CN101730198A - Method and relay for controlling communication system - Google Patents
Method and relay for controlling communication system Download PDFInfo
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- CN101730198A CN101730198A CN200810175949A CN200810175949A CN101730198A CN 101730198 A CN101730198 A CN 101730198A CN 200810175949 A CN200810175949 A CN 200810175949A CN 200810175949 A CN200810175949 A CN 200810175949A CN 101730198 A CN101730198 A CN 101730198A
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Abstract
The invention provides method and relay station for controlling communication system, wherein the relay station enters a distributed control mode. Under the distributed control mode, the method comprises at least one of the following steps: the relay station dispatches radio resources of a network, the relay station generates control messages and the relay station sends the control messages by dispatching the radio resources to control a subsidiary station of the relay station, wherein the subsidiary station comprises a terminal and/or a subsidiary relay station. By the invention, the timely communication of users at disaster sites or war sites is and the reasonable allocation of resources.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of control method and relay station of communication system.
Background technology
Usually, wireless communication system uses the wireless communication terminal of electromagnetic wave and fixing/move to communicate, and for example, mobile radiotelephone or with the notebook computer of wireless communication card etc. all can abbreviate terminal as.Usually, terminal all is positioned at the wireless coverage of system, and the wave frequency of distributing to terminal is divided into a plurality of carrier frequencies as radio communication channel.Wireless communication system is by the base station and utilize the specific radio channel to provide wireless coverage in certain geographic range, and this geographic range is called the sub-district.Usually, theoretically, the base station should be positioned at the central authorities of sub-district.
In order to enlarge system ovelay range or expanding system capacity, one or more relay stations can be arranged between the base station and terminal of supporting multi-hop relay, hereinafter, the wireless communication system that will comprise relay station abbreviates system as.Relay station can be used for the signal of relay base station to terminal (descending) or terminal to base station (up).Adopt after the relay station, can improve the communications link signals transmission quality effectively, thereby reach the purpose that enlarges system ovelay range or increase power system capacity.
Terminal is jumped by one or the communication path of multi-hop relay station access base station is called relay route, is called the access relay station with the relay station that terminal directly links to each other, and the communication link that inserts relay station and terminal is called access link.On relay route, inserting relay station can communicate by other relay station and base station, between the relay station and the communication link between relay station and the base station be called repeated link.Relay station can be fixed, roam or move.Shown in Figure 1A and Figure 1B, Figure 1A is the system that comprises a relay station, and Figure 1B is the system that comprises two relay stations.Wherein, in Figure 1A, terminal 1 and terminal 2 are the subordinate station of relay station, and the base station is undertaken alternately by relay station and terminal 1 and terminal 2; In Figure 1B, terminal 1 and terminal 2 are the subordinate station of relay station 1, and terminal 3, relay station 1 are the subordinate station of relay station 2, and carry out alternately with terminal 1 and terminal 2 by relay station 2 and relay station 1 base station, and the base station is undertaken by relay station 2 and terminal 3 alternately.
At present, the mode of operation of relay station all is centralized control, that is, the network at subordinate station enters, network withdraws from and the management of data transfer path etc. all is by base stations control.But in urgent scene such as the disaster relief or war; usually can be by damage and can't operate as normal or just do not have the base station at all in the base station; in this case; if system remains the leading centralized control in base station; just can't carry out telecommunication management effectively, and then may cause communication disruption etc. unusual.
Summary of the invention
At in the prior art under centralized control model, the base station can't communicate the problem of management when damaging and propose the present invention, for this reason, the present invention aims to provide a kind of control method and relay station of communication system, to address the above problem.
According to an aspect of the present invention, a kind of control method of communication system is provided, relay station enters distributed control model, under distributed control model, method comprise following one of at least: the Radio Resource of relay station dispatch network, relay station produce control messages, relay station and are used to transmit control message by the scheduling Radio Resource and control its subordinate station, wherein, the subordinate station comprises terminal and/or subordinate's relay station.
