CN1050964A - The junction network that does not have central controlled automatic roaming - Google Patents
The junction network that does not have central controlled automatic roaming Download PDFInfo
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- CN1050964A CN1050964A CN 90107969 CN90107969A CN1050964A CN 1050964 A CN1050964 A CN 1050964A CN 90107969 CN90107969 CN 90107969 CN 90107969 A CN90107969 A CN 90107969A CN 1050964 A CN1050964 A CN 1050964A
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
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Abstract
A relay communications system (A, B and C) network (100) communication unit (112) that is supported in roaming in the geographic area of the above-mentioned network coverage communicate, this realizes by means of having the direct mutual communication of the control computer (106) relevant with each relay system, and transmit the information of relevant this roaming unit between them.The identification code of this roaming unit (112) and privilege transmit in this network by computer (106), give the ability of this roaming communication unit direct swap data in this network, perhaps by the phone mutual connection in each relay system, by means of process PSTN (108A, 108B, speech information 108C) communicates.
Description
The present invention relates generally to the communication system of relaying.The present invention relates to the communication system (comprising cellular telephone system and distribution system) of relaying specifically, and make communication unit can roam into the trunking traffic network of another relay system and the nationwide roaming of guiding support from a relay system.
The communication system of relaying is known.In No. 4833701 patents of the U.S. that authorizes people such as Comroe, relay communications system with nationwide roaming capacity has been described, but it requires a central computer of communicating by letter with each relay system in this network, so that a communication unit of base system that allows to leave it is by new, outside relay communications system communicates.(a common communication unit has a base relay system.Whether as terminology used here, the relay communications system of an outside is considered to a relay system of its base system.）
As described in the patent of Comroe, relay communications system generally comprises a resouce controller, in a plurality of communication units, be assigned the limited number communication resource (as frequency to or the TDM time slot).A communication unit can be regarded a mobile unit (being contained on the automobile typically) as, a portable unit (being typically band on the person), or a control station, it is a trunking traffic unit, is installed in the building regularly or semifixedly or other fixing place.
Each communication unit in relay communications system all has an identification code, and when this communication unit wished to insert a communication resource, this identification code was sent at a resouce controller on the control resource of this resouce controller with other information.In case identify in this control resource and when giving the identification code of this request unit on the controller of the communication resource, this resouce controller authorizes other relevant communication unit of this requesting communication unit and goes to monitor and communicate through a particular communication resource, and allows this requesting communication unit and receiving communication unit to communicate in this available resource.(other user that the communication unit relevant with request unit is relevant with the request unit function typically is as other police's automobile, other transport vehicle etc.).
In the relay communications system network, as what describe in the Comroe patent, a communication unit from a relay communications system to another relay communications system roaming must be able to find the control resource of this system, deposit or it oneself identification gone into the resouce controller of this new relay communications system, have the communication privileges that resouce controller is authorized the visit communication unit afterwards, communicate by new relay system to allow this communication unit.In the patent of Comroe, this new relay system is verified the validity of this accessing communication unit by a central computer, should central authorities calculate before the communication unit of giving roaming is authorized communication privileges, machine is connected with the control computer of all relay systems that constitute the relay system network.
Described as Comroe, the problem of relay communications system is: this central computer is the data link that between the computer of several relay systems there is power.This central computer must be continuously communicated by letter with the local computer of relevant relay system, so that upgrade the position that its database keeps following the tracks of the roamer.
In the nationwide network of relay system, master in the Comroe patent or central computer become a bottleneck problem, and the total data of this nationwide relay communications system is professional must to flow by it.Just in case this central computer damages, this relay communications system network will be paralysed fully.The network of a relay system is avoided the data bottleneck problem of single central computer and has been reduced because the susceptibility of the whole system fault that this central computer fault causes is an improvement to prior art.
Disclosed herein is a relay communications system network by network control computer mutual communication.In most preferred embodiment, each computer in the several Control computer is all relevant with a relay system.Except other relay system function for monitoring, the control computer of relay system is followed the user in its relay system and the user of the outside or visit in other relay system.
