GSM base station, communication system and data transmission method
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a GSM base station, a communications system, and a data transmission method.
Background
In general, a GSM (Global System For Mobile Communications) base station is a full duplex System that allows data to be transmitted simultaneously in both directions.
In the prior art, a GSM base station is manufactured by using a base station chip in a full-duplex working mode, but the manufacturing cost of the base station chip is high. If the small GSM base station is relatively cost sensitive, for example a home type base station for home applications, an enterprise/indoor base station for small or retail enterprise applications, an outdoor base station for public place applications. Small GSM base stations can improve user network experience in homes, offices, and public places, but at the same time small GSM base stations are also cost sensitive. If the base station chip is adopted, the cost is increased, so that the cost of the GSM base station is very necessary to be reduced.
Disclosure of Invention
One of the objectives of the embodiments of the present invention is to provide a GSM base station, a communication system, and a data transmission method, so as to solve the technical problem of high cost of the GSM base station in the prior art.
In a first aspect, an embodiment of the present invention provides a GSM base station, including a wired interface, an antenna, and a mobile phone chip module;
the mobile phone chip module is connected with the wired interface and the antenna and comprises at least two mobile phone chips; each mobile phone chip is used for receiving uplink data from the antenna, adding the unique identification number of the mobile phone chip into the uplink data, transmitting the uplink data to the wired interface, and transmitting the downlink data through the antenna after receiving the downlink data from the wired interface; the downlink data transmitting time slot of any one mobile phone chip is different from the downlink data transmitting time slots of other mobile phone chips, and the uplink data receiving time slot of any one mobile phone chip is different from the uplink data receiving time slots of other mobile phone chips;
the wired interface is used for acquiring a unique identification number carried by downlink data after the downlink data are received, and transmitting the downlink data to a mobile phone chip corresponding to the unique identification number according to the unique identification number; or,
and acquiring a transmitting time slot carried by the downlink data, and transmitting the downlink data to a mobile phone chip corresponding to the transmitting time slot.
Optionally, each of the handset chips includes a parallel interface connected to the wired interface.
Optionally, any one of the handset chips comprises a first serial communication terminal and a second serial communication terminal, wherein,
the first serial communication end of any mobile phone chip except the first level is connected with the second serial communication end of the mobile phone chip at the upper level of the mobile phone chip;
and the second serial communication end of the last-stage mobile phone chip is connected with the wired interface.
Optionally, the transmission time slots of two adjacent handset chips are not continuous, and the reception time slots are not continuous.
Optionally, the number of transmission timeslots of one or more of the at least two handset chips is multiple.
Optionally, the GSM base station further includes a clock source, each of the mobile phone chips further includes a clock source interface, and all clock source interfaces are connected to the clock source.
Optionally, one of the at least two mobile phone chips performs time synchronization with an external GSM network adjacent to the GSM base station, and serves as a time slot synchronization source of the GSM base station, so that other mobile phone chips except the mobile phone chip perform work time slot synchronization when receiving a broadcast signal transmitted by the mobile phone chip.
In a second aspect, an embodiment of the present invention further provides a communication system, which is manufactured by using the GSM base station.
In a third aspect, an embodiment of the present invention further provides a data transmission method for a GSM base station, where the GSM base station includes a wired interface, an antenna, and a mobile phone chip module;
the mobile phone chip module is connected with the wired interface and the antenna and comprises at least two mobile phone chips; each mobile phone chip receives uplink data from the antenna, adds a unique identification number of the mobile phone chip into the uplink data, transmits the uplink data to the wired interface, and transmits downlink data through the antenna after receiving the downlink data from the wired interface; the downlink data transmitting time slot of any one mobile phone chip is different from the downlink data transmitting time slots of other mobile phone chips, and the uplink data receiving time slot of any one mobile phone chip is different from the uplink data receiving time slots of other mobile phone chips;
after receiving downlink data, the wired interface acquires a unique identification number carried by the downlink data and transmits the downlink data to a mobile phone chip corresponding to the unique identification number according to the unique identification number; or,
and acquiring a transmitting time slot carried by the downlink data, and transmitting the downlink data to a mobile phone chip corresponding to the transmitting time slot.
Optionally, one of the at least two mobile phone chips performs time synchronization with an external GSM network adjacent to the GSM base station, and serves as a time slot synchronization source of the GSM base station, so that other mobile phone chips except the mobile phone chip perform work time slot synchronization when receiving a broadcast signal transmitted by the mobile phone chip.
Compared with the prior art, the invention utilizes at least two mobile phone chips to be connected in parallel or in series, and distributes different working time slots to the at least two mobile phone chips, so that each mobile phone chip can independently transmit or receive data without influencing the work of other mobile phone chips; in the plurality of mobile phone chips, part of the mobile phone chips receive data, and simultaneously part of the mobile phone chips transmit data, so that the GSM base station integrally works in full duplex mode. The invention uses at least two mobile phone chips with lower cost to replace a base station chip with higher price, and can solve the technical problem of higher cost of the GSM base station in the prior art.
