CN1468498A - Method for dynamic allocation of communication channel - Google Patents
Method for dynamic allocation of communication channel Download PDFInfo
- Publication number
- CN1468498A CN1468498A CNA008196818A CN00819681A CN1468498A CN 1468498 A CN1468498 A CN 1468498A CN A008196818 A CNA008196818 A CN A008196818A CN 00819681 A CN00819681 A CN 00819681A CN 1468498 A CN1468498 A CN 1468498A
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- mobile station
- base station
- channel
- service
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/06—Reselecting a communication resource in the serving access point
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention provides a method for communication channel dynamic allocation, wherein the down chain communication service channels are divided into a plurality of service channel groups, each mobile station in the data service status belongs to one service channel group, monitor all the data service channels in the service channel group and extract the sectionalized exchange data of its own mobile station. Preferably, when excess load occurs in the flow capacity in certain communication channel group, the mobile station is switched from the present service channel it belongs to other idler service channel groups. The method can greatly reduce the complexity and difficulty of the mobile station design.
Description
The method of dynamic allocation of communication channel
Technical field
The present invention relates to a kind of method of mobile communication, more particularly to a kind of dynamic allocation method of communication channel for flexible, rational dynamic allocation of communication channel, but is not limited to this.Background of invention
The main business that first generation simulation mobile communication and second generation digital mobile communication are undertaken is voice service and limited data service.And 3G (Third Generation) Moblie will undertake more business including voice, image, the transmission rate that it needs is from a few kbps to 2M bps, therefore how flexible, reasonable arrangement channel resource turns into the key issue discussed in 3G (Third Generation) Moblie with the requirement for adapting to different business.In addition, in 3-G (Generation Three mobile communication system), due to the extension of class of business, the portfolio of uplink and downlink link will have very big difference, and the portfolio of downlink will generally be more than the portfolio of up-link.For example, for the user of online browsing is carried out using notebook computer, the information content received is much larger than the information content sent.And this kind of business will turn into one of main business of future wireless system.
Thus, in 3-G (Generation Three mobile communication system), if in design data service mobile communication net, also as in the past like that in the air in interface merely using the circuit exchange mode progress data interaction used in mobile radio communication of the prior art, it would become hard to adapt to the demand of new business, especially burst data services.So if when carrying out data transmission, both wishing to ensure that communication quality, the utilization rate of communication channel is wished to ensure that again, then will be difficult for this industry in this case
The appropriate communication channel of business distribution.To solve this problem, we are readily conceivable that block exchange mode.The problem of packet switch can undoubtedly be solved above.Block exchange mode is that uncertain communication channel, i.e. base station be not specifically to mobile station distribution channel before data is transmitted, and mobile station will monitor all communication channels, therefrom extract one's own data.The method of dynamic allocation of communication channel is a lot, such as the method that patent US005790551 is illustrated.In patent US005790551, base station and mobile station carry out signaling exchange by uplink service control channel and downlink business control channel, realize the dynamically distributes of Traffic Channel.On the dynamically distributes of downlink traffic channel, this patent show it is in need carry out data service mobile station to monitor all data traffic channels, therefrom extract the information of this mobile station.This method is applied to the situation when data traffic channels negligible amounts, and in 3G (Third Generation) Moblie, due to class of business, the great variety of portfolio, if reapplying such a dynamic allocation method, then the monitoring to data traffic channels will make mobile station expend substantial amounts of hardware facility and the energy content of battery, add the complexity and difficulty of mobile station design.The content of the invention
Communication channel allocation method simple, applied widely is realized it is an object of the invention to provide a kind of, substantial amounts of hardware facility and the energy content of battery are expended to avoid mobile station as data service is adapted to, and the substantially complexity and difficulty of reduction mobile station design.
In the communication system including a fixed network and multiple user terminals, the invention provides the scheme of such a dynamic allocation of communication channel：Downlink traffic channel is drawn
It is divided into several Traffic Channel groups, any mobile station in data service state belongs to a Traffic Channel group, monitors data traffic channels all in the Traffic Channel group, therefrom extract the packet switched data of this mobile station.
