CN100403821C - Base station and its realizing method, and base station detecting system/network system - Google Patents
Base station and its realizing method, and base station detecting system/network system Download PDFInfo
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Abstract
The present invention provides a base station and an implementation method thereof. The present invention comprises the following steps that the Ethernet is used as an exchange platform of the base station to pack and unpack voice or data messages in a multipath low speed, and an IP technology is used to carry the messages so as to achieve the goal of applying the IP technology to the base station. The present invention introduces the IP and Ethernet exchanging technology in the base station, implements the network system function by the software processing, and supports a plurality of radio systems by the platform realized by the technology of the base station. For manufacturers, the present invention can accelerate the development of the base station, and simultaneously, the present invention is convenient for the various tests of the base station. For users, the present invention relative to the traditional base station has advantages in areas of networking in low cost and customizing network service.
Description
Technical field
The present invention relates to the mobile communication system field, refer to a kind of base station and test macro/network system thereof especially.
Background technology
Along with the progress of software engineering and processor processing ability, how to make full use of the disposal ability of processor, use software replace hardware to realize particular procedure, more and more paid close attention to by people.The superiority of using software approach to realize is to reduce hardware cost, simultaneously can the customized network function, abundant business is provided.Because the IP technology is aspect the software realization, the absolute predominance that shows with respect to legacy circuit-switched networks network and atm network, so people estimate that NGN system will be a complete IP network.
The conventional wireless base station realizes based on circuit switching and ATM switching technology usually, and different base station is based on different software and hardwares, the software and hardware complexity.This causes the test process complexity loaded down with trivial details, even the partial test project is difficult to test.The traditional base station depends on the specialized hardware platform simultaneously, and network interface is the self defined interface of each manufacturer, can not realize interconnecting on the level of base station.
Second generation base station uses the TDM mode to realize the interface of base station and network, and the TDM mode is also referred to as circuit exchange mode.Second generation base station comprises global system for mobile communications GSM, CDMA mobile communication systems CDMA, and some digital radio access communication system.
Gsm system is the wireless communication system of FDM and TDMA combination.Because shared wireless network resource must use multiple access technology to make the shared common frequency band of numerous users.Time division multiple access TDMA is meant on a wireless carrier, and channel was cut apart by the time, and each signal takies gap (time slot) sometime in order, realizes communication with different time slots.Be that multiple signals utilize same channel to transmit independently of one another at different time.Compare with the TDMA technology, code division multiple access CDMA realizes communication with different code sequences, by the multiple access of different sign indicating number sequence realizations.The capacity of cdma system individual channel and spread spectrum algorithm quality, spatial interference size, frequency bandwidth all have direct relation.CDMA does not resemble and user profile is separated with the time from frequency FDMA, the TDMA, and CDMA can transmit a plurality of users' information simultaneously on a channel.
Each carrier frequency bandwidth of GSM is 200KHz, and the frequency range at carrier frequency place is also referred to as " frequency ".Can hold 124 and 374 carrier frequency respectively in 900M and two band limits of 1800M, the total bandwidth of these two band limits then is respectively 25MHz and 75MHz.Each base station is a sub-district, and several frequencies are used in each sub-district usually, to satisfy communication requirement.
The FDM of GSM has two implications, and first implication is, different frequent points uses different frequencies, and neighbor cell can prevent to produce frequency interferences by using different frequencies; Second implication is that even on a frequency, the uplink and downlink signal also is in different frequencies.As 900M GSM base station down frequency range is 935～960MHz, and upstream frequency range is 890～915MHz, and therefore the uplink and downlink frequency of same frequency differs 45MHz.By frequency separation frequency and upstream and downstream, can avoid interfering with each other.The single carrier frequency of GSM is cut apart the realization multiple access with the time, and every carrier frequency provides 8 channels, comprises 8 time slots in the promptly wireless mouthful of tdma frame structure.
The GSM base station is connected to base station controller BSC by an E1 line, and voice, user data, signaling, maintenance use different E1 time slots to transmit respectively.The E1 communication interface comprises 0～31 time slot, and common the 31st time slot is a maintenance link, and other time slot is signaling link and user speech, user data.The full rate user speech takies a 16Kbit sub-slots (4 voice take one road 64K time slot), and half-rate speech takies a 8Kbit sub-slots (8 voice take one road 64K time slot), and user data takies one or more voice time slot.
Use different time-gap to distinguish data in the GSM base station, its core switching method is the TDM exchange.This switching method is with the ATM exchange shortcoming that exchange is compared with Ethernet: exchange capacity is little, speed is low, control method is complicated, realize cost higher (because needing to use special-purpose member).
