CN207819978U - Terminal device and system based on LTE-U communications - Google Patents

Abstract

Present applicant proposes a kind of terminal devices and system based on LTE U communications, wherein includes based on the LTE U terminal devices communicated：Application processor and LTE U modules, wherein, LTE U modules are connect by the first USB interface with application processor；Application processor for the multimedia messages of the pending communication interaction of user to be converted to digital signal, and is sent to LTE U modules by the first USB interface；LTE U modules, the digital signal for sending application processor are converted into the radiofrequency signal of LTE U frequency ranges, are sent to access network equipment by antenna, and be sent to equipment of the core network by access network equipment.Hereby it is achieved that a kind of terminal device for supporting LTE U, improves the flexibility of communication, and communication quality is higher, cost is relatively low.

Description

Terminal device and system based on LTE-U communications

Technical field

This application involves wireless communication technology field more particularly to a kind of terminal devices and system based on LTE-U communications.

Background technology

Private wireless communication system be in order to ensure rail traffic can safety, high density, high efficiency operation, for fixed user (control centre dispatcher, rolling stock section dispatcher, Platform attendant etc.) and mobile subscriber (train operator, the personnel that take precautions against natural calamities, repair people Member) between voice-and-data information exchange reliable means of communication is provided, it is traffic safety, improves conevying efficiency and management Horizontal, improvement service quality provides important guarantee, meanwhile, there are abnormal conditions in rail transportation operation and wire communication occurs When failure, Fire prevention and accident treatment etc. can be also provided rapidly and command required means of communication.

In the related technology, it is usually communicated using communication standards such as LTE-M, however, with mobile Internet, Internet of Things And the rapid development of big data, on the one hand, demand of the mobile communication system to frequency spectrum resource is also growing day by day, frequency spectrum resource it is dilute Scarce property seriously constrains the capacity of LTE network, causes the available network capacity of private wireless communication system limited, on the other hand, State Radio Regulatory Commission is very strict for the management of the proprietary frequency range of urban track traffic so that LTE-M technologies can not It is widely used in private wireless communication system.

Apply for content

The application aims to solve at least one of the technical problems existing in the prior art.

For this purpose, the application proposes a kind of terminal device communicated based on LTE-U and system, a kind of support LTE-U is realized Terminal device, improve the flexibility of communication, and communication quality is higher, cost is relatively low.

The application also proposed one kind and be based on LTE-U communication systems, improve the flexible of private wireless communication system communication Property, and communication quality is higher, cost is relatively low.

The terminal device based on LTE-U communications of the embodiment of the present application, including：Multimedia messages are mutual with digital signal The application processor of conversion, and LTE-U modules that the radiofrequency signal of digital signal and LTE-U frequency ranges is converted mutually；Wherein, The LTE-U modules are connect by the first USB interface with the application processor.

According to terminal device of the embodiment of the present application based on LTE-U communications, realizes and a kind of support the terminal of LTE-U to set It is standby, the flexibility of communication is improved, and communication quality is higher, cost is relatively low.

In addition, the terminal device based on LTE-U communications of the embodiment of the present application, also has following additional technical characteristic：

In one embodiment of the application, further include：The LTE-U modules and described first are connected according to business demand Communication link carries out the USB interface switch of information exchange between USB interface, wherein in the LTE-U modules and the USB The USB interface switch is set between interface.

In one embodiment of the application, further include：Transmit the secondary USB interface of other service signals；USB interface is cut Parallel operation is connect with the secondary USB interface.

In one embodiment of the application, further include：Further include：It is institute according to the control instruction of the application processor State the power module of LTE-U module for power supply, wherein the power module is handled with the LTE-U modules and the application respectively Device connects.

In one embodiment of the application, the application processor includes：Send the first wake-up signal first is general Input/output interface；The LTE-U modules include：The LTE-U modules, which are controlled, according to first wake-up signal enters work The first of state wakes up pin, wherein it is first general to wake up pin and the application processor for the first of the LTE-U modules Input/output interface connects.