Be in the geographical coverage area of external relay system and wish at first will find out the control resource (control channel in some systems) of this external relay system, and confirm the user of this new resouce controller support roaming by the accessing communication unit that external system communicates.(support the departure signaling word of a uniqueness of relay system broadcasting of roaming, an identification code signal, a discernible bit code type in existing departure signaling word (OSW), or other signal, the communication unit of a roaming can determine from this signal whether new relay system supports roaming.）
When the communication unit of a roaming found a controller of supporting roaming, this communication unit can attempt charging to or deposit the local computer into this new relay system.This roaming communication unit sends a service request generally for the local controller of new relay system.In most preferred embodiment, when this communication unit during from new controller requested service, the communication unit of this request with its own and its base system discern to new controller.The data network of whole control computers of the controller process connection relay system network of new relay system is the identification code of this communication unit, and other recognition data of service request and this ramber sends to the controller of base relay system.
In case when receiving from data that the controller of new system comes, the controller of this base relay system is attempted this roaming communication unit of identification, its base system is given with privilege and is confirmed its validity (prevent to have no right user).In case after the identity by this ramber of local system controller verification, this local system controller can followingly install to the controller of new system, authorizes the new controller of packing under the privilege of soaking the ramber in visitor's base system.New then system controller is authorized this ramber identical privilege, perhaps authorizes bigger or littler right arbitrarily by the far end system operator.(for example, this roaming communication unit may have the privilege of interconnect call in its base system, and this new system may not have the interconnect call ability.In this case, the interconnect call power of authorizing in new system is exactly impossible.）
In case this roaming communication unit is deposited into new relay system, can communicate by letter with this communication unit through the data network that the computer of all relay systems is linked together from data or other information (comprising message breath if possible) that this base relay system comes.The controller of roamer's base system will be known the position of this ramber in this network, and know user profile, and message or the data that are assigned to this communication unit send the place.An example of exchanges data is the text data message from this roamer's distributor (being arranged in this base system) to the roaming communication unit of new system.Similarly, externally the new communication unit in the system can send back to this controller to data, is used for the follow-up transmission in other place, perhaps arrives its distributor.
If this new system supports an interface of this this locality public switch telephone network, the Speech Communication with this communication unit is admissible so, can carry out through the telephone network (PSTN) of public exchange with contacting directly of both sides.If the data network that computer is linked together has enough capacity (for example bandwidth), the Speech Communication between a roaming communication unit and its base system can carry out on this data network.Another kind of speech route is for example a microwave link that comprises between this external system and this base system.
In some cases, relay communications system can not received the relay communications system network.In these cases, if this communication unit has the ability to local controller request communication privileges, communication privileges still can be authorized a roaming communication unit in the external relay communication system of isolating so.Not between the local computer of this network, to have data forwarding, but between this roaming communication unit and this local controller, have a similar data to transmit.After this controller is received the request of this communication unit, the suitable privilege of roaming communication unit privileged set that this controller is authorized and allowed.
Fig. 1 supports automatic roaming and the block diagram of the network trunk communication system of central controller not.
Fig. 1 represents to be used to constitute three relay communications system (A, B and C) of this grid, and this network allows a communication unit (112) not lose communication capacity from a system roaming to another system.Each relay system (A, B and C) of forming this network comprises a central controller (102A-C), a local computer (106A-C), repeater (104A-C) and PSTN interface unit (108A-C).This controller (102A-C) is worked under the control of local computer (106A-C) and is distributed the working resource of the repeater (104A-C) in the relay system (A, B and C).
Local computer (106A-C) in each relay system of three relay systems is carried out several management functions, be included as this relay system (A, B and C) user in the coverage area distributes and assigned I D sign indicating number, the ID sign indicating number that sends from communication unit is deciphered and to roaming communication unit (112) reprogramming, should be roamed the unit like this and can work in the particular system of local computer (106) control.Local computer (106A-C) also is direct-connected, and by the network of this computer of data network (10,12 and 14) formation, data network will explain below.