As shown in Figure 1, a gsm system is become by three groups of subsystems, i.e. operation maintenance center's (subsystem OSS is supported in operation), base station sub-system (BSS), network subsystem (NSS).Base station sub-system BSS links to each other with travelling carriage by wireless mouthful, is responsible for the management of wireless transmission reception and Radio Resource.Network subsystem NSS is the core of whole system, and it is between the GSM mobile subscriber and the function of communicating by letter and playing exchange, be connected and manage between mobile subscriber and other communication network user.Finish call treatment, telecommunication management, mobile management, part RRM, security management, user data and equipment control, station message recording processing, common channel signalling processing and local runtime maintenance etc.Attaching position register HLR among the NSS, the AUC of AUC finish data base administration, MAP transaction and protocol processes function.VLR Visitor Location Register VLR among the NSS is a real-time dataBase system.It is responsible for storing and managing the relevant data of current active the mobile subscriber in MSC/VLR zone, and the user security management function is provided.Operation supports subsystem OSS to finish the operation and maintenance of mobile subscriber's management, mobile device management, system.
Gsm system is a huge and full-order system.Gsm system needs large number quipments to be connected to each other, and all devices normal operation just can be finished function corresponding.Therefore, it has following shortcoming inevitably:
1, whole communication system is very complicated, and difficulty of test is big.Must build complicated network environment in the test, and could test relevant device by the instrumentation of costliness.
2, system uses the circuit switching platform, and the efficient of transfer of data is low, is not suitable for data communication applications.
3, the implementation method complexity of base station and related network device, hardware cost and development cost height.
4, the network equipment is huge, needs special infrastructure such as machine room, and customer investment is big.
5, the network equipment is too many, requires the user must carry out special maintenance.It is very high to set up small-scale private wireless networks network cost, and general unit such as public security, electric power, government, school etc. are difficult to use this technology, set up the radio communication dedicated network.
3G (Third Generation) Moblie is suggested in the eighties, and it provides mobile multi-media services such as comprising image, data.The most important feature in 3G (Third Generation) Moblie relative two generations provides the Packet data service of high speed.The ATM switching technology is used in third generation base station.
When data service rate is lower than 64K, can be by adaptive or conversion method, packet data streams is filled into certain time slot in the E1 circuit, realize the simple packet function by circuit switching.Second generation mobile communication system realizes the packet switching function just like this.But when packet rates further improves, use circuit switching to realize that packet switching becomes very complicated.Therefore third generation base station is based upon on the ATM switching plane basis usually, by using the different channels coded portion, realizes different radio mouth standard base station.
Wireless mouthful of standard of third generation base station comprises WCDMA, CDMA2000, TD-SCDMA.Branch wireless mouthful of up-downgoing frequency is mixed, and W-CDMA and CDMA2000 adopt and the similar mode of GSM, and different frequency is used in uplink and downlink, is called Frequency Division Duplexing (FDD) mode (FDD).And same frequency is all used in TD-SCDMA uplink and downlink communication, is called time division duplex (TDD).
ATM asynchronous transfer mode (ATM:Asynchronous Transfer Mode) is to carry upper-layer service by cell, realize operation exchange by cell switching, various communication services such as ATM energy voice-bearer, low speed data, ATM Adaptation Layer AAL can provide the adaptive of miscellaneous service.Third generation base station is used adaptive voice of AAL2 and low-speed data service usually, uses adaptive signaling of AAL5 and high-speed data service.
Time slot interchange method switched voice and signaling are used in second generation base station.After voice are fitted to ATM cell, can realize exchange of speech by the cell switching mode.The adaptive quality that could guarantee voice of AAL2 must be passed through in third generation base station, otherwise will have problems.This is because if directly the message that the wall scroll voice are connected directly is bundled to ATM cell, and is then very big at the ATM packing of the corresponding connection time-delay of unpacking.For instance: connect for 64Kbit/s, per second transmits 8000 bytes, and each ATM cell comprises 48 bytes (payload that removes behind the pointer is 47 bytes), and total delay time that packing is unpacked is
47/8000=0.00587 second
0.00587 second * 2*1000=11.75 millisecond
Low speed voice for 16K connect, and delay time will increase by 4 times, reach 40～50 milliseconds.For voice communication, this is intolerable.
If but connection is carried out the ATM packing and unpacked at a high speed, time-delay is just very little.Unpack as packing for the connection of 2.048Mbps, the relative 64Kbps that delays time reduces by 32 times, only less than 0.5 millisecond.Bandwidth is high more, and then the cell packing time-delay of unpacking is more little.The time that cell was packed and unpacked when bandwidth was enough high can be ignored.
Use the AAL2 method, be equivalent to many low speed connect be combined as connect at a high speed after, carry out the packing of ATM cell again and unpack.The packing of the cell time-delay of unpacking is very little like this, so can guarantee the communication quality that the low speed voice connect, guarantees low transmission time delay and delay variation.