According to another aspect of the invention, provide a kind of relay station, having comprised: scanning element is used to scan the synchronizing information of down channel; Control unit is used for satisfying under the situation of predetermined condition, and the control relay station enters distributed control model, and predetermined condition is: scanning element does not scan synchronizing information at down channel in all frequency ranges or in the scheduled time; Distributed control unit is used to realize the operation of relay station under distributed control model, comprise following one of at least: scheduling unit is used for the Radio Resource of dispatching communication system; The control messages unit is used for producing and transmitting control message standing to the subordinate; Administrative unit is used to control the subordinate station; Wherein, the subordinate station comprises terminal and/or subordinate's relay station.
By means of technique scheme one of at least, the present invention realizes control to communication network under the urgent scene by the relay station with distributed coordination function, the problem of can't being implemented under the urgent scene that has overcome that the mode of operation owing to relay station of the prior art causes by relay station control communication system, so realized the user at disaster scene or war scene timely communication, reasonable resources is disposed.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Figure 1A, Figure 1B are the schematic diagrames according to the communication system that comprises relay station of correlation technique;
Fig. 2 A, Fig. 2 B are the schematic diagrames according to the communication system of having only relay station under the urgent scene of the embodiment of the invention;
Fig. 3 is the block diagram according to the relay station of apparatus of the present invention embodiment;
Fig. 4 is the structured flowchart according to the distributed control unit in the relay station of apparatus of the present invention embodiment;
Fig. 5 A, 5B, 5C are respectively access network control module, the Data Transmission Controlling module according to the relay station of apparatus of the present invention embodiment, the block diagram of the control module that exits network;
Fig. 6 is the flow chart of the access network during for terminal according to the subordinate of the inventive method embodiment station;
Fig. 7 is the flow chart of the access network during for relay station according to the subordinate of the inventive method embodiment station.
Embodiment
Functional overview
As mentioned above, under present centralized control model, if as the base station of control station by damage and can't operate as normal, then will cause communication supervisory inefficacy.And relay station has the conveniently plurality of advantages such as (for example, can use solar cell for supplying power) that is easy to carry and powers, and therefore, in technical scheme of the present invention, considers to use relay station to carry out urgent networking.Particularly, in embodiments of the present invention, in case of emergency, use relay station to come management system with distributed coordination function, particularly, the Radio Resource in the dispatching communication system, generation control messages, control subordinate station etc.In order to realize this function, can set up a kind of system configuration or, use this system configuration or, realize control for relay station to communication system by means of this distributed control model for it is provided with a kind of distributed control model.
Fig. 2 A and Fig. 2 B show exemplary base station and damage scene, are the scene of a relay station among Fig. 2 A, are the scene of two relay stations among Fig. 2 B.Wherein, the relay station among Fig. 2 A is the control station of system, and terminal 1 and terminal 2 are subordinate stations of relay station; Relay station 2 among Fig. 2 B is the control station of system, and relay station 1 and terminal 3 are the subordinate station of relay station 2, and terminal 1 and terminal 2 are the subordinate station of relay station 1.As can be seen, can't its subordinate station be managed and control, this moment, can communicate the control of network by relay station of the present invention though the base station is destroyed.In urgent scene, the relay station that the embodiment of the invention provides has the function of distributed control, that is, under the situation of no base stations control, the relay station of distributed control can independently be controlled access that the subordinate stands, withdraw from and communication path etc. under the emergency mode.
Above-mentioned scene can be the disaster scene, and relay station can insert the mobile device of the wounded under rescue personnel or the rubble, makes things convenient for the rescue personnel to understand the wounded's information such as the position condition of the injury, also can allow the rescue personnel link up each other, transmits the condition of a disaster, allocate resource.Above-mentioned scene can be the war scene also, by means of relay station, can insert the portable terminal of all fight groups temporarily, is used to control the telecommunication management of the regional communication network of fight, realizes unified command, coordinates actions.
Below with reference to the accompanying drawings and in conjunction with the embodiments, describe the present invention in detail.Need to prove that if do not conflict, embodiment and the feature among the embodiment among the application can make up mutually.
Device embodiment
Scene based on shown in Fig. 2 A or Fig. 2 B provides a kind of relay station in the present embodiment, and Fig. 3 is the block diagram of this relay station, and as shown in Figure 3, preferably, this relay station comprises: scanning element 2, control unit 4, distributed control unit 6.Below said structure is described in detail.