Preferably, in the case of the flow overload of some Traffic Channel group, during mobile station is switched to other more idle Traffic Channel groups from the Traffic Channel group of current home.
Preferably, uplink data traffic uses circuit exchange mode or block exchange mode.
Preferably, described communication channel is time division duplex（TDD) channel, in data service, the communication traffic channel resource of downlink distribution is more than the communication traffic channel resource that up-link is distributed.According to the dynamic allocation method of communication channel proposed by the present invention, because mobile station without monitoring all downstream data traffic channels again, mobile station for adaptation data service also just without increasing more hardware, power consumption of the mobile station in data service is substantially reduced simultaneously, effectively increase the service life of battery.The method of the present invention, can reduce the complexity and difficulty of mobile station design, using this method, can effectively utilize traffic channel data, it is adaptable to the mass data business in digital mobile communication system.Brief Description Of Drawings
For the purpose of the present invention, scheme and advantage is more clearly understood, below especially exemplified by preferable
Embodiment and the present invention is described in more detail with reference to accompanying drawing.
Fig. 1 is that the cylinder of GSM wants block diagram；
Fig. 2 is the schematic diagram of communication traffic channel used by taking TDD- CDMA mobile communication systems as an example, wherein（I, J), I represents timeslot number, and J represents code channel number；
Fig. 3 is the packet diagram for illustrating communication traffic channel；
Fig. 4 is the flow chart that mobile station realizes downstream data traffic in the second preferred embodiment of the invention；
Fig. 5 be in the second preferred embodiment of the invention base station to realize downstream data traffic, the flow chart of dynamically distributes downstream data traffic channel；
Fig. 6 is the flow chart that mobile station realizes upstream data service in the second preferred embodiment of the invention；
Fig. 7 be in the second preferred embodiment of the invention base station to realize upstream data service, the flow chart of dynamically distributes upstream data service channel；
Fig. 8 is the flow chart of progress resource switch in base station in the 3rd preferred embodiment of the invention；Fig. 9 is the flow chart of mobile station progress resource switch in the 3rd preferred embodiment of the invention.Implement the mode of the present invention
Below in conjunction with the accompanying drawings and preferred embodiment, the method to the dynamic allocation of communication channel of the present invention does specific description in more detail.
All communication traffic channels are divided into several groups by the present invention, while the mobile station in traffic state to be also divided into the group of equivalent amount, the Traffic Channel of certain group provides communication service for group number identical mobile station.When the flow overload of certain group Traffic Channel, some mobile stations of the group can be switched in other Traffic Channel groups, to reach the purpose to this group of Traffic Channel flow Slow solution.
Fig. 1 gives and a base station and a mobile station is show only in the schematic block diagram of a GSM, figure, and real system will include multiple base stations and multiple mobile stations.In figure, communication channel 102 links together mobile station 101 and base station 103：Upstream data is mapped in uplink communication channel 102 by mobile station 101, sends base station 103 to;Downlink data is mapped in downlink communication channel 102 by base station 103, sends mobile station 101 to.Wang Network controllers 104 link together base station 103 and core net 105, and it is with the exchange data information of base station 103, and there is provided various other functions, information router, scheduling, Wang Network controls etc..Core net 105 is a polytype signal source for some base station, while some information of demand base station.In the first preferred embodiment of the present invention, described communication channel is time division duplex (TDD) channel, in data service, and the communication traffic channel resource of downlink distribution is more than the communication traffic channel resource that up-link is distributed.Below with TDD- CDMA mobile communication systems（Time division CDMA GSM）Exemplified by, explain the institutional framework of communication channel in the present invention.