The key property of AAL2 is a notion of introducing little cell in cell, and little cell length is fixing, and is next compared with the cell of regular length, has more flexibility.But flexibility also brings complexity, when realizing the exchange of little cell, must split again and assemble cell.About the standard protocol specifies of WCDMA land net speech business carrying, Access Network is encapsulated in the compressed voice business among the AAL2, after equipment of the core network exchange and transmission, finally arrives the destination.
Be illustrated in figure 2 as many voice are connected the method that is fitted to ATM cell by the AAL2 method.Three are respectively 19,18,22 byte long data cells as seen from Figure 2, add that packets headers becomes little cell.Little cell reinstalls the ATM cell payload field, transmits after setting pointer (STF).
But use ATM AAL2 technology to realize professional the transmission,, cause hardware complexity, cost height because corresponding adaptation method needs hardware to participate in.Corresponding adaptation method and cell switching control method complexity, configuration trouble are easily made mistakes simultaneously.
Summary of the invention
The invention provides a kind of base station and test macro/network system thereof, to solve the high shortcoming of design complexity, cost of utilizing the circuit switching platform to cause because of the base station exchange platform in the prior art.
For addressing the above problem, the invention provides following solution:
A kind of base station implementation method, described base station comprise a plurality of carrier frequency modules, and each carrier frequency module is corresponding to a carrier frequency of base station, and each carrier frequency module has independent IP address; Described carrier frequency module comprises: intermediate frequency process module, clock processing module and radio frequency processing module, and finish wireless mouthful intermediate frequency process, clock respectively and handle and the radio frequency processing function; Described carrier frequency module comprises general processor, is used for receiving the IP message from Ethernet interface, is transmitted to speech processing module; Described carrier frequency module comprises speech processing module and channel coding/decoding module, be used to untie the IP message after the packing, form the service message that many voice connection/data connect, and the service message that described voice connection/data connect is adapted to sends after desired form is sent in wireless oral instructions, in the opposite direction, many low speed voice/data messages that wireless oral instructions are come are packaged into the IP message.
Described many low speed voice/data messages are packaged into the IP message, comprise the following steps:
A) original plural road voice or data message are carried out the packing first time, form corresponding plural height bag, each son bag comprises at least: two fields of sub-packet header ID and byte number;
B) above-mentioned plural height bag is bundled in the IP message, this IP message comprises at least: the corresponding respectively son bag of IP heading and plurality of sections, each section.
A kind of base station comprises a plurality of carrier frequency modules, and each carrier frequency module is corresponding to a carrier frequency of base station, and each carrier frequency module has independent IP address; Described carrier frequency module comprises: intermediate frequency process module, clock processing module and radio frequency processing module, finishing wireless mouthful intermediate frequency process, clock respectively handles and the radio frequency processing function, described carrier frequency module also includes general processor, speech processing module and channel coding/decoding module, described general processor receives the IP message from Ethernet interface, is transmitted to speech processing module; Speech processing module and channel coding/decoding module are untied the IP message after the packing, form the service message that many voice connection/data connect, and the service message that these voice connection/data connect is adapted to wireless oral instructions send desired form, in the opposite direction, then be that the service message that many low speed voice/data that wireless oral instructions come connect is packaged into the IP message.
Described clock processing module adopts GPS (Global Position System) and local clock system that standard time clock is provided.
Described base station has Ethernet interface, is connected with the test macro/network system of base station by Ethernet interface;
Described base station has the transmission adaptation unit, is connected with the test macro/network system of base station by the transmission adaptation unit;
Described test macro/network system comprises:
Base station access module: receive user speech business and user data service, each user's data is separated from the packing state, form the standard data structure of internal system at unique user;
The message switching module: process is to the identification of user right and the analysis of subscriber signaling, according to the exchanges data between two users of standard data structure realization;
The authentication module is carried out subscriber signaling, authentication, encryption, charging processing; This module is discerned subscriber signaling and user profile, according to attribute of user, refuses to insert and handles, or user profile is forwarded to other network of interconnection;
Wireless message makes processing module: according to the regulation of standard agreement, handle the distribution of wireless message road resource, the configuration of frequency;
Maintenance module is carried out the maintenance function of network system, and the loading of base station, alarm, system maintenance, realizes being connected the remote maintenance of each base station on the network system;
The gateway processes module with other network equipment interfaces, by business being changed and being shone upon, can realize interconnection and interflow professional and other Network; By constructing specific signaling system, realize interconnection and interflow with other network signal.
Described test macro/network system also comprises:
Be connected to the internet Ethernet or pos interface, be connected to the ip voice network interface, be connected to Access Network and PSTN the V5 interface, be connected to the A interface of gsm system or be connected to the interface of 3G core switching network.
Cascade is directly carried out by Ethernet in described base station.