In one embodiment of the application, the LTE-U modules further include：Send the second wake-up signal second wakes up Pin；The application processor further includes：The application processor, which is controlled, according to second wake-up signal enters working condition The second universal input/output interface, wherein the second of the LTE-U modules wakes up the of pin and the application processor Two general input/output interface connections.

In one embodiment of the application, the application processor further includes：When knowing that the LTE-U modules power on Send third universal input/output interface of initializing signal；The LTE-U modules further include：According to the initializing signal Carry out the resetting pin of initialization operation, wherein the resetting pin of the LTE-U modules and the third of the application processor are logical It is connected with input/output interface.

In one embodiment of the application, the application processor further includes：The application is known in preset period of time The 4th general input/output interface that processor does not carry out communication interaction transmission sleep signal with the LTE-U modules is connect； The LTE-U modules further include：The radio frequency for entering dormant state according to the sleep signal enables pin, wherein the LTE-U The radio frequency of module enables pin and is connect with the 4th general input/output interface of the application processor.

In one embodiment of the application, the operating mode of the LTE-U modules, including：Mandate auxiliary access module, Dual link pattern, alternatively, assisting access module without authorizing.

The embodiment of the present application based on LTE-U communication systems, including：Equipment of the core network, access network equipment, and it is such as above-mentioned The terminal device based on LTE-U communications described in embodiment.

According to the embodiment of the present application based on LTE-U communication systems, the flexible of private wireless communication system communication is improved Property, and communication quality is higher, cost is relatively low.

The additional aspect of the application and advantage will be set forth in part in the description, and will partly become from the following description It obtains obviously, or recognized by the practice of the application.

Description of the drawings

The application is above-mentioned and/or additional aspect and advantage will become from the following description of the accompanying drawings of embodiments Obviously and it is readily appreciated that, wherein：

Fig. 1 is the LTE_U deployment way schematic diagram of a scenario according to the application one embodiment；

Fig. 2 is the structure diagram according to the terminal device communicated based on LTE-U of the application one embodiment；

Fig. 3 is the structure diagram according to the terminal device of the application another embodiment communicated based on LTE-U；

Fig. 4 is the structure diagram according to the terminal device of the application another embodiment communicated based on LTE-U；And

Fig. 5 is the structure diagram based on LTE-U communication systems according to the application one embodiment.

Specific implementation mode

Embodiments herein is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached The embodiment of figure description is exemplary, and is only used for explaining the application, and should not be understood as the limitation to the application.

In the description of the present application, it is to be understood that term " thickness ", "upper", "lower", "front", "rear", " left side ", The orientation or positional relationship of the instructions such as " right side ", "vertical", "horizontal", "top", "bottom" "inner", "outside" " circumferential direction " is based on attached drawing institute The orientation or positional relationship shown is merely for convenience of description the application and simplifies to describe, do not indicate or imply the indicated dress It sets or element must have a particular orientation, with specific azimuth configuration and operation, therefore should not be understood as the limit to the application System.In addition, defining " first ", the feature of " second " can explicitly or implicitly include one or more this feature. In the description of the present application, unless otherwise indicated, the meaning of " plurality " is two or more.

In the description of the present application, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can Can also be electrical connection to be mechanical connection；It can be directly connected, can also indirectly connected through an intermediary, Ke Yishi Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition Concrete meaning in application.

Based on existing private wireless communication system, as background technology is analyzed, it is known that existing to be communicated based on LTE-M The communication network of standard, it is restricted higher, it cannot be satisfied the Communication Development demand of cordless communication network.

In order to solve the above-mentioned technical problem, present applicant proposes a kind of terminal device based on LTE-U communications, one is realized Kind supports the terminal device of LTE-U, improves the flexibility of communication, and communication quality is higher, cost is relatively low.

Below with reference to the accompanying drawings the terminal device communicated based on LTE-U and system of the embodiment of the present application are described.

It should be understood that TD-LTE technologies develop by 4 generation techniques in technology as mobile communication wireless technology scheme, Frequency spectrum, industry etc. have a clear superiority, and have been carried out as the main technical schemes of rail vehicle ground wireless communication real It applies.And 1785~1805Mhz in LTE frequency spectrums is allocated to rail traffic private radio and led to by the National Radio committee Letter system uses.And it issues proprietary LTE-M specifications and carrys out specification this frequency spectrum use.