Drawings
The features and advantages of the present invention will be more clearly understood by reference to the accompanying drawings, which are illustrative and not to be construed as limiting the invention in any way, and in which:
fig. 1 shows a schematic structural diagram of a GSM base station in an embodiment of the present invention;
fig. 2 is a schematic structural diagram of another GSM base station in the embodiment of the present invention;
fig. 3 is a flowchart illustrating a data transmission method of a GSM base station in an embodiment of the present invention.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
In a first aspect, an embodiment of the present invention provides a GSM base station, as shown in fig. 1, including a wired interface, an antenna, and a mobile phone chip module;
the mobile phone chip module is connected with the wired interface and the antenna and comprises at least two mobile phone chips; each mobile phone chip is used for receiving uplink data from the antenna, adding the unique identification number of the mobile phone chip into the uplink data, transmitting the uplink data to the wired interface, and transmitting the downlink data through the antenna after receiving the downlink data from the wired interface; the downlink data transmitting time slot of any one mobile phone chip is different from the downlink data transmitting time slots of other mobile phone chips, and the uplink data receiving time slot of any one mobile phone chip is different from the uplink data receiving time slots of other mobile phone chips;
the wired interface is used for acquiring a unique identification number carried by downlink data after the downlink data are received, and transmitting the downlink data to a mobile phone chip corresponding to the unique identification number according to the unique identification number; or,
and acquiring a transmitting time slot carried by the downlink data, and transmitting the downlink data to a mobile phone chip corresponding to the transmitting time slot.
It can be understood that, in the embodiment of the present invention, the uplink data is data received by the antenna from the mobile phone of the user; the downlink data refers to data received by the GSM base station from a device (e.g., a GSM core network device) connected to the GSM base station, and may be from inside the GSM base station.
It is to be understood that, in the embodiment of the present invention, the number of the at least two mobile phone chips may be set according to specific situations, and the present invention is not limited thereto.
It can be understood that, in the embodiment of the present invention, the transmission time slot and the reception time slot allocated to the mobile phone chip respectively correspond to the unique identification number of the mobile phone chip, and a corresponding table of the working time slot and the unique identification number is established. In the embodiment of the invention, the corresponding table of the working time slot and the unique identification number is arranged in the wired interface, and the wired interface can search the other party from one party of the working time slot and the unique identification number according to the corresponding table. Those skilled in the art can set the setting according to the specific situation, and the invention is not limited.
The invention makes use of at least two mobile phone chips to connect in parallel and allocates different transmitting time slots and receiving time slots to the at least two mobile phone chips, so that each mobile phone chip can independently transmit and receive data without influencing the work of other mobile phone chips. In practical application, the GSM base station requires continuous transmission, when a plurality of mobile phone chips are provided, a part of the mobile phone chips can receive data, and a part of the mobile phone chips transmit data, and each downlink time slot must be transmitted, and the whole GSM base station is in a full-duplex working state. The invention uses at least two mobile phone chips with lower cost to replace a base station chip with higher price, and can solve the technical problem of higher cost of the GSM base station in the prior art.
Optionally, any one of the handset chips further comprises a first serial communication terminal 1 and a second serial communication terminal 2, as shown in fig. 2, wherein,
any one of the handset chips comprises a first serial communication terminal 1 and a second serial communication terminal 2, wherein,
the first serial communication end 1 of any mobile phone chip except the first level is connected with the second serial communication end 2 of the mobile phone chip at the upper level;
and the second serial communication end 2 of the last-stage mobile phone chip is connected with a wired interface.
In the embodiment of the invention, at least two mobile phone chips are connected in series, namely, a first serial communication end 1 and a second serial communication end 2 of two adjacent mobile phone chips are connected. Any stage of mobile phone chip receives uplink data from the antenna, adds the unique identification number of the mobile phone chip into the uplink data, then sequentially transmits the uplink data added with the unique identification number to at least two mobile phone chips, and then transmits the uplink data to the wired interface.
In practical application, a person skilled in the art can select to connect at least two mobile phone chips in series or in parallel according to actual conditions, or can connect part of the mobile phone chips in series and connect part of the mobile phone chips in parallel.
The GSM base station provided by the embodiment of the invention consists of at least two chips. In practical application, the invention can increase the number of mobile phone chips in order to support more concurrent users. In the following embodiment, the working process of the present invention is described in detail by using 6 mobile phone chips for serial connection.