The present invention realizes network system function by introduce IP and ethernet switch technology in the base station by software processes, by the base station platform that this technology realizes, can support multiple wireless standard.For manufacturer, this technology can be quickened base station development, makes things convenient for simultaneously various tests are carried out in the base station.For the user, aspect low-cost networking and customized network business, has advantage with respect to the traditional base station.
Description of drawings
Fig. 1 is the composition schematic diagram of gsm mobile communication system.
Fig. 2 be in the third generation mobile base station ATM Adaptation Layer AAL2 to the packaging multiplexing schematic diagram of multi-path voice message.
Fig. 3 is bundled to the multi-path voice message for the present invention the schematic diagram of an IP message.
Fig. 4 is a base station platform system module structural representation of the present invention.
Fig. 5 is network system of the present invention/test system module structure chart.
Fig. 6 is the transmission adaption system principle schematic between base station of the present invention and the test macro.
Fig. 7 is test macro of the present invention/network system authentication principle schematic.
Embodiment
Circuit-switched technology and atm technology all exist limitation, and these technology all are the technology that proposes many years ago.In several years development communication technologies practice recently, the IP technology more and more shows superiority.The IP technology has conveniently, flexibly, characteristics that cost is low.Because common IP bearing mode is an Ethernet, so typical IP switching technology is exactly the Ethernet exchange.The exchange capacity and the switching performance excellence of Ethernet exchange all obtain extensive use at enterprise network, metropolitan area network, backbone network.
The present invention uses the core of IP as the base station, uses the Ethernet switching plane to replace circuit switching platform and ATM switching plane, and the cost of equipment, development difficulty will be reduced greatly, and the flexibility of equipment improves.But as the use atm link directly transmits voice message, transmitting the connection of low speed voice-and-data with IP and also have particular problem, is exactly that message postpones too big problem and the too low problem of transmission efficiency (being the too many problem of message amount) specifically.
The message delay issue: as it has been generally acknowledged that the endurable maximum delay of both sides of voice communication is 20ms, require the link transmission of voice communication to postpone to be 10ms like this.This means that per second need transmit 100 more than the voice message in order to guarantee voice quality.If each voice message is mapped in the IP message, just must transmit 100 IP messages by per second.The bandwidth that the low speed voice connect is usually below 16Kbps, and corresponding byte quantity is 2000 below the byte.Like this, 2000 bytes are distributed in 100 IP bags, have only 20 bytes in each IP bag.For the voice message that will so lack forms the IP message, must add and fill and header overhead, and the interframe expense, so IP transmits the efficient of voice very low (transmitting both economical Cai reach the above IP message of 300 bytes usually).
The message amount problem: according to top analysis, every road low speed voice connect needs per second to use 100 IP messages, if there are 100 users to converse simultaneously, just needs per second to transmit 10000 more than the message.The message of so big quantity is very high to the requirement of message transfer capability and message processing capability, causes the difficulty of using software approach to carry out the message processing big, and equipment realizes that difficulty is big.
Therefore, have only the length that as far as possible reduces voice message, some voice messages that transmit could guarantee the voice real-time better in the same time, guarantee high speech quality.But the message that transmits is too short, quantity is too many, does not fit into the transmission feature of IP network, i.e. voice transmission and IP transmit and have contradiction between the two.
In order to solve this contradiction, when using IP to transmit the low speed voice message, improve the transmission performance that IP connects low speed, the present invention connects many low speed to be combined as at a high speed and connects, and carries out the packing of IP message again and unpacks.The time-delay that connects at voice will diminish like this, can guarantee the communication quality that the low speed voice connect.
As shown in Figure 3, the present invention carries out the IP packing with the voice message of multi-path low speed.At first, 3 road original voice messages are carried out the packing first time, form 3 corresponding son bags, each son bag comprises at least: two fields of sub-packet header ID and byte number.As the sub-packet header ID=1 of first son bag, byte number is 19; The sub-packet header ID=2 of second son bag, byte number is 18; The sub-packet header ID=3 of the 3rd son bag, byte number is 22; Then, above-mentioned 3 son bags are bundled in the IP message, this IP message comprises at least: IP heading and plurality of sections, the corresponding respectively son bag of first section, as the IP heading is 20 bytes, section 1 is the full content of son bag 1, and section 2 is the full content of son bag 2, and section 3 is the full content of son bag 3.Through this packaging method, the multi-path low speed voice are packaged as IP message flow at a high speed.
Such as: connect for above-mentioned 100 16K low speed voice,,, need per second to transmit 10000 IP messages that load is 20 bytes if do not use this packaging method according to the analysis result of front; And if adopt this packaging method, 50 user's voice messages are packaged as 1 IP bag, only need the IP message of 200 1000 bytes.