However, as analyzing above, with the rapid development of mobile Internet, Internet of Things and big data, mobile communication Demand of the system to frequency spectrum resource is also growing day by day, and the scarcity of frequency spectrum resource seriously constrains the capacity of LTE network.

In view of 5GHz frequency ranges are there is abundant unlicensed spectrum resource, the application efficiently uses unlicensed spectrum money Source efficiently uses, and can solve the contradiction that LTE authorizes frequency spectrum resource insufficient between demand data growth.LTE-U(LTE in Unlicensed Band) by the utilization of carrier aggregation technology realization unlicensed spectrum, substantially increase LTE network capacity.

Wherein, as shown in Figure 1, deployment way of the LTE in unlicensed spectrum includes authorizing auxiliary access (Licensed- Assisted Access, LAA), dual link (DualConnectivity, DC) and without authorize assist access (Standalone) Three kinds.

Wherein, LAA schemes propose two kinds of unlicensed spectrum occupation modes：Only downlink communication (Down link Only, DL-only) and uplink and downlink link communication (Down link and Up link, DL+UL), main thought is to use Carrier aggregation technology will authorize frequency spectrum LTE and unlicensed spectrum LTE-U polymerizations, and key message and guarantee are transmitted using LTE is authorized QoS, LTE-U are then configured to downlink supplement link (DL-only) or Uplink/Downlink (DL+UL), provide additional wireless money Source.

Dual link DC refers to then that user terminal establishes connection on authorizing frequency spectrum and unlicensed spectrum simultaneously, wherein authorizing LTE sends system broadcast information, for realizing the function of control plane；In data plane, small base station data business can award It is sent on power LTE or LTE-U.

And it is then individually to be deployed in LTE to be not present in unlicensed spectrum to authorize without auxiliary access (Standalone) is authorized Frequency spectrum connecting link.

Terminal device provided by the present application based on LTE-U communications, it is hand-held using public network according to the technical characterstic of LTE_U Terminal add LTE-U modules come realize LTE_U private wireless communication system handheld terminal exploitation.Support LTE-U without mandate Assist access module operation.

Wherein, the terminal device of the embodiment of the present application may include mobile phone, it is tablet computer, personal digital assistant, wearable Equipment etc. have various communication functions hand-holdable terminal device, the Wearable can be Intelligent bracelet, smartwatch, Intelligent glasses etc..

Fig. 2 is according to the structure diagram of the terminal device communicated based on LTE-U of the application one embodiment, such as Fig. 2 institutes Show, should include based on the LTE-U terminal devices communicated：Application processor 100 and LTE-U modules 200.Wherein, LTE-U modules are logical The first USB interface is crossed to connect with application processor.

Application processor 100 for the multimedia messages of the pending communication interaction of user to be converted to digital signal, and leads to It crosses USB interface and is sent to LTE-U modules 200.

Wherein, according to the difference of application demand, multimedia messages include one or more in word, picture, video etc..

In practical implementation, the communication interaction between LTE-U modules 200 and application processor 100 is adapted to first The working method of USB interface itself, in one embodiment of the application, between LTE-U modules 200 and the first USB interface also With equipment USB interface switch, USB interface switch, for connecting LTE-U modules 200 and USB interface according to business demand Communication link, make to carry out information exchange between LTE-U modules and application processor 100.

LTE-U modules 200, the digital signal for sending application processor 100 are converted into the radio frequency letter of LTE-U frequency ranges Number, access network equipment is sent to by antenna, and equipment of the core network is sent to by access network equipment.

Certainly, due to the communication of terminal device and core net be it is interactive, thus, in one embodiment of the application, LTE-U modules 200 are additionally operable to receive the radiofrequency signal for the LTE-U frequency ranges that access network equipment is sent by antenna, and radio frequency is believed Number it is converted into digital signal, application processor 100 is sent to by the first USB interface.

In turn, application processor 100 are additionally operable to receive the digital signal that LTE-U modules 200 are sent, and to digital signal It carries out parsing converting multimedia information and feeds back to user.