In practical application, as shown in fig. 2, at this time, the integer N is 6, each of the 6 mobile phone chips includes a first serial communication terminal 1 and a second serial communication terminal 2, where the second serial communication terminal 2 of the first mobile phone chip is connected to the first serial communication terminal 1 of the second mobile phone chip, the second serial communication terminal 2 of the second mobile phone chip is connected to the first serial communication terminal 1 of the third mobile phone chip, and so on, the second serial communication terminal 2 of the fifth mobile phone chip is connected to the first serial communication terminal 1 of the sixth mobile phone chip, the second serial communication terminal 2 of the sixth mobile phone chip is connected to a wired interface, and the wired interface is connected to other devices.
In the prior art, a GSM base station belongs to a full-duplex working mode, and a mobile phone chip belongs to a half-duplex working mode, so that when the mobile phone chip is used for replacing a traditional base station chip, a problem that data cannot be transmitted and received simultaneously exists. Therefore, in the embodiment of the present invention, the 6 mobile phone chips are set in different working timeslots, as shown in table 1.
Table 1 mobile phone chip working time slot distribution table
The mobile chip 1 is used as a Broadcast Control Channel (BCCH) when transmitting signals, and operates in the downlink working time slot 0 at this time, and is used as a Random Access Channel (RACH) when receiving information, and operates in the downlink working time slot 3. The mobile phone chip 1 is used as a broadcast control channel for broadcasting the public information to all mobile users from the GSM base station provided by the embodiment of the present invention, which indicates that the GSM base station provided by the embodiment of the present invention is working, including the normal working or abnormal working condition. When the mobile phone chip 2 transmits a signal, it is used as a Traffic Channel (TCH), and at this time, it works in the downlink working time slot 1, and when the signal is received, it is also used as a Traffic Channel (TCH), and it works in the downlink working time slot 4. The mobile phone chips 3-5 have the same working mode as the mobile phone chip 2, but the data transmitting and receiving processes are in different working time slots. The mobile phone chips 2-5 are used as service channels and are arranged in different working time slots. When the GSM base station works, if uplink data is received in a certain working time slot, the uplink data is transmitted to a corresponding mobile phone chip, the unique identification code of the uplink data is added into the uplink data by the mobile phone chip, then the uplink data is transmitted to a next-stage mobile phone chip by the mobile phone chip and finally transmitted to a wired interface, and at the moment, the wired interface can add the receiving time slot of the mobile phone chip into the uplink data and continuously transmit the uplink data to other equipment. For example, data packets from the mobile phone chip 1 all include the unique identification number 1, data packets from the mobile phone chip 2 all include the unique identification number 2, and so on, so as to realize the identification of the uplink data and the external data.
The mobile phone chip 6 works in a downlink working time slot of 5-7, when the GSM base station has no information transmission, the mobile phone chip 6 uniformly transmits a DUMMY signal to indicate that no information transmission exists at present, and the GSM base station has no load in the working time slot; and, at this time, the mobile phone chip 6 does not receive a signal. In addition, the mobile phone chip 6 works in a standby channel, can cope with the situation of excessive uplink data, and is convenient to upgrade the GSM base station. When the mobile phone chips 2-5 are not loaded, the DUMMY signal is also transmitted as the mobile phone chip 6, which indicates that the GSM base station is not loaded in the time slot now, and the detailed description is omitted here.
In practical application, the transmitting time slot of each mobile phone chip is different from the transmitting time slots of other mobile phone chips, and the receiving time slot of each mobile phone chip is different from the receiving time slots of other mobile phone chips. For example, the working time slot of the mobile phone chip 1 for transmitting data is the downlink working time slot 0, and the working time slot for receiving data is the downlink working time slot 3. Therefore, the difference between the working time slots of the mobile phone chip 1 for transmitting data and receiving data is 3 working time slots, and the data transmitting and receiving processes are not influenced. The method for allocating the working time slots for the mobile phone chip 1 allocates the working time slots for the mobile phone chips 2-6, can meet the requirements of practical application, and is not described herein.
Optionally, when the wired interface receives downlink data, acquiring a unique identification number carried by the downlink data, and transmitting the downlink data to a mobile phone chip corresponding to the unique identification number according to the unique identification number; or acquiring a transmitting time slot carried by the downlink data, acquiring a unique identification number corresponding to the working time slot, and transmitting the downlink data to the corresponding mobile phone chip according to the unique identification number. For example: when the mobile phone chip 2 receives the uplink data and transmits the uplink data to the wired interface, the uplink data sequentially passes through the mobile phone chip 3, the mobile phone chip 4, the mobile phone chip 5 and the mobile phone chip 6. When the wired interface receives the downlink data and transmits the downlink data to the mobile phone chip 2 corresponding to the working time slot, the downlink data sequentially passes through the mobile phone chip 6, the mobile phone chip 5, the mobile phone chip 4 and the mobile phone chip 3.