As can be seen, scanning element 2 is to be used for judging whether also have not destroyed base station on every side in all frequency ranges or in the scheduled time, if also have the base station of not damaging, then this relay station enters common access module, and the operation of carrying out relay station of the prior art gets final product; If the base station is all damaged, then as mentioned above, control unit 4 control relay stations insert distributed control model, under this pattern, relay station can dispatching patcher in all Radio Resource, all control messages in the generation system, control and management subordinate stations, the subordinate station here can be a terminal, also can be common relay station, hereinafter referred to as subordinate's relay station.
In order to realize control to communication system, in this relay station, be provided with distributed control unit 6, it is connected to control unit 4, be used to realize the operation of relay station under distributed control model, and preferably include one or more in the following structure, as shown in Figure 4, be the detailed diagram of distributed control unit 6, comprise: scheduling unit 8, the Radio Resource in the dispatching communication system; Control messages unit 10 is used for producing and transmitting control message standing to the subordinate; Administrative unit 12 is used to control the subordinate station.Need to prove, can in distributed control unit 6, be provided with one and wherein each unit be controlled and dispatched such as the control device of CPU.
By above-mentioned each unit, realization promptly, is controlled and is managed the network under the urgent scene by the relay station that the embodiment of the invention provides the control of the communication system under the urgent scene, to realize the timely communication of the user under disaster area or the war scene, allocate resource.
As shown in Figure 4, control unit 12 comprises: access network control module 120, Data Transmission Controlling module 122, the control module that exits network 124, memory module 126, wherein, memory module 126, be connected to the access network control module 120 and the control module 124 that exits network, be used to preserve the terminal iidentification of all terminals that insert successfully.Below above-mentioned each module is described in detail.
(1) the access network control module 120: be used to control subordinate's access network of standing.
Particularly, access network control module 120 control subordinate stations enter network development process, comprise: the control subordinate stand scanning down channel, control subordinate stand receive downstream parameter or go up line parameter, control subordinate stand send ranging code, the control subordinate stands and sends the basic capacity report message and initiate register requirement, and configuration relay station operating parameter (being relay station at the subordinate station).
Fig. 5 A has provided the structured flowchart of access network control module 120.Preferably, shown in Fig. 5 A, access network control module 120 comprises submodule 1200 and broadcasting submodule 1202 is set, wherein, submodule 1200 is set is used to terminal that identifier is set, broadcasting submodule 1202 is connected to submodule 1200 is set, and is used for the topology information that will access terminal and submodule 1200 is set identifier is set is broadcast to subordinate's relay station.Like this, disaster relief personnel can in time be known the wounded's concrete zone, are convenient to succour timely.In specific implementation process, above-mentioned identifier and topology information can be unified and be arranged in the message, also can be provided with separately.
For example, in Fig. 2 B, the identifier that is provided with for terminal 1 is A, and the identifier that is provided with for terminal 2 is B, and the identifier that is provided with for terminal 1 is C; The topology information of the terminal under the relay station 1 is 21, the subordinate station of subordinate's relay station of expression relay station 2; The topology information of the terminal under the relay station 2 is 2, the subordinate station of statement expression relay station 2.
In specific implementation process, when subordinate's relay station was wanted access network, access network control module 120 also needed to send the relay station configuration messages to subordinate's relay station, is used to dispose subordinate's relay station.
In addition, after access network is finished at the subordinate station, the frequency that needs control this side relay station and subordinate's relay station periodically to broadcast use.Like this, the frequency that searches can be preserved in the subordinate station (comprising terminal and subordinate's relay station) of access network in the process of scanning down channel, make the subordinate stand in when needing re-accessing network, the frequency that first search is preserved is convenient to the access again at subordinate station.
(2) the Data Transmission Controlling module 122
Data Transmission Controlling module 122 is connected to access network control module 120, is used to control the transfer of data between relay station and the subordinate station.Fig. 5 B has provided the structured flowchart of Data Transmission Controlling module.Preferably, shown in Fig. 5 B, Data Transmission Controlling module 122 comprises: route submodule 1220, send submodule 1222, submodule 1224 be set, broadcasting submodule 1226.