Specifically, LTE-U modules 200 carry out data interaction by the first USB interface and application processor 100.Wherein, One USB interface is transmitted using corresponding transport protocol, for example, using USB2.0 transport protocols rate (480Mbps), when user needs Will with the users of other private wireless communication systems into row data communication when, user can be needed to interact by application processor 100 The multimedia messages such as text, picture, video and voice messaging be converted to pure digi-tal signal LTE- be sent to by this USB interface U modules 200, the transformation of signal is completed by LTE-U modules 200, then is wirelessly sent from antenna end.Otherwise LTE- The digital information that U modules 200 are received from antenna end can also be transmitted to application processor 100 from this USB port, be handled by application Device 100 completes the conversion of word, picture, video etc..

In practical implementation, above-mentioned first USB interface can be used for the multimedia messages pair such as word, picture, video The transmission for the digital signal answered can be used for transmitting other service signals when the first USB interface is multiplexing functions interface, For example, in addition when the first USB interface is not multiplexing functions interface, corresponding USB can also be arranged certainly in control signal etc. Interface, which carries out other, the transmission of service signal, in one embodiment of the application, as shown in Fig. 2, the terminal device also wraps The secondary USB interface for transmitting other service signals is included, USB interface switch is connect with secondary USB interface, to when with biography When the demand of other defeated service signals, the switching of USB interface switch is realized and secondary USB interface.

It is emphasized that with continued reference to Fig. 2, when business datum to be transmitted is more or type is more, it to be used for it The USB interface of his business data transmission can also be multiple USB interfaces.

In one embodiment of the application, with continued reference to Fig. 2, LTE-U modules 200 are connect with power module 300, power supply Module 300 is connect with application processor 100, power module 300, for being LTE-U according to the control instruction of application processor 100 Module 200 is powered.

In this example, it is powered for LTE-U modules 200 by the control instruction of application processor 100, may be implemented to apply Processor 100 is powered when needing and LTE-U modules 200 carry out communication interaction for LTE-U modules 200, need not be with When LTE-U modules 200 carry out communication interaction, does not power for LTE-U modules 200, make full use of power supply as a result, improve The cruising ability of terminal device.

In one embodiment of the application, with continued reference to Fig. 2, the first of LTE-U modules 200 wakes up pin 210 and answers Connected with 110 interface of the first universal input/output of processor 100,110 interface of the first universal input/output, for Before LTE-U modules 200 send digital signal, wakes up pin 210 to first and send the first wake-up signal, control LTE-U modules 200 enter working condition.

In the present embodiment, application processor 100 passes through first when needing to send digital signal to LTE-U modules 200 It waking up pin 210 and wakes up the first wake-up signal of transmission of pin 210 to first, control LTE-U modules 200 enter working condition, When application processor 100 need not send digital signal to LTE-U modules 200, LTE-U modules 200 can not be waken up so that LTE-U modules 200 in a dormant state, have saved electricity as a result, help to improve the cruising ability of terminal device.

In one embodiment of the application, with continued reference to Fig. 2, the second of LTE-U modules 200 wakes up pin 220 and answers It is connected with the second universal input/output interface 120 of processor 100, second wakes up pin 220, for application processor Before 100 send digital signal, the second wake-up signal is sent to the second universal input/output interface 120, controls application processor 100 enter working condition.

In the present embodiment, LTE-U modules 200 pass through second when needing to send digital signal to application processor 100 It wakes up pin 220 and sends the second wake-up signal to the second universal input/output interface 120, control application processor 100 enters work Make state, when LTE-U modules 200 need not send digital signal to application processor 100, application processor can not be waken up 100 so that application processor 100 in a dormant state, has saved electricity as a result, helps to improve the continuation of the journey energy of terminal device Power.

In one embodiment of the application, with continued reference to Fig. 2, the resetting pin 230 of LTE-U modules 200 and at Third universal input/the output interface 130 for managing device 100 connects, third universal input/output interface 130, for knowing LTE- When U modules 200 power on, initializing signal is sent to resetting pin 230, control LTE-U modules 200 carry out initialization operation.