Such as Fig. 2, it will be assumed that this system has 12 time slots, each time slot can be used for Traffic Channel in the presence of 8 code channels per frame 10ms.So, in the present system, we can assume that having 12*8=96 communication traffic channel per 10ms.We to each Traffic Channel marked as（I, J), wherein I represents timeslot number, and J represents code channel number.This 96 Traffic Channels, which are divided into six groups, (can also be divided into four groups, three groups or two groups, this determines the maximum data flow provided according to the system, we are only explained exemplified by six groups）.
Such as Fig. 3,96 Traffic Channels are divided into six groups, and we are given per deck label as group 1 (1=1,2,6).Wherein, group I represents the set of the set, totally 16 communication channels of time slot I 8 code channels and time slot 1+6 8 code channels.So, 96 Traffic Channels divide into 6 groups, every group of 16 communication channels by we.
In data service GSM, the up-downgoing business of air interface is asymmetric, and upstream data service amount is smaller, and downstream data traffic amount is larger.The present embodiment Zhong Te Do are proposed when upper and lower link traffic anisochrouous communication channel Dynamic Assignment, so that the service feature under improving digital communication system.We can will group 6 distribute to it is up, group 1-5 distribute to it is descending.So, the ability that the system provides up-downgoing business is 1 to 5.It is optimal ratio that this ratio, which is not represented, specifically how to carry out the distribution of uplink and downlink communication resource, will be determined according to actual up-downgoing portfolio.
From the angle of air interface, the characteristic that we treat up-downgoing data service is also different.The flow of upstream data service can be controlled, and the flow of downstream data traffic is difficult to control to, therefore, and we realize that the method for up-downgoing data service is also differed.In group, downlink data industry
Business is realized using packet switch, in total upstream data service channel, and upstream data service is realized using circuit exchange mode.Fig. 4 be the present invention the second preferred embodiment in mobile station realize the flow chart of downstream data traffic.Fig. 4 indicates Mobile Terminal and obtains downlink communication Traffic Channel, and carries out the process of downstream data traffic.When user needs to carry out downstream data traffic, mobile station will send " downstream data traffic requirement message " to base station, the response of base station then be waited, into 402 states.If the message that base station is responded to mobile station is " No Assets message ", that is, show that present resource is nervous, without downlink traffic channel, then mobile station will terminate this time to operate.If the message that base station is responded to mobile station is " channel assignment message ", then mobile station will send confirmation message to base station, show to have received this message, and enter 403 states.In 403 states, mobile station will be monitored according to the instruction , Dui Group I of " channel assignment message " that receives, and wherein one's own message extraction is come out, then into 404 states.In 404 states, the message extracted is analyzed, if the message extracted is " service ending message,, then mobile station will terminate this time to operate, and otherwise mobile station will handle this message according to upper-layer protocol.
Fig. 5 be in the second preferred embodiment of the invention base station to realize downstream data traffic, the flow chart of dynamically distributes downstream data traffic channel.Fig. 5 indicates base station and receives what mobile station was sent " downstream data traffic requirement message, after, carry out the process of traffic channel assignments.When receiving " the downstream data traffic requirement message " of mobile station, base station will be to current downlink data
The state of Traffic Channel is estimated.If assessment result shows that downstream data traffic channel resource is nervous, then base station will be sent " No Assets message " to mobile station, and terminates this time to operate.If assessment result shows downstream data traffic, channel resource takes it easy, then base station will find out one group of more idle group I according to as above analyzing, and send " channel assignment message " to this mobile station, and enter 502 states.In 502 states, base station is by " the channel distribution confirmation message " of receiving mobile.After " channel distribution confirmation message " is received, base station knows that mobile station has been prepared for receiving data in group I communication traffic channel, then notifies core net air interface resource to be already prepared to, and enters 503 states.In 503 states, the message that base station sends core net in the communication traffic channel for being mapped to group I, is sent to mobile station.If what core net was sent is " service ending message,, then base station will remove record of this mobile station in group I, and this message is sent into mobile station, then terminate this time to operate.Otherwise, base station will continue to monitor core net, and the message for belonging to this mobile station is sent into this mobile station.
Fig. 6 indicates the process that mobile station in the present embodiment applies for uplink communