~400C皆位於同一基地台105的訊號覆蓋範圍106內。也就是，以語音通訊來說，行動裝置400B作為收話端，會在前一碼框的時槽Sn 接收行動裝置400A(發話端)的語音訊息Minfo ，接著，行動裝置400B會變成發話端並於下一碼框的時槽Sn 廣播所收到的語音訊息Minfo ，因此，行動裝置400C可有效收聽到行動裝置400A的語音訊息。此外，行動裝置400B在成為發話端時也可於同一碼框的不同時槽或是不同碼框之不同時槽的時間點來廣播語音訊息Minfo ，凡此設計變型皆屬於本發明的範疇。Please refer to FIG. 4, which is a schematic diagram of a time division multiplexing access system according to a third embodiment of the present invention. As shown in FIG. 4, the time division multiplex access system includes a base station 105 and at least three mobile devices 400A, 400B, 400C, wherein the mobile devices 400A, 400B, 400C are located in the signal coverage area 106 of the base station 105. The mobile devices 400A and 400C are just moved to the two sides of the signal coverage area 106 of the base station 105, so that the direct transmission of the signals of the two mobile devices 400A, 400C is relatively weak (that is, the signals cannot be effectively transmitted to each other). An electronic device is required as a repeater to assist in the transmission of voice communication. In this embodiment, the mobile device 400B is used as a repeater for transmitting the voice message sent by the mobile device 400A to the mobile device 400C. In order to establish the voice communication between the mobile devices 400A and 400C, the internal components and structures of the mobile devices 400A to 400C are the same. To avoid over-explaining, the mobile device 400B is only described as an example. The mobile device 400B includes a control unit 410, a transmission unit 415 and a receiving unit 420. The control unit 410 is configured to detect a base of the time division multiplex access system. Standardization of a plurality of 105 time slots S 1 ~ S N, to determine whether the TDM access system corresponding to a total of whether the wave has a communication slot S n, the transmission unit 415 is coupled to the system control unit 410 and configured to When the time division multiplex access system has the time slot S n , an information signal M info is broadcasted through the time slot S n , and the receiving unit 420 is coupled to the transmission unit 415 and the control unit 410 , and is used by the mobile device 400B via the mobile device 400B. Before the time slot S n broadcasts the information signal M info , the information signal M info (for example, a voice message) broadcasted by the mobile device 400A is received via the time slot S n corresponding to the common wave communication, so that the voice message M info is further transmitted through the mobile device. 400B is broadcast to mobile device 400C, wherein mobile devices 400A-400C are all within signal coverage 106 of the same base station 105. That is, in the case of voice communication, the mobile device 400B, as the receiving terminal, receives the voice message M info of the mobile device 400A (the calling terminal) in the time slot S n of the previous code frame, and then the mobile device 400B becomes the calling message. The received voice message M info is broadcasted in the time slot S n of the next code frame. Therefore, the mobile device 400C can effectively listen to the voice message of the mobile device 400A. In addition, the mobile device 400B can also broadcast the voice message M info at different time slots of the same code frame or at different time slots of different code frames when the mobile device is the caller. All the design variants belong to the scope of the present invention.
請參照第5圖，第5圖是本發明第四實施例之分時多工存取系統的示意圖。如第5圖所示，分時多工存取系統中包含有基地台105A、105B與至少三個行動裝置500A、500B、500C，其中行動裝置500A、500B、500C的元件與操作皆與第4圖所示之行動裝置500A、500B、500C相同，在此不另贅述。如第5圖所示，基地台105A、105B的訊號覆蓋範圍106A、106B彼此有一部分重疊，而行動裝置500B係位於或移動至兩基地台105A、105B之部分重疊的訊號覆蓋範圍內，換言之，在分時多工存取系統下，雖然基地台105A、105B的訊號彼此並未同步，然而，行動裝置500B由於係同時位於基地台105A、105B之重疊的訊號覆蓋範圍內，因此行動裝置500B皆可分別與基地台105A、105B的訊號進行同步，由於行動裝置500B可分別與兩基地台105A、105B進行訊號同步，所以行動裝置500B可作為行動裝置500A、500C之語音通訊的中繼器，以轉達分別屬於不同基地台105A、105B之行動裝置500A、500C的語音通話，在本實施例中，行動裝置500A係位於基地台105A的訊號覆蓋範圍106A內而其訊號強度可有效到達行動裝置500B，此外，行動裝置500C係位於基地台105B的訊號覆蓋範圍106B內而其訊號強度可有效到達行動裝置500B，當行動裝置500A廣播語音訊息Minfo ，行動裝置500B會接收其所廣播的語音訊息Minfo ，接著再廣播語音訊息Minfo ，以使行動裝置500C能夠接收到行動裝置500A所發出的語音訊息Minfo ，而行動裝置500C也可以成為主動的發話端而廣播語音訊息Minfo ’，此時行動裝置500B會接收其所廣播的語音訊息Minfo ’，接著再廣播語音訊息Minfo ’，以使行動裝置500A能夠接收到行動裝置500C所發出的語音訊息Minfo ’，因此雙向的語音通訊並無問題。Please refer to FIG. 5. FIG. 5 is a schematic diagram of a time division multiplexing access system according to a fourth embodiment of the present invention. As shown in FIG. 5, the time division multiplexing access system includes base stations 105A, 105B and at least three mobile devices 500A, 500B, 500C, wherein the components and operations of the mobile devices 500A, 500B, 500C are the same as the fourth The mobile devices 500A, 500B, and 500C shown in the figure are the same and will not be further described herein. As shown in FIG. 5, the signal coverage areas 106A, 106B of the base stations 105A, 105B partially overlap each other, and the mobile device 500B is located or moved to a partially overlapping signal coverage range of the two base stations 105A, 105B, in other words, In the time division multiplexing access system, although the signals of the base stations 105A and 105B are not synchronized with each other, the mobile device 500B is located in the overlapping signal coverage of the base stations 105A and 105B at the same time, so the mobile device 500B is The signals can be synchronized with the signals of the base stations 105A and 105B respectively. Since the mobile device 500B can perform signal synchronization with the two base stations 105A and 105B, respectively, the mobile device 500B can serve as a repeater for voice communication of the mobile devices 500A and 500C. In the present embodiment, the mobile device 500A is located in the signal coverage area 106A of the base station 105A and the signal strength can effectively reach the mobile device 500B. In addition, the mobile device 500C is located in the signal coverage area 106B of the base station 105B and its signal strength can effectively reach the mobile device 5 Are 00B, when the mobile device 500A M info broadcast voice messages, mobile device 500B will receive a voice message M info broadcast it, followed by a broadcast voice message M info, 500C such that the mobile device can receive voice messages issued by mobile device 500A M info , and the mobile device 500C can also be the active caller and broadcast the voice message M info ', at which time the mobile device 500B receives the voice message M info ' broadcasted by it, and then broadcasts the voice message M info ', so that The mobile device 500A can receive the voice message M info ' sent by the mobile device 500C, so there is no problem in two-way voice communication.
值得注意的是，行動裝置500A、500C的語音通訊亦可經由基地台105A、105B來達成，請參照第6圖，第6圖是本發明第五實施例之分時多工存取系統的示意圖。如第6圖所示，行動裝置500A廣播語音訊息Minfo ，基地台105A接收其所廣播的語音訊息Minfo ，之後再廣播語音訊息Minfo 至行動裝置500B，而行動裝置500B會接收基地台105A所廣播的語音訊息Minfo ，接著再廣播語音訊息Minfo 至基地台105B，基地台105B接收行動裝置500B所廣播的語音訊息Minfo ，之後再廣播語音訊息Minfo 至行動裝置500C，反之亦然，行動裝置500C傳送語音訊息Minfo ’至行動裝置500A，也會經由基地台105B、行動裝置500B以及基地台105A的轉送，使語音訊息Minfo ’間接地傳送至行動裝置500A。因此，即便在本實施例中行動裝置500A、500B的直接訊號強度彼此無法有效到達以及行動裝置500B、500C的直接訊號強度也彼此無法有效到達，行動裝置500A、500C之間仍可達到雙向的語音通訊。It should be noted that the voice communication of the mobile devices 500A, 500C can also be achieved through the base stations 105A, 105B. Please refer to FIG. 6, which is a schematic diagram of the time division multiplexing access system according to the fifth embodiment of the present invention. . As shown in FIG. 6, mobile device 500A M info broadcast voice messages, the base station 105A receives a voice message M info broadcast it, then after M info broadcast voice messages to the mobile device 500B, the mobile device 500B receives base station 105A The broadcasted voice message M info , then broadcasts the voice message M info to the base station 105B, the base station 105B receives the voice message M info broadcast by the mobile device 500B, and then broadcasts the voice message M info to the mobile device 500C, and vice versa. The mobile device 500C transmits the voice message Minfo ' to the mobile device 500A, and also transmits the voice message Minfo ' indirectly to the mobile device 500A via the transfer of the base station 105B, the mobile device 500B, and the base station 105A. Therefore, even in the present embodiment, the direct signal strengths of the mobile devices 500A, 500B cannot be effectively reached each other and the direct signal strengths of the mobile devices 500B, 500C cannot reach each other effectively, and the two-way voice can still be reached between the mobile devices 500A, 500C. communication.