In practical application, the embodiment of the present invention may further set that the transmission time slots of at least two mobile phone chips are discontinuous, and the reception time slots are also discontinuous. When a user requests for a call, mobile phone chips are dynamically allocated to the user, so that the load of each mobile phone chip is more balanced. For example, when only one user needs to perform voice call, the mobile phone chip 2 can be selected to work; when two users exist, the mobile phone chip 2 and the mobile phone chip 3 can be selected to work; when there are multiple users, distribute multiple mobile phone chips. Through dynamic allocation of the mobile phone chips, one or more mobile phone chips can be prevented from being in a working state all the time, and other mobile phone chips do not work, so that the load of each mobile phone chip is more balanced, and the service life of the GSM base station is prolonged. Of course, a person skilled in the art can also set the usage order of the mobile phone chips, and allocate the uplink data in a polling mode or a random mode, which can also solve the above technical problems and achieve similar technical effects. The invention is not limited.
Optionally, in the embodiment of the present invention, one of the at least two mobile phone chips performs time synchronization with an external GSM network adjacent to the GSM base station, and the mobile phone chip is used as a time slot synchronization source of the GSM base station. The mobile phone chip transmits broadcast signals to other mobile phone chips, so that the other mobile phone chips except the mobile phone chip carry out working time slot synchronization when receiving the broadcast signals. For example, in the embodiment of the present invention, as shown in table 1, the mobile chip 1 keeps synchronization with the external communication network connected to the GSM base station, and the mobile chip 1 transmits the BCCH signal as the synchronization signal source of the mobile chips 2 to 6, so that the mobile chips 2 to 6 keep synchronization with the operating time slots thereof. In practical application, the embodiment of the invention can also adopt an independent synchronization module to transmit synchronization signals to the mobile phone chips 1-6 to realize the synchronization of the working time slots of the 6 mobile phone chips.
In practical application, in the GSM base station provided by the present invention, each mobile phone chip allocates different transmission time slots and reception time slots, so that the time of the data transmission process and the time of the data reception process of all the mobile phone chips are not overlapped. Therefore, in the embodiment of the invention, the antenna interfaces of all the mobile phone chips are directly connected to the same antenna, thereby simplifying the circuit structure of the GSM base station.
In practical application, at least two mobile phone chips with the same model are adopted in the embodiment of the invention, so that clock sources and power supplies of all mobile phone chips can be connected to the same clock source and power supply. Of course, at least two mobile phone chips with different models can be adopted, and the requirements of each mobile phone chip on a clock source and a power supply need to be met during configuration. Those skilled in the art can set the setting according to the specific situation, and the invention is not limited.
In a second aspect, an embodiment of the present invention further provides a communication system, which is manufactured by using the GSM base station. For example, the GSM base station provided in the embodiment of the present invention may be added to a 4G base station, and the GSM base station and the 4G base station may form a communication system of a 2G +4G dual-mode base station; the GSM base station provided by the embodiment of the present invention may also be added to a router to form a router with the GSM base station function. Of course, those skilled in the art may also apply the communication system provided in the embodiment of the present invention to other systems according to actual situations to form a more complex communication system, and the present invention is not limited thereto.
It can be seen that the communication system provided in the embodiment of the present invention may correspond to the GSM base station in the foregoing, and thus, reference may be made to the foregoing for specific embodiments thereof, which are not described herein again.
In a third aspect, an embodiment of the present invention further provides a data transmission method for a GSM base station, where the GSM base station includes a wired interface, an antenna, and a mobile phone chip module; the mobile phone chip module is connected with the wired interface and the antenna and comprises at least two mobile phone chips; the method comprises the following steps:
each mobile phone chip receives uplink data from an antenna, adds the unique identification number of the mobile phone chip into the uplink data, transmits the uplink data to a wired interface, and transmits downlink data through the antenna after receiving the downlink data from the wired interface; the downlink data transmitting time slot of any one mobile phone chip is different from the downlink data transmitting time slots of other mobile phone chips, and the uplink data receiving time slot of any one mobile phone chip is different from the uplink data receiving time slots of other mobile phone chips;
after receiving the downlink data, the wired interface acquires a unique identification number carried by the downlink data and transmits the downlink data to a mobile phone chip corresponding to the unique identification number according to the unique identification number; or,
and acquiring a transmitting time slot carried by downlink data, and transmitting the downlink data to a mobile phone chip corresponding to the transmitting time slot.
In practical applications, the data transmission method for the GSM base station provided in the embodiment of the present invention is implemented based on the GSM base station, and based on the same purpose, the same technical problem is solved, and the same technical effect is achieved, which is not described in detail in this embodiment.
In the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The term "plurality" means two or more unless expressly limited otherwise.
Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations fall within the scope defined by the appended claims.