In the present embodiment, there is order control between LTE-U modules 200 and application processor 100 in addition to usb data communication Pin processed is used for initializing LTE-U modules 200, third universal input/output interface 130, for knowing LTE-U modules 200 When powering on, control LTE-U modules 200 carry out initialization operation, so that LTE-U modules 200 enter work original state.Its In, since LTE-U modules 200 are to realize Auto Power On/power-off operation with power supply electrifying/lower electricity, so in interface electricity Switching on and shutting down operation is not needed in road.

In one embodiment of the application, with continued reference to Fig. 2, the radio frequency of LTE-U modules 200 enables pin 240 and answers It is connected with the 4th general input/output interface 140 of processor 100, the 4th general input/output interface 140, for default Know that application processor 100, without carrying out communication interaction, enables the transmission of pin 240 to radio frequency and stop with LTE-U modules 200 in period Dormancy signal, control LTE-U modules 200 enter dormant state.

In the present embodiment, when application processor 100 and LTE-U modules 200 do not carry out communication friendship in a long time When mutual, control LTE-U modules 200 enter dormant state, have saved electricity, have helped to improve the cruising ability of terminal device.

Based on above-described embodiment it is found that also having in addition to usb data communication between LTE-U modules 200 and application processor 100 Order controlling switch is used for initializing LTE-U modules 200 and operation arousal function.As a kind of possible realization method, connect Mouth definition is as shown in Figure 3.

Wherein, LTE-U modules 200 and application processor 100 can reach power saving purpose by wake-up mechanism.Work as LTE-U When not having data service between module 200 and application processor 100, LTE-U modules 200 and application processor 100 enter simultaneously Sleep pattern can pass through WAKE_ to reach power saving purpose when LTE-U modules 200 and application processor 100 have business demand UP/WAKE_IN function pin feet realize the wake-up of LTE-U modules 200 and application processor 100, and carry out data transmission leading to Letter.

The terminal device based on LTE-U communications of the embodiment of the present application as a result, is provided and a kind of is communicated based on LTE-U Terminal device, communicative flexibility is stronger, and terminal device provided by the embodiments of the present application supports LTE-U without the fortune for authorizing auxiliary mode Row.

The spectral bandwidth that the terminal device of the embodiment of the present application can work is 5470MHz~5850MHz, is based on the prior art For middle use LTE-M communication mechanisms frequency spectrum mainly uses this 20M bandwidth of 1785~1805MHz, frequency spectrum is wider, and access information is more It is more.LTE-U technologies and LTE-M technologies belong to same class technology, LTE_U interface and encryptions in the air, anti-interference, when transmission Prolong, advantage is suitable with LTE_M in terms of packet loss and high-speed mobile performance, still, LTE-U due to the unauthorized frequency range of use, It is more flexible in terms of frequency range acquisition.It is analyzed from performance, urban track traffic private wireless communication system business can be met and held Load demand, have it is safe, it is at low cost, the characteristics of high comprehensive performance.

As a kind of possible realization method, the hardware realization block diagram of terminal device is as shown in figure 4, as shown in Figure 4 In a kind of realization method, the realization platform using high pass MSM8953 platforms as terminal device application processor 100 carries China It is em680-950 modules as LTE-U modules 200.TI TS3USB30RSWR USB Switch are coordinated to complete application processor USB interface switch uses handoff functionality between 100 and LTE-U modules 200.Specific implementation can refer to Fig. 4 and realize block diagram.

In conclusion the terminal device based on LTE-U communications of the embodiment of the present application, realizes and a kind of supporting LTE-U's Terminal device improves the flexibility of communication, and communication quality is higher, and cost is relatively low.

In order to realize that above-described embodiment, the application also proposed one kind and being based on LTE-U communication systems, Fig. 5 is according to this Shen Please one embodiment the structure diagram based on LTE-U communication systems, as shown in figure 5, including core based on LTE-U communication systems Net equipment 2000, access network equipment 3000 and the terminal device 1000 based on LTE-U communications as described in above-described embodiment.