對於群組語音通訊的安全性而言，只要將語音內容進行加密，而屬於同一群組之行動裝置才共享解密時所需的金鑰，即可避免其他並非是相同群組的電子裝置惡意地擷取該語音內容，因此，本發明之實施例的概念實可有效地應用在多個不同群組之資訊/語音通訊的操作中。另外，前述實施例利用對應於共波通訊時的時槽進行語音的共波通訊，係佔用較少的時槽進行語音通訊，整體的系統效能係較佳，因此，也可同時讓較多的行動裝置參與群組通訊。For the security of group voice communication, as long as the voice content is encrypted, and the mobile devices belonging to the same group share the key required for decryption, other electronic devices that are not the same group can be prevented from maliciously The voice content is captured, and thus the concept of an embodiment of the present invention can be effectively applied to the operation of information/voice communication of a plurality of different groups. In addition, the foregoing embodiment uses the time slot corresponding to the common wave communication to perform the common wave communication of the voice, which occupies less time slots for voice communication, and the overall system performance is better, and therefore, more can be made at the same time. The mobile device participates in group communication.
以上所述僅為本發明之較佳實施例，凡依本發明申請專利範圍所做之均等變化與修飾，皆應屬本發明之涵蓋範圍。The above are only the preferred embodiments of the present invention, and all changes and modifications made to the scope of the present invention should be within the scope of the present invention.
100A、100B、400A~400C、500A~500C．．．行動裝置100A, 100B, 400A~400C, 500A~500C. . . Mobile device
105、105A、105B．．．基地台105, 105A, 105B. . . Base station
106、106A、106B．．．基地台的訊號覆蓋範圍106, 106A, 106B. . . Base station signal coverage
110、410．．．控制單元110, 410. . . control unit
115、415．．．傳輸單元115, 415. . . Transmission unit
305．．．控制電路305. . . Control circuit
310．．．接收電路310. . . Receiving circuit
315．．．傳輸電路315. . . Transmission circuit
420．．．接收單元420. . . Receiving unit
第1圖為本發明第一實施例之分時多工存取系統的示意圖。Figure 1 is a schematic diagram of a time division multiplex access system in accordance with a first embodiment of the present invention.
第2圖為本發明第二實施例之分時多工存取系統的示意圖。2 is a schematic diagram of a time division multiplex access system according to a second embodiment of the present invention.
第3圖為第2圖所示之基地台的方塊示意圖。Figure 3 is a block diagram of the base station shown in Figure 2.
第4圖為本發明第三實施例之分時多工存取系統的示意圖。Figure 4 is a schematic diagram of a time division multiplex access system in accordance with a third embodiment of the present invention.
第5圖為本發明第四實施例之分時多工存取系統的示意圖。Figure 5 is a schematic diagram of a time division multiplex access system in accordance with a fourth embodiment of the present invention.
第6圖為本發明第五實施例之分時多工存取系統的示意圖。Figure 6 is a schematic diagram of a time division multiplex access system according to a fifth embodiment of the present invention.
100A、100B．．．行動裝置100A, 100B. . . Mobile device
105．．．基地台105. . . Base station
106．．．基地台的訊號覆蓋範圍106. . . Base station signal coverage
110．．．控制單元110. . . control unit
115．．．傳輸單元115. . . Transmission unit
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| TW201141292A (en) | 2011-11-16 |
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