In the embodiment shown in fig. 1, local computer (106A-C) is received PSTN by local PSTN interface (108A-C), make the user who communicates by letter with any central computer (102) can pass through repeater (104A-C), local computer (106A-C) also carries out interconnect call by local PSTN interface (108A-C) and calls out (suppose that the interconnect call privilege awards towering this communication unit, the technical descriptioon of interconnect call characteristic is known and be not described further in the relay communications system).
If base system (for example A) and external system (for example B) are supported the interconnect call of trunk subscriber (112), then this relay communications system network (100) is transmitted support call.The communication unit that has the interconnect call privilege in the A of system can arrive in this network (100) Anywhere through phone, when communication unit appears among the A of system, wish that the side with communication unit (112) contact dials the telephone number of this communication unit.If this communication unit (112) exceeds the geographical coverage area of its base system (A), the interconnection of phone is normally impossible.If this external system (B) supporting telephone interconnection, (among the system B time, external system can be given communication unit (112) designated telephone interconnection privilege and can be forwarded to the new phone number of the PSTN interface among the B of system the local computer of base system (system A) when this communication unit resides in external system.The local computer of system A can be forwarded to new system PSTN interface to the incoming call of communication unit (112) then, perhaps dials the new digit of the new PSTN interface of caller, makes that this call forward is transparent to this caller.
But fundamental characteristics of the present invention has improved communication by the network local computer between different relay systems; Draw other improvement from this improvement.
In Fig. 1, support the relay system network (100) of automatic roaming to be enhanced, this is to realize by the local computer (106B-C) of the relay system (B and C) of the local computer of a relay system (for example A) being received other.In network shown in Figure 1 (100), each local computer (106) is all received each other the local computer that comprises this network (100), has improved the data processing between the computer and has increased the reliability of this network.
In illustrated embodiments, local computer (106A-C) is received together through the commercial data service line, and the commercial data service line provides the physical link between the computer and defines the rules that computer uses.Preferably special-purpose between computer in some cases, hardwire connects) local computer (106A) of system A is general with renting the local computer that data wire (10 or 14) is received B of system or C.These data wires can comprise Packet Switch Data Network (PSDN).As shown in Figure 1, the local computer of system C is communicated by letter with the local computer of A of system and B by similar data network (10 and 12), communicates by letter the same with 12 with the local computer of A of system and C through data network 14 as the local computer of the B of system.
The real network that these computers are linked together can be the combination of any suitable network, comprises the data link based on microwave, and satellite is the data link for the basis, the circuit-line of renting; Or rent the data wire road network.Physical link between the local computer (106A-C) also can be arranged to other orientation.(be not almost to be in parallel as the drawn local computer of Fig. 1, the link between several local computers also can be a connected in electrical series.Local computer can receive the data that another computer comes, and deciphers these data and it is sent to next local computer in the wire string of local computer.But such arrangement also has the shortcoming identical with the Comroe patent, or near network centers of the data of in fact handling all relevant roamings a computer is arranged.) data transmitted on physical link can be with any suitable rules.For example, the X.25 rules be familiar with of this area can be used in this network.
Every local computer (106) in the relay system network (100) is included in the local data base (107A-C) it significant data of oneself duplicating separately.As what narrated in the Comroe patent, every local computer (106A-C) specifies a roaming ID generally for a communication unit (112), its system of this communication unit visit in another system.This information generally is retained in local local data base (107).In the most preferred embodiment here, when they were awarded privilege, local computer specified unique identification code (ID) can for this roamer, and can remove the ID of appointment when this user leaves or do not work.The state of these IID remains on local data base (107A-C) usually.These ID also can be used for discerning the privilege of investing the ramber.
When a communication unit (112) leaves the new relay system that it is visited, or from a system to another system roaming, local computer generally comprises the device that is used for inquiring after periodically state of user, is work so that set up whether these users be considered in this relay system.
In most preferred embodiment, local computer is programmed, so that get in touch with calling party periodically according to the content of the roaming ID of appointment table, and seeks the response of calling party with the data resource of local computer broadcasting.If after certain predetermined time limit and retry number, central computer does not detect response from the communication unit of visit, local computer may be thought this accessing communication unit or leave this relay system or no longer be operated in this case so, local computer may be labeled as the communication unit of visit empty, the ID sign indicating number of this accessing communication unit is returned to available ID code table, and mark in the relay system coverage area that this accessing communication unit no longer resides in it.When this roaming communication unit was not temporarily worked, local computer may be with multiple overtime (multiple timeouts), this ramber of mark for not the time before, may require multiple overtime expiration.