Aspect transmission efficiency: the IP message that transmits 20 bytes load, because IP heading length is 20～40 bytes, and link layer under the IP layer and physical layer also have the above expense of 20 bytes, and short message filling expense, and overhead will account for more than 2/3rds of message total length.And transmitting the IP message of 1000 byte longs, expense can be ignored with respect to whole message.
As using packaging method of the present invention, the voice that transmit 100 16K connect, and only need the bandwidth of 1.6Mbps; If do not use this packaging method, occupied bandwidth will reach more than the 4.8Mbps.
Use packaging method of the present invention simultaneously, to the also reduction greatly of requirement of message transfer capability and CPU disposal ability.
Be connected with low speed data when handling connecting, the original message of multichannel connection is being bundled in the IP message from wireless mouthful multi-path voice.When being defined in the packing processing, all wireless mouthful of logic channels are all shone upon in the IP message.So just can guarantee can not cause voice communication quality to change, the speech quality under the various situations is consistent owing to the variation of number of users.
Connect for wireless mouthful high-speed data, can map directly in the IP message, this compared to existing technology in the advantage that transmits of ATM AAL5 be that transfer approach is simple, transmission efficiency is high (use IP to transmit than using ATM AAL5 to transmit, do not need to carry out corresponding adaptive, efficient improves more than 30% simultaneously).
According to being connected with low speed data when handling above-mentioned multi-path voice is connected, the original message that multichannel is connected is bundled to an implementation method in the IP message, the invention provides a kind of system configuration of wireless base station of the IP of employing technology, its structural representation as shown in Figure 4.Comprise a plurality of carrier frequency modules, each carrier frequency module is independent mutually, differentiates by using different IP addresses.About maintenance, signaling, voice, the user data of this carrier frequency, all mail to this IP address with the packing of IP form.Comprise general processor, speech processes DSP (digital signal processor), channel coding/decoding DSP, intermediate frequency process module, clock processing module, radio frequency processing module etc. in each carrier frequency module in the base station.
General processor is finished the maintenance and the signaling process of base station, finishes the forwarding of user's message simultaneously.It receives message from Ethernet interface, if be judged as voice message or user data connection message, then corresponding message is transmitted to speech processes DSP with dma mode.General processor and speech processes DSP adopt mailbox interface, and the data of transmitting with dma mode are put into the mailbox memory block.Mailbox is realized on dsp chip usually.
Speech processes DSP and channel coding/decoding DSP untie the IP message after the packing, form many voice and connect messages, and these messages are adapted for wireless oral instructions send desired form.In the opposite direction, then be that the message that many low speed voice that wireless oral instructions come connect is packaged as the IP message.
Intermediate frequency process module, radio frequency processing module, clock processing module are finished wireless mouthful relevant treatment function.The clock processing module adopts GPS (Global Position System) GPS and local timing system BITS that standard time clock is provided, and guarantees stable and radio spectrum pure of clock.
Test macro corresponding to the above-mentioned base station of the present invention can be a simple network system, can realize the correlation function of network system.Simple test macro/network system part is the all-purpose computer that has Ethernet interface, and the specific software of operation is finished processing above.Complicated and jumbo test macro/network system is a special equipment, and there are a plurality of modules inside, adopts distributed treatment, with IP network each module that interconnects.As shown in Figure 5, be a kind of network system of the present invention/test system module structure chart, it comprises:
Base station access module: receive user speech business and user data service, each user's data is separated from the packing state, form the standard data structure of internal system at unique user;
The message switching module: process is to the identification of user right and the analysis of subscriber signaling, according to the exchanges data between two users of standard data structure realization;
The authentication module is carried out subscriber signaling, authentication, encryption, charging processing.This module is discerned subscriber signaling and user profile, according to attribute of user, refuses to insert and handles, or user profile is forwarded to other network of interconnection;
Wireless message makes processing module: according to the regulation of standard agreement, handle the distribution of wireless message road resource, the configuration of frequency;
Maintenance module is carried out the maintenance function of network system, and the loading of base station, alarm, system maintenance, realizes being connected the remote maintenance of each base station on the network system;
The gateway processes module with other network equipment interfaces, by business being changed and being shone upon, can realize interconnection and interflow professional and other Network; By constructing specific signaling system, realize interconnection and interflow with other network signal.
If network system/test macro and base station distance are very near, or, can directly use Ethernet interface to be connected to the base station for test purpose.If this equipment and base station at a distance of distant, then need to increase adapting appts, Ethernet interface is adapted for coffret after, connect the base station and the network equipment by transmission equipment.The transmission adapting appts is finished the forwarding of IP message between distinct interface.
Test macro/network system is handled the IP message from the base station by the operation specific software, realizes the exchange of maintenance, signaling process, user speech message to the base station and relaying etc.This equipment with can self-organizing system after the base station is connected, realize the low capacity dedicated network, also can be by being connected to existing network after the particular procedure.
After authentification of user, authentication, need be relayed to other networks if identify customer service, be transferred to IP network and legacy network after then the relative users message being handled, and produce corresponding signaling.In order to realize this purpose, except the interface that is connected to the base station is arranged, the interface that is connected to other network can also be arranged on the equipment.These interfaces comprise: be connected to the internet Ethernet or pos interface, be connected to the ip voice network interface, be connected to Access Network and PSTN the V5 interface, be connected to the A interface of gsm system and be connected to interface of 3G core switching network etc.
By moving different software, network system can through after the particular procedure, be connected to heterogeneous networks with the IP message from the base station, realizes and the interconnection and interflow of different type network, maximally utilises conventional network resources.This is actual to be a kind of gateway function.
From the viewpoint of GSM network, test macro/network system realizes the function of BSC/MSC part; For the WCDMA network, this system has realized the function of RNC/UMSC system.Because this system uses software to realize corresponding function more, and has omitted the interconnect interface between the relevant device, has replaced original circuit switching or ATM switching plane with the Ethernet platform simultaneously, can realize high-performance, low cost.
Test macro/the network system of low capacity, hardware can be common computer, move specific software above, comprise related process module in the software.And jumbo network system, hardware is comparatively complicated, has the network of relation member.Hicap uses distributed computing technology, by Ethernet, Fast Ethernet (Fast Ethernet: speed is 100Mbps), gigabit Ethernet (Gigabit Ethernet: speed is 1000Mbps), or similar connection means connect each processing member.
When growing Distance Transmission, use fiber optic transmission system to connect the different network equipments usually.The interface that optical transmission provides to equipment is generally 1 the road or several roads E1 communication line.Among the present invention, the base station uses IP to be connected with network system.During both close proximity, can directly use Ethernet interface to be connected to each other, between a plurality of base stations, also can directly do cascade with Ethernet.And when wide apart, must Ethernet interface IP message be converted to IP message on the transmission line by the transmission adaptation unit, transmit by transmission system.Transmission adaption system connection diagram between base station and the test macro/network system as shown in Figure 6.
The transmission adaptation unit can be regarded as a part in the base station.If use E1 as transmission, then transmit the router that adaptation unit is similar to a band E1 interface and Ethernet interface, because router can be finished this interface conversion, can between distinct interface, transmit the IP message.But the actual transmissions adaptation unit only needs the message forwarding capability of router just passable, and does not need the upper strata characteristics such as dynamic routing protocol of router and the functions such as redundancy backup of router.As long as so an IP message adapting appts is arranged, this equipment can be accomplished energy static configuration route, and get final product according to configuration routing forwarding IP message.
To adaption system, mainly be that the forwarding speed between requirement Ethernet interface and the coffret is enough fast, the reliable transmission of IP message can be provided.
The compatibling problem of test macro/network system of the present invention and standard network mainly comprises following three problems:
1, except providing the standard air interfaces, whether can provide the network side standard interface of mobile communications network;
2, can accomplish between a plurality of base stations synchronously;
3, can correctly do authentication to the user.
For first problem, the gsm protocol regulation base station controller equipment of standard provides A interface to moving exchanging center MSC, and does not do regulation for the A-bis interface between base station and the base station controller.This interface is the self-defining interface of manufacturer.Among the present invention,, and can outwards provide the standard A interface, just can accomplish to be compatible with fully traditional gsm system if can correctly realize air interface, can't cause with the GSM network in the problems such as switching of existing device.Same, if the standard interface of other wireless system is provided, also can accomplish to be compatible with entirely other Radio Network System.For providing of GSM standard A interface, the gateway function that needs network system to provide.If there is not corresponding gateway function, equipment also can operate as normal, because the relevant function of network has been realized in network system inside.Simultaneously also the novel radio network can be directly connected to fixed telephone network and I P network, realize the small-scale wireless communication system of localized area.
For the clock synchronization issue between the base station, mention in the scheme of base station system, clock system adopts GPS and local BITS, therefore can accomplish between the base station synchronously, user's switching problem can not take place.
For user's authentication, because network system inside comprises authentication module, so can solve.For test macro and simple network system, Verification System is a software module in the software systems.And for the network system of complexity, Verification System is Database Systems.By being connected to the standard interface of other network, can obtain authentication from network of relation according to user profile.By standard interface, database also can provide present networks user's authentication to other network.As shown in Figure 7.
Test macro/network system of the present invention can directly be used Ethernet to be connected to base station equipment and test.It is simple that test becomes, and do not need complicated network environment and expensive instrumentation, as long as design one cover operation software on computers just can be tested every function.