Specifically, as shown in figure 5, private wireless communication system is divided into core side, the access side and part of end side three, Wherein, core side includes equipment of the core network 2000, wherein equipment of the core network 2000 may include the server for providing communication service. It includes access network equipment 3000 to access side, and access network equipment 3000 may include base station, wherein is taken by communication service and base station It is engaged in the influence etc. of area, the quantity of base station can be multiple, wherein base station includes base station server and antenna, base station and terminal Multiple terminals in side carry out communication interaction using antenna.End side includes logical based on LTE-U as described in above-described embodiment The terminal device 1000 of letter.

In conclusion the embodiment of the present application based on LTE-U communication systems, improve private wireless communication system communication Flexibility, and communication quality is higher, cost is relatively low.In the description of this specification, reference term " one embodiment ", " some The description of embodiment ", " illustrative examples ", " example ", " specific example " or " some examples " etc. means to combine the embodiment Or example particular features, structures, materials, or characteristics described are contained at least one embodiment or example of the application. In this specification, schematic expression of the above terms may not refer to the same embodiment or example.Moreover, the tool of description Body characteristics, structure, material or feature can be combined in any suitable manner in any one or more of the embodiments or examples.

While there has been shown and described that embodiments herein, it will be understood by those skilled in the art that：Not In the case of being detached from the principle and objective of the application a variety of change, modification, replacement and modification can be carried out to these embodiments, this The range of application is limited by claim and its equivalent.

Claims (10)

1. a kind of terminal device based on LTE-U communications, which is characterized in that including：

The application processor that multimedia messages and digital signal are converted mutually, and penetrating digital signal and LTE-U frequency ranges The LTE-U modules that frequency signal is converted mutually；

Wherein, the LTE-U modules are connect by the first USB interface with the application processor.

2. terminal device as described in claim 1, which is characterized in that further include：

Communication link between the LTE-U modules and first USB interface, which is connected, according to business demand carries out information exchange USB interface switch,

Wherein, the USB interface switch is set between the LTE-U modules and the USB interface.

3. terminal device as claimed in claim 2, which is characterized in that further include：

Transmit the secondary USB interface of other service signals；

USB interface switch is connect with the secondary USB interface.

4. terminal device as described in claim 1, which is characterized in that further include：

According to the power module that the control instruction of the application processor is the LTE-U module for power supply, wherein the power supply mould Block is connect with the LTE-U modules and the application processor respectively.

5. terminal device as described in claim 1, which is characterized in that

The application processor includes：Send the first universal input/output interface of the first wake-up signal；

The LTE-U modules include：The LTE-U modules, which are controlled, according to first wake-up signal enters the first of working condition Pin is waken up,

Wherein, the first of the LTE-U modules wakes up first universal input/output interface company of the pin with the application processor It connects.

6. terminal device as described in claim 1, which is characterized in that

The LTE-U modules further include：Send the second wake-up signal second wakes up pin；

The application processor further includes：The application processor, which is controlled, according to second wake-up signal enters working condition Second universal input/output interface,

Wherein, the second of the LTE-U modules wakes up second universal input/output interface company of the pin with the application processor It connects.

7. terminal device as claimed in claim 6, which is characterized in that

The application processor further includes：The third that initializing signal is sent when knowing that the LTE-U modules power on is general defeated Enter/output interface；

The LTE-U modules further include：The resetting pin of initialization operation is carried out according to the initializing signal,

Wherein, the resetting pin of the LTE-U modules is connect with the third of application processor universal input/output interface.

8. terminal device as claimed in claim 7, which is characterized in that

The application processor further includes：Know in preset period of time the application processor and the LTE-U modules not into Row communication interaction sends the 4th general input/output interface connection of sleep signal；

The LTE-U modules further include：The radio frequency for entering dormant state according to the sleep signal enables pin,

Wherein, the radio frequency of the LTE-U modules enables fourth general input/output interface company of the pin with the application processor It connects.

9. terminal device as claimed in claim 8, which is characterized in that the operating mode of the LTE-U modules, including：

Auxiliary access module, dual link pattern are authorized, alternatively, assisting access module without authorizing.

10. one kind being based on LTE-U communication systems, which is characterized in that including：

Equipment of the core network, access network equipment, and the terminal device based on LTE-U communications as described in claim 1-9 is any.