As mentioned above, each roaming communication unit comprises the ability of scan control resource (control channel in some systems) and discerns this control resource from local computer, local computer support roaming trunking traffic rules.The coverage area that leaves a relay system (data error that for example detects the control resource increases), the general scanning of roamer is as one group of radio frequency of the control resource frequency of relay communications system.In the time may scanning corresponding to the hundreds of of the different control resource of hundreds of different frequency, this communication unit may must go to discern the control resource of the best of locking with different algorithms.(this communication unit must have and the radio transmitting and the receiving ability that comprise the various relay system compatibilities of this network (100) certainly.）
Found one control resource after, by this control resource data decoding, communication unit must detect local computer and whether support roaming communication.In case the control resource that the local computer of detection and Identification support roaming comes, this communication unit wireless device (112) must be charged to oneself it and discern the local computer (106B) to roaming relay system (B).This wireless device sends its group number, if any words, with ID number, if any words, (and any password that is used by network (100)) gives the local computer of external relay system (B), and from a roaming of this relay system local computer (106B) request ID, the local computer of this wireless device and relaying will be discerned this communication unit with it then.In case when receiving the data (part of these data is discerned ramber's base system to new local computer) of this communication unit (112), the local computer (106B) of new system through a suitable data path as mentioned above (directly maybe may be) by 12 and then by 14 by 14 forward to the local computer (106A) of roamer's base system (A) and contact.According to the data in its database (107A), the data that this base computer can send with the local computer of outside are discerned this ramber, and this outside local computer of packing under the operating privilege of authorizing the ramber in its base system.
In the system of Fig. 1, the communication of communication unit (112) mainly is data communication in an external relay system (this this relay system).In an external relay system, wish with base relay system (A) that this communication unit (112) is communicated by letter in a distributor terminal (113) can pass through data network (10 between the local computer to a data message, 12,14) be sent to this communication unit (112), the message of this data-message or a packet-type or the text of arbitrary format.
In an illustrated embodiment, distributor terminal (113) is received local computer (106A) by a data link (114) that is similar to other data link (10,12,14).Because this communication unit (112) has exceeded the communication range of its base station local computer, so the direct Speech Communication between the distributor of this communication unit (112) and distributor terminal is impossible through the base junction network.Another kind of situation, Speech Communication can carry out through existing telephone communication network between the distributor (113) in base relay system (A).If (these networks have ability that transmits simulated voice information or the ability that transmits digital voice, another embodiment can comprise through data network (10,12 and 14) Speech Communication) wish can to use an interface proposition of the public switch telephone network in the external relay system (system B as shown in Figure 1) or to receive the calling of this communication unit through the distributor (113) that a speech resources is communicated by letter with a communication unit: this communication unit can propose or receive call by this external relay system (system B) and to the interface of public switch telephone network system (108B), thereby the distributor in permission and the base relay system (system A) carries out Speech Communication.
An alternative embodiment of the invention can comprise the relay communications system (be that these systems do not receive local control computer network, but have a local control computer at least) of a plurality of separation, and the communication unit (112) of authorizing roaming is with communication privileges.This roaming communication unit (112) is sought the control resource of a piece-rate system supporting roaming communication unit, ask the local computer of this piece-rate system can authorize communication privileges after authorizing its communication privileges at roaming communication unit (112), this communication privileges is equivalent to allow the privilege of this unit in its base system.(the privilege that another kind of situation, the local computer of this piece-rate system privilege of authorizing this roaming communication unit is authorized this unit greater than the base system of system by it.) controller of this piece-rate system notifies this communication unit all parameters that its needs, may one except the parameter, i.e. the sequence number of this unit.If this roaming communication unit can not successfully be carried out this initialization in this system, if perhaps this unit receives a refusal it attempts to charge to, this communication unit begins to seek the control resource of another system so, attempts initialization on this basis.