Because this system uses the Ethernet switching plane, the efficient height of exchanges data is suitable for multiple application such as voice communications versus data communications.Can also be on the basis of this equipment the flexible customization business, design various application platforms, as the wireless data exchange platform of special use.
Owing to use the Ethernet switching plane, so have only very low hardware cost.The base station equipment and the network equipment make full use of software replace hardware and handle, and have brought into play the high handling property of processor.
Equipment does not need huge network system, and can accomplish to be compatible with legacy network, so setting up the low capacity wireless access or having superiority aspect the mobile communications network on a small scale.Simultaneously also can accomplish smooth expansion ascending excessive period, build up network and can continue to play a role at network.
In its station of the present invention and the test macro/network system thereof, base station and network equipment implementation method are simple, and development cost is low.The base station that develops and the network equipment are a kind of mini-plants, and user installation is used simple.Equipment can be realized low-cost networking, and the cost of particularly setting up small-scale private wireless networks network is very low.So general unit such as public security, electric power, government, school can set up the private radio communication network by this technology, realize application such as digital office, digitlization teaching by wireless connections, enjoy informationalized facility.
Claims (8)
1. base station implementation method, it is characterized in that: described base station comprises a plurality of carrier frequency modules, and each carrier frequency module is corresponding to a carrier frequency of base station, and each carrier frequency module has independent IP address; Described carrier frequency module comprises: intermediate frequency process module, clock processing module and radio frequency processing module, and finish wireless mouthful intermediate frequency process, clock respectively and handle and the radio frequency processing function; Described carrier frequency module comprises general processor, is used for receiving the IP message from Ethernet interface, is transmitted to speech processing module; Described carrier frequency module comprises speech processing module and channel coding/decoding module, be used to untie the IP message after the packing, form the service message that many voice connection/data connect, and the service message that described voice connection/data connect is adapted to sends after desired form is sent in wireless oral instructions, in the opposite direction, many low speed voice/data messages that wireless oral instructions are come are packaged into the IP message.
2. base station as claimed in claim 1 implementation method is characterized in that: described many low speed voice/data messages are packaged into the IP message, comprise the following steps:
A) original plural road voice or data message are carried out the packing first time, form corresponding plural height bag, each son bag comprises at least: two fields of sub-packet header ID and byte number;
B) above-mentioned plural height bag is bundled in the IP message, this IP message comprises at least: the corresponding respectively son bag of IP heading and plurality of sections, each section.
3. a base station comprises a plurality of carrier frequency modules, and each carrier frequency module is corresponding to a carrier frequency of base station, and each carrier frequency module has independent IP address; Described carrier frequency module comprises: intermediate frequency process module, clock processing module and radio frequency processing module, finishing wireless mouthful intermediate frequency process, clock respectively handles and the radio frequency processing function, it is characterized in that: described carrier frequency module also includes general processor, speech processing module and channel coding/decoding module, described general processor receives the IP message from Ethernet interface, is transmitted to speech processing module; Speech processing module and channel coding/decoding module are untied the IP message after the packing, form the service message that many voice connection/data connect, and the service message that these voice connection/data connect is adapted to wireless oral instructions send desired form, in the opposite direction, then be that the service message that many low speed voice/data that wireless oral instructions come connect is packaged into the IP message.
4. base station as claimed in claim 3 is characterized in that: described clock processing module adopts GPS (Global Position System) and local clock system that standard time clock is provided.
5. base station as claimed in claim 3 is characterized in that: described base station has Ethernet interface, is connected with the test macro/network system of base station by Ethernet interface;
Described test macro/network system comprises:
Base station access module: receive user speech business and user data service, each user's data is separated from the packing state, form the standard data structure of internal system at unique user;
The message switching module: process is to the identification of user right and the analysis of subscriber signaling, according to the exchanges data between two users of standard data structure realization;
The authentication module is carried out subscriber signaling, authentication, encryption, charging processing; This module is discerned subscriber signaling and user profile, according to attribute of user, refuses to insert and handles, or user profile is forwarded to other network of interconnection;
Wireless message makes processing module: according to the regulation of standard agreement, handle the distribution of wireless message road resource, the configuration of frequency;
Maintenance module is carried out the maintenance function of network system, and the loading of base station, alarm, system maintenance, realizes being connected the remote maintenance of each base station on the network system;
The gateway processes module with other network equipment interfaces, by business being changed and being shone upon, can realize interconnection and interflow professional and other Network; By constructing specific signaling system, realize interconnection and interflow with other network signal.