Realize the following controlled function of Data Transmission Controlling module 122 by above-mentioned submodule:,, terminal is exhaled logical control automatically to the route control of transfer of data to the broadcasting control of user profile.
1, the broadcasting of user profile is controlled
Relay station is periodically broadcasted the user profile of the end message that comprises all access networks, and each terminal of access network shows the end message that all successfully insert after receiving user profile.
2, the route of transfer of data is controlled
Above-mentioned route submodule 1220, be used to receive and resolve from the data that send terminal, the destination address of specified data sends submodule 1222, be connected to route submodule 1220, be used for data being sent to receiving terminal according to the destination address that route submodule 1220 is determined.Like this, by route submodule 1220, the data that relay station receives are resolved the acquisition destination address, promptly, receive from data, parse destination address behind the upstream data after, produce new downlink data according to destination address, and downlink data is sent to receiving terminal by the transmission submodule in the transmission control module 122 1222.
The above-mentioned submodule 1224 that is provided with is connected to route submodule 1220, is used for being provided for according to route submodule 1220 connection identifier (CID of the transmission path of identification data; Broadcasting submodule 1226, be connected to submodule 1224 is set, be used for topology information cycle or the aperiodic subordinate of being broadcast to station, wherein, carry the terminal iidentification of all terminals of the access success in the memory module in the user message user message, connection identifier (CID and transmission terminal.
Like this, by use submodule 1224 is set and a connection identifier (CID is set for each data connects, and the topology information that will send terminal by broadcasting submodule 1226 is broadcast to each subordinate's relay station with the connection identifier (CID that submodule 1224 settings are set, in specific implementation process, connection identifier (CID and the topology information that sends terminal can be unified and be arranged in the message.
3, terminal is exhaled logical control automatically
Preferably, this Data Transmission Controlling module can also comprise a control submodule 1228, is used for after the persistent call number of times that terminal receives in the given time surpasses predetermined value, and the automatic call accepted of control terminal promptly, is connected automatically.Like this, made things convenient for victims' term of being unable to stir any more in disaster relief scene or war scene rescue personnel that makes peace to link up.
(3) control module 124 that exits network
The control module 124 that exits network is connected to access network control module 120, is used to control the subordinate station and exits network.Fig. 5 C has provided the structured flowchart of the control module that exits network.Preferably, shown in Fig. 5 C, the control module that exits network 124 comprises: updating submodule 1240 and transmission submodule 1242,
Updating submodule 1240, be connected with memory module 126 (not shown annexation) are used for the terminal iidentification of all terminals of the access success of updated stored module 126 storage.
Further, the control module that exits network 124 also comprises and sends submodule 1242, is used to send be used to discharge this locality and take the resource release message of resource to subordinate's relay station.In specific implementation process, when the subordinate station in subordinate's relay station exits network, send submodule 1242 and send resource release message to subordinate's relay station, be used to discharge subordinate's relay station and dispose the resource of standing to its subordinate.
Can realize the control that relay station exits network to the subordinate station by above-mentioned updating submodule 1240 and transmission submodule 1242.In concrete implementation process, relay station can initiatively initiate to withdraw from the requirement at subordinate station, also can be the requirement that the moving initiation of subordinate station owner exits network.
Particularly, because variation has taken place the terminal of access network, relay station will upgrade the terminal iidentification that inserts all terminals successfully by updating submodule 1240, thereby upgrade topology information; Terminal and relay station at subordinate's relay station have under the mutual situation, relay station sends resource release message to subordinate's relay station release resource by sending submodule 1242, subordinate's relay station discharges the resource that terminal is given in local configuration after receiving resource release message, then terminal exits network.In concrete implementation process, the resource that subordinate's relay station discharges is the interface-free resources that interrelates with terminal.
Method embodiment
In the present embodiment, provide a kind of control method of communication system, preferably, this method can be applied to comprise the communication system of above-mentioned relay station according to the embodiment of the invention.
In control method: if relay station scans synchronizing information in down channel in all frequency ranges or in the scheduled time according to the communication system of the embodiment of the invention, then control relay station and enter distributed control model, wherein, under distributed control model, relay station is carried out following operation one of at least: the Radio Resource in the dispatching communication system, produce control messages, be used to transmit control message by the scheduling Radio Resource and control the subordinate station, the subordinate station can be a terminal, also can be subordinate's relay station.
Preferably, after entering distributed control model, relay station sends broadcast message and stands to the subordinate, and predetermined bit or predetermined lead code are set in broadcast, is used to identify relay station and has entered distributed control model.
Further preferably, relay station and subordinate's relay station can cycle or aperiodic broadcasting frequencies, be convenient to the search of terminal and other subordinate's relay stations, when terminal or subordinate's relay station need reenter network, just can pay the utmost attention to the frequency that these search like this, make terminal or subordinate's relay station access network timely.
Wherein, above-mentioned control subordinate station can comprise following three aspects: to subordinate the stand control of access network, the Data Transmission Controlling between relay station stood with the subordinate, the control that the subordinate station is exitted network.Below above-mentioned three aspects are described in detail.
(1) to the stand control of access network of subordinate
Particularly, concrete condition according to the subordinate station, promptly, one, the subordinate station is terminal, two, subordinate station is relay station (hereinafter referred to as subordinate's relay station), in the present embodiment the stand control of access network of subordinate is divided into two kinds of situations, and Fig. 6 is the flow chart of the access network of subordinate when standing to terminal, Fig. 7 is the flow chart of the access network of subordinate when standing to relay station, below in conjunction with Fig. 6, Fig. 7 the access network process under above-mentioned two kinds of situations is described in detail.
Situation one, subordinate station are terminal
Describe relay station in detail to the stand control flow of access network of subordinate in conjunction with Fig. 6, as shown in Figure 6, comprise step 1-step 10:
Step 1 when the subordinate stands access network process, at first at all frequency ranges or scheduled time interscan down channel, just inserts common access module if scan the synchronizing information of distributed control station (being relay station).
Step 3 and step 4, the relay station transmission is gone up line parameter and is stood to the subordinate.
Step 5, according to the last line parameter that receives, the subordinate stands and sends ranging code to relay station, and relay station is stood to the subordinate after receiving ranging code and is sent feedback message to realize synchronous with the subordinate station.
Particularly, after the subordinate stands and obtains the last line parameter of relay station transmission, send ranging code to relay station, and adjust line parameter, realize uplink synchronous with relay station according to the feedback message of relay station according to last line parameter.Wherein, the feedback message of relay station comprises following two types:
1, the feedback of relay station can comprise: be used to identify the ranging code that sends terminal and be used to indicate adjustment to go up the last line parameter relative value of line parameter.Send terminal after receiving feedback, on original, increase on the line parameter or reduce in the feedback given on the line parameter relative value.
2, the feedback of relay station also can comprise: be used to identify the ranging code that sends terminal and be used to indicate adjustment to go up the last line parameter absolute value of line parameter.Send terminal after receiving feedback, replace original line parameter of going up and be the last line parameter absolute value in the feedback.
Step 7, relay station receives the basic capacity report message from the subordinate station, wherein, carries the basic capacity parameter at subordinate station in the basic capacity report message.In specific implementation process, the subordinate stands, and access network process comprises and the basic capability negotiating of relay station, and the subordinate stands transmission basic capacity report message to relay station.
Step 8, relay station sends feedback message according to the basic capacity report message that receives, and wherein, feedback message comprises for the definite of the basic capacity parameter at subordinate station or negates.
Step 9, relay station is handled the registration process that the subordinate stands and initiates.In specific implementation process, the subordinate stands and sends login request message to relay station, and relay station sends feedback message after receiving login request message, and wherein, feedback message comprises for the definite of the register requirement at subordinate station or negates.
Step 10, subordinate's access network process of standing is finished, and can carry out alternately with relay station.
In the subordinate stands the process of access network, relay station also needs for the terminal of access network identifier to be set, and the identifier of the topology information of the terminal of each access network and setting is broadcast to all subordinate's relay stations of relay station, wherein, identifier and topology information can be unified and be arranged in the message, also can be provided with separately.Be described in particularly among the device embodiment and have a detailed description, repeat no more here.
Situation two, subordinate station are relay station
Describe the control flow of relay station to subordinate's relay station access network in detail in conjunction with Fig. 7, as shown in Figure 7, comprise step 1-step 11, wherein the flow process of the step 1-step 9 in the flow process of step 1-step 9 and the above-mentioned situation one is identical.Different with the flow process of situation one is that after step 9 registration was finished, step 10 was given subordinate's relay station for relay station and disposed the relay station parameter.
Particularly, relay station sends the relay station configuration messages to subordinate's relay station, and subordinate's relay station receives after the relay station configuration messages, sends feedback message, wherein, comprises in the feedback message receiving the success or not of relay station configuration messages.Configuration parameter can be so that subordinate's relay station identifies itself as the relay station of dcs with bit predetermined in lead code predetermined in the broadcast or the broadcast, upstream (being relay station) from subordinate's relay station, this subordinate's relay station is a controlled relay station, from the downstream (being the subordinate station of subordinate's relay station) of subordinate's relay station, this subordinate's relay station is the relay station of a dcs.
After access network is finished at the subordinate station, the frequency that relay station and subordinate's relay station are periodically broadcasted use.Like this, the frequency that searches can be preserved in the subordinate station (comprising terminal and subordinate's relay station) of access network in the process of scanning down channel, make the subordinate stand in when needing re-accessing network, the frequency that first search is preserved is convenient to the access again at subordinate station.
(2) to the Data Transmission Controlling between relay station and the subordinate station
Can comprise the Data Transmission Controlling between relay station and the subordinate station: logical control is controlled, exhaled automatically to the broadcasting control of user message, transfer of data route, below is described in detail facing to three aspects.
1, the broadcasting of user message control: relay station is with user message cycle or the aperiodic subordinate station that is broadcast to, wherein, carry the terminal iidentification of all terminals of access network in the user message, each terminal of access network shows the end message that all successfully insert after receiving user profile.
In concrete implementation process, it is sorted end message that the user profile of relay station broadcasting can be passed through, for example, the victims of the disaster (non-moving) under rescue personnel (mobile) and the rubble can be distinguished according to mobility classification in the disaster relief, the group of different regions can be distinguished on the battlefield according to the position classification.Like this, the reseaching staff can find to be buried in the victims of the disaster in the ruins in the disaster relief, and the soldier can find the member of different fight group on the battlefield.
2, transfer of data route control, relay station is that transfer of data connects, connect and initiatively to initiate by terminal, the relay station response, perhaps initiatively initiate terminal response by relay station, wherein the connection of data can be identified separately by connection identifier (CID, also can unite sign by connection identifier (CID and terminal identifier.Relay station receives from the data that send terminal in the connection of setting up and resolves this data, on this connects data is sent to receiving terminal then, and in addition, topology information and connection identifier (CID that relay station will send terminal are broadcast to all subordinate's relay stations.Wherein, connection identifier (CID and the topology information that sends terminal can be unified and be arranged in the message, also can be provided with separately.
Particularly, relay station can resolve destination address, produce corresponding data and connect, be provided with connection identifier (CID, be forwarded to receiving terminal after producing new downlink data from the data of the data of application layer or media access control layer.Accordingly, comprise destination address in the data of application layer or the data of media access control layer, destination address can comprise internet protocol address in the data of application layer, and the destination address in the data of media access control layer can comprise connection identifier (CID and/or terminal identifier.
In specific implementation process, the data that send the terminal transmission can be to issue other a plurality of terminals of access network, issuing the data of other a plurality of terminals during relay station needs upstream data after receiving these data takes out respectively, parse the destination address of each receiving terminal respectively, and the generation downlink data sends to each receiving terminal.
In the specific implementation process, the scheduling of resource of transfer of data can be finished by distributed control relay station, also can dispatch the part resource in advance by distributed control relay station and give subordinate's relay station through consultation, subordinate's relay station is further dispatched this part scheduling of resource then.
3, exhale logical control automatically, if the persistent call number of times that terminal receives in the given time surpasses predetermined value, the then automatic call accepted of relay station control terminal.Like this, made things convenient for victims' term of being unable to stir any more in disaster relief scene or war scene rescue personnel that makes peace to link up.
For example, the scheduled time is three minutes, and pre-determined number is a secondary, and when terminal received three callings in three minutes, preceding two callings did not all have to connect, then terminal connection automatically when receiving the 3rd calling.Like this, the victims' term that helps to be unable to stir any more in the disaster relief scene rescue personnel that makes peace links up, and perhaps injured irremovable soldier's term comrade-in-arms that makes peace links up on the battlefield.
(3) control that the subordinate station is exitted network
According to the concrete condition at subordinate station, the control that in the present embodiment subordinate station is exitted network is divided into two kinds of situations:
Situation one, subordinate station are terminal
The control that the subordinate station is exitted network comprises: the relay station update user information, wherein, user profile is used to identify all subordinate stations of access network.
Situation two, subordinate station are relay station
When the terminal of subordinate's relay station exits network, the control flow that terminal in above-mentioned situation one exits network, relay station also needs to send resource release message to relevant subordinate's relay station, and relevant subordinate's relay station receives and discharges after the resource release message and interface-free resources that terminal interrelates.
When subordinate's relay station exits network, be similar to situation one, the relay station update user information; After subordinate's relay station exitted network, the subordinate station of this subordinate's relay station switched to other relay stations or relay station, and flow process at this moment and the common relay station that comprises change as broad as longly in interior intra-cell, repeat no more here.
In concrete implementation process, relay station can initiatively initiate to withdraw from the requirement at subordinate station, also can be the requirement that the moving initiation of subordinate station owner exits network.
In sum, can be implemented in by the relay station with distributed coordination function under the situation of no base stations control, independent whole communication network is controlled, realize to the subordinate station access, withdraw from, the control of transfer of data.
Compared with prior art, the present invention can need not to consider the internet protocol address of the Internet, simplifies access process, finishes the access network process at subordinate station fast, in time carries out rescue action.For example, can only set up the connection that medium are got involved key-course.In addition, the application layer address that also can set up a this locality connects, and local application layer connects can use virtual IP address.Whether for each user, it is virtual to distinguish this IP address, therefore can finish normal access process, and the management of addressing also can be carried out in the virtual IP address of relay station utilization oneself.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with the general calculation device, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the storage device and carry out by calculation element, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (16)
1. the control method of a communication system is characterized in that, relay station enters distributed control model, under described distributed control model, described method comprise following one of at least:
The Radio Resource of described relay station dispatch network, described relay station produce control messages, described relay station and are used to send described control messages and control its subordinate station by dispatching described Radio Resource, and wherein, described subordinate station comprises terminal and/or subordinate's relay station.
2. method according to claim 1 is characterized in that, the condition that described relay station enters distributed control model comprises:
Described relay station does not scan synchronizing information in down channel in all frequency ranges or in the scheduled time.
3. method according to claim 1, it is characterized in that, described control subordinate station comprise following one of at least: to described subordinate the stand control of access network, the Data Transmission Controlling between described relay station and described subordinate stood, the control that described subordinate station is exitted network.
4. method according to claim 3 is characterized in that, to described subordinate stand the control of access network comprise following one of at least:
Receive the ranging code that described subordinate stands and sends, and to described subordinate stand send feedback message with realize with described subordinate station synchronously;
Reception is from the basic capacity report message at described subordinate station;
Handle the registration process that described subordinate stands and initiates;
For the terminal of access network is provided with identifier, and with the topology information of the described terminal of access network and all subordinate's relay stations that described identifier is broadcast to described relay station.
5. method according to claim 4 is characterized in that, if described subordinate station is described subordinate's relay station, then the stand control of access network of described subordinate is also comprised:
Send configuration messages to described subordinate's relay station.
6. method according to claim 3 is characterized in that, to the Data Transmission Controlling between described relay station and the described subordinate station comprise following one of at least:
The broadcasting control of user message, described relay station wherein, carries the terminal iidentification of all terminals of access network with user message cycle or the aperiodic described subordinate station that is broadcast in the described user message;
The control of transfer of data route, described relay station is that transfer of data connects, and receives from the data that send terminal and after resolving described data by described connection described data are sent to receiving terminal;
Automatically exhale logical control, if the persistent call number of times that described terminal receives in the given time surpasses predetermined value, then described relay station is controlled the automatic call accepted of described terminal.