Suppose that the data network (10,12 and 14) that connects computer does not exist, support roaming so but the relay system of not receiving the appreciable network of Fig. 1 can not be worked, perhaps between local computer, do not transmit data.In the system of this type, this roaming unit must be adorned operating privilege down to this local computer, and according to the data that send to local computer from this communication unit, this local computer is authorized this unit (112) communication privileges.
Claims (19)
1, a kind of network of relay communications system, it is configured and arranges to support that a communication unit roams into the relay communications system that another keeps the basic communication ability from a relay communications system, it is characterized in that:
A plurality of relay communications system;
Multi-section control computer, at least one control computer is relevant with each relay system of above-mentioned a plurality of relay communications system, the control computer relevant with relay system communicated by letter with the communication unit in its relevant relay system, and receives another the relevant control computer of another relay communications system that constitutes the computer distributed network;
A plurality of communication units can be at whole these communication units of above-mentioned Network Recognition with the communication unit identification code, at least one relay communications system in above-mentioned network, and at least some communication units have:
Be used for communicating by letter and to the device of the control computer request communication privileges relevant with relay system with above-mentioned multi-section controller.
2, according to the network of claim 1, wherein said a plurality of subscriber units comprise a kind of device, are used for determining that it is impossible that a control computer relevant with the trunking traffic network communicates, and scan the communication resource afterwards and go and other control compunication.
3, according to the network of claim 1, comprise a device, be used for communication unit of its base relay system of above-mentioned network and public switch telephone network interface.
4, according to the network of claim 1, comprise a device, be used for communication unit of the outside relay system of above-mentioned network and public switch telephone network interface.
5, according to the network of claim 1, wherein above-mentioned a plurality of communication units comprise recognition device, are used for discerning they oneself according to relay communications system and relay wireless wireless device franchise of authorizing above-mentioned control computer singlely.
6, according to the network of claim 1, wherein above-mentioned a plurality of communication units comprise the recognition device of the relay radio equipment privilege that is used to discern above-mentioned control computer.
7, according to the network of claim 1, wherein comprise the radio device that is used to monitor the control channel relevant with the relay wireless electrical communication system with the said apparatus of above-mentioned a plurality of control compunications, the relay wireless electrical communication system comprises the control data on above-mentioned network and the above-mentioned control channel of decoding.
8, according to the network of claim 5, determine that wherein the control compunication relevant with the trunking traffic network is impossible, said apparatus comprises a device measuring above-mentioned control channel mistake.
9, according to the network of claim 1, wherein above-mentioned a plurality of control computers through a data network directly and other control compunication.
10, according to the network of claim 9, wherein above-mentioned data network is a Packet Switch Data Network.
11, according to the network of claim 1, wherein each system of above-mentioned a plurality of relay communications system comprises the repeater of a plurality of relayings.
12, a kind of wireless device that is used for the network of a relay communications system, above-mentioned network is configured and arranges to support that wireless device roams into the relay communications system that another keeps the basic communication ability from a relay communications system, each relay communications system of above-mentioned network has a relevant control computer, and one control resource on broadcast control data, above-mentioned wireless device is characterised in that:
Be used for detecting the device of control resource from a resouce controller of the relay communications system of above-mentioned network;
Be used for discerning the above-mentioned resouce controller of supporting roaming relay radio equipment from above-mentioned resouce controller station by data broadcasting;
Device from above-mentioned resouce controller request communication privileges;
Above-mentioned wireless device is discerned device to above-mentioned control computer; And
Receive the device of interim identification code from above-mentioned control computer.
13, in a relay communications system network, this network is configured and arranges to be used for supporting that a unit that belongs to a plurality of unit roams into the relay communications system that another keeps communication capacity from a relay communications system, each roaming communication unit has a base system, each relay communications system of above-mentioned network has a control computer, the aforementioned calculation machine of each relay communications system is connected to the computer of other relay communications system of above-mentioned network, every computer has a database of authorizing the roaming communication unit privilege information, above-mentioned a plurality of roamings unit has different communication privileges in different relay communications system, in an external relay system, be a kind of method that a communication unit is set up communication privileges, it is characterized in that:
Scan the control channel of above-mentioned relay communications system;
The external relay communication system of roaming communication unit is supported in identification;
Discern to the said external system from said external system request communication privileges with the wireless device of request;
The communication privileges that the above-mentioned communication unit in its base system is authorized in checking;
Data are packed under its base system computer be described in the external system computer of the above-mentioned radio communication privilege the above-mentioned base system.