6. base station as claimed in claim 3 is characterized in that: described base station has the transmission adaptation unit, is connected with the test macro/network system of base station by the transmission adaptation unit;
Described test macro/network system comprises:
Base station access module: receive user speech business and user data service, each user's data is separated from the packing state, form the standard data structure of internal system at unique user;
The message switching module: process is to the identification of user right and the analysis of subscriber signaling, according to the exchanges data between two users of standard data structure realization;
The authentication module is carried out subscriber signaling, authentication, encryption, charging processing; This module is discerned subscriber signaling and user profile, according to attribute of user, refuses to insert and handles, or user profile is forwarded to other network of interconnection;
Wireless message makes processing module: according to the regulation of standard agreement, handle the distribution of wireless message road resource, the configuration of frequency;
Maintenance module is carried out the maintenance function of network system, and the loading of base station, alarm, system maintenance, realizes being connected the remote maintenance of each base station on the network system;
The gateway processes module with other network equipment interfaces, by business being changed and being shone upon, can realize interconnection and interflow professional and other Network; By constructing specific signaling system, realize interconnection and interflow with other network signal.
7. as claim 5 or 6 described base stations, it is characterized in that: described test macro/network system also comprises:
Be connected to the internet Ethernet or pos interface, be connected to the ip voice network interface, be connected to Access Network and PSTN the V5 interface, be connected to the A interface of gsm system or be connected to the interface of 3G core switching network.
8. base station as claimed in claim 3 is characterized in that: cascade is directly carried out by Ethernet in described base station.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101498739A CN101159954B (en) | 2003-05-20 | 2003-05-20 | Base station testing system/network system |
| CNB031367623A CN100403821C (en) | 2003-05-20 | 2003-05-20 | Base station and its realizing method, and base station detecting system/network system |
| CN2007101498705A CN101159895B (en) | 2003-05-20 | 2003-05-20 | Base station implementing method |
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| CNB031367623A CN100403821C (en) | 2003-05-20 | 2003-05-20 | Base station and its realizing method, and base station detecting system/network system |
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| CN2007101498739A Division CN101159954B (en) | 2003-05-20 | 2003-05-20 | Base station testing system/network system |
| CN2007101498705A Division CN101159895B (en) | 2003-05-20 | 2003-05-20 | Base station implementing method |
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| CN1549627A CN1549627A (en) | 2004-11-24 |
| CN100403821C true CN100403821C (en) | 2008-07-16 |
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| CNB031367623A Expired - Fee Related CN100403821C (en) | 2003-05-20 | 2003-05-20 | Base station and its realizing method, and base station detecting system/network system |
| CN2007101498739A Expired - Fee Related CN101159954B (en) | 2003-05-20 | 2003-05-20 | Base station testing system/network system |
| CN2007101498705A Expired - Fee Related CN101159895B (en) | 2003-05-20 | 2003-05-20 | Base station implementing method |
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| CN2007101498739A Expired - Fee Related CN101159954B (en) | 2003-05-20 | 2003-05-20 | Base station testing system/network system |
| CN2007101498705A Expired - Fee Related CN101159895B (en) | 2003-05-20 | 2003-05-20 | Base station implementing method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101159895B (en) * | 2003-05-20 | 2010-09-29 | 华为技术有限公司 | Base station implementing method |
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| CN100571206C (en) | 2006-06-19 | 2009-12-16 | 上海贝尔阿尔卡特股份有限公司 | Base station system and call setup thereof, switching and release processing method in the mixed networking |
| CN100411471C (en) * | 2006-08-07 | 2008-08-13 | 上海华为技术有限公司 | System and method for testing capacity of A interface after IP converting |
| CN101202974B (en) * | 2006-12-15 | 2011-09-28 | 华为技术有限公司 | System, base station and method for multi-standard base station intercommunication |
| WO2008086748A1 (en) * | 2007-01-12 | 2008-07-24 | Huawei Technologies Co., Ltd. | A-interface-based mobile communication method,system and equipment |
| CN102769609B (en) * | 2007-09-17 | 2016-05-25 | 华为技术有限公司 | A kind of method, system and device of transfer of data |
| CN105392216A (en) * | 2008-03-19 | 2016-03-09 | 华为技术有限公司 | Wireless communication system, wireless communication module and wireless communication device |
| CN102695184B (en) * | 2012-05-22 | 2015-04-01 | 大唐移动通信设备有限公司 | Base station testing system and method |
| CN102752752B (en) * | 2012-06-12 | 2015-10-28 | 大唐移动通信设备有限公司 | base station maintenance method and apparatus |
| CN109586781A (en) * | 2018-12-05 | 2019-04-05 | 安徽站乾科技有限公司 | A kind of satellite communication system of band distal end monitoring |
| CN112085031A (en) * | 2020-09-11 | 2020-12-15 | 河北工程大学 | Target detection method and system |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN101159895A (en) | 2008-04-09 |
| CN101159954A (en) | 2008-04-09 |
| CN1549627A (en) | 2004-11-24 |
| CN101159895B (en) | 2010-09-29 |
| CN101159954B (en) | 2010-06-02 |
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