7. method according to claim 6 is characterized in that, described relay station receives and resolves from after the data that send terminal, and described method also comprises:
Be provided for identifying the connection identifier (CID of the transmission path of described data;
All subordinate's relay stations that the topology information and the described connection identifier (CID of described transmission terminal is broadcast to described relay station.
8. method according to claim 3 is characterized in that, the control that described subordinate station is exitted network comprises:
Described relay station upgrades the user profile that is used to identify described subordinate station;
Withdraw under the situation of described network at the subordinate station of described subordinate's relay station, described relay station sends to described subordinate's relay station and is used to indicate the local message that takies resource of release.
9. method according to claim 8 is characterized in that, if described subordinate station is described subordinate's relay station, then the control that described subordinate station is exitted network also comprises:
The subordinate station that described relay station is controlled described subordinate's relay station switches to other subordinate's relay stations or described relay station or other relay stations.
10. according to each described method in the claim 1 to 9, it is characterized in that after described relay station entered distributed control model, described method also comprised:
Send broadcast message and stand, and predetermined bit or predetermined lead code are set in described broadcast, be used to identify described relay station and entered described distributed control model to described subordinate.
11. according to each described method in the claim 1 to 9, it is characterized in that, after described relay station entered distributed control model, described method also comprised: stand search and preserve the frequency of all subordinate's relay stations broadcasting of described relay station and described relay station of described subordinate.
12. a relay station is characterized in that, comprising:
Scanning element is used to scan the synchronizing information of down channel;
Control unit is used for satisfying under the situation of predetermined condition, controls described relay station and enters distributed control model, and described predetermined condition is: described scanning element does not scan synchronizing information at described down channel in all frequency ranges or in the scheduled time;
Distributed control unit is used to realize the operation of described relay station under described distributed control model, comprise following one of at least:
Scheduling unit is used for the Radio Resource of dispatching communication system;
The control messages unit is used for producing and transmitting control message standing to the subordinate;
Administrative unit is used to control described subordinate station;
Wherein, described subordinate station comprises terminal and/or subordinate's relay station.
13. relay station according to claim 12 is characterized in that, described administrative unit comprises:
The access network control module is used to control the described subordinate access network of standing;
The Data Transmission Controlling module is used to control the transfer of data between described relay station and the described subordinate station;
The control module that exits network is used to control described subordinate station and exits network;
Memory module is used to preserve the terminal iidentification of all terminals of access network.
14. relay station according to claim 13 is characterized in that, described access network control module comprises:
Submodule is set, is used to terminal that identifier is set;
The broadcasting submodule is used for the topology information and the described described identifier that the submodule setting is set of the terminal of access network are broadcast to subordinate's relay station.
15. relay station according to claim 13 is characterized in that, described Data Transmission Controlling module comprises:
The route submodule is used to receive and resolve from the data that send terminal, determines the destination address of described data;
Send submodule, be used for described data being sent to receiving terminal according to the described destination address that described route submodule is determined;
The control submodule is used for controlling the automatic call accepted of described terminal after the persistent call number of times that terminal receives in the given time surpasses predetermined value;
Submodule is set, is used for being provided for identifying the connection identifier (CID of the transmission path of described data according to the described destination address that described route submodule is determined;
The broadcasting submodule is used for topology information cycle or the aperiodic described subordinate station that is broadcast to user message, described connection identifier (CID, described transmission terminal, and wherein, carries the described terminal iidentification of preserving in the described memory module in the described user message.
16. relay station according to claim 13 is characterized in that, the described module that exits network comprises:
Updating submodule is used for upgrading the described terminal iidentification of described memory module;
Send submodule, be used to send and be used to discharge this locality and take the resource release message of resource to described subordinate's relay station.
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| CN200810175949XA CN101730198B (en) | 2008-10-31 | 2008-10-31 | Method and relay for controlling communication system |
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| CN200810175949XA CN101730198B (en) | 2008-10-31 | 2008-10-31 | Method and relay for controlling communication system |
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| CN101064901B (en) * | 2006-04-29 | 2010-09-15 | 上海贝尔阿尔卡特股份有限公司 | Access method for wireless multi-hop relay access network, relay station, base station, and system |
| CN100596235C (en) * | 2006-12-15 | 2010-03-24 | 华为技术有限公司 | Method and system for scheduling of resource based on wireless system |
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