14,, comprise the step of the data forwarding power of authorizing between above-mentioned base system and said external system according to the method for claim 13.
15, in the network of a relay communications system, this network is constructed for supporting a communication unit to roam into another relay communications system from a relay communications system, each relay communications system in the above-mentioned network has a control resource, the control data of said system exchanges with communication unit on this control resource, and a control computer arranged, send and be received in the data on the above-mentioned control resource, above-mentioned communication unit has the base relay system of an appointment and roams into external system from above-mentioned base system, a kind of communication unit method for communicating in the said external relay system that allows in an external system is characterized in that:
The control computer relevant with the relay system of above-mentioned network is linked to be a distributed computer network;
On a control corresponding resource, receive the service request of coming from the communication unit of visit external relay communication system;
Handle above-mentioned service request by above-mentioned control computer network, so that discern the validity of this communication unit and the communication privileges of this communication unit;
In the time of in above-mentioned roaming communication unit is in the said external relay system, authorize the communication privileges of an effective roaming communication unit in the said external relay system;
After above-mentioned communication unit leaves the said external relay system, cancel the above-mentioned communication privileges of above-mentioned roaming communication unit.
16, a kind of relay communications system is configured and arranges to support that a communication unit roams into the relay communications system that another keeps the basic communication ability from a relay communications system, it is characterized in that:
A relay communications system;
A control computer relevant with above-mentioned relay communications system;
A communication unit is used in the data in the above-mentioned communication unit, discerns to above-mentioned control computer according at least one relay system in above-mentioned network, and above-mentioned communication unit has:
With above-mentioned control compunication and from the device of the similar above-mentioned control computer request communication privileges of relay system.
17, according to the relay communications system of claim 16, wherein above-mentioned subscriber unit comprises and is used for determining that it is impossible that the control computer relevant with the trunking traffic network communicates, and scans the communication resource afterwards so that control the device that computer communicates with other.
18,, comprise that the device that is used for communication unit of relay system externally and public switch telephone network interface puts according to the relay communications system of claim 17.
19, according to the network of claim 17, wherein above-mentioned communication unit comprises recognition device, is used for discerning it oneself singlely, and base relay communications system and its relay radio equipment are to the privilege of above-mentioned control computer.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US41485589A | 1989-09-29 | 1989-09-29 | |
| US414,855 | 1989-09-29 |
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| CN1050964A true CN1050964A (en) | 1991-04-24 |
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|---|---|---|---|
| CN 90107969 Pending CN1050964A (en) | 1989-09-29 | 1990-09-25 | The junction network that does not have central controlled automatic roaming |
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|---|---|
| CN (1) | CN1050964A (en) |
| AU (1) | AU6277790A (en) |
| WO (1) | WO1991005429A1 (en) |
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| WO2007019730A1 (en) * | 2005-08-18 | 2007-02-22 | Zte Corporation | A roaming implemented method for digital trunk communication system |
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- 1990-08-24 WO PCT/US1990/004783 patent/WO1991005429A1/en unknown
- 1990-08-24 AU AU62777/90A patent/AU6277790A/en not_active Abandoned
- 1990-09-25 CN CN 90107969 patent/CN1050964A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007019730A1 (en) * | 2005-08-18 | 2007-02-22 | Zte Corporation | A roaming implemented method for digital trunk communication system |
| CN101223805B (en) * | 2005-08-18 | 2010-12-22 | 中兴通讯股份有限公司 | Roaming implementing method for digital cluster communication system |
Also Published As
| Publication number | Publication date |
|---|---|
| WO1991005429A1 (en) | 1991-04-18 |
| AU6277790A (en) | 1991-04-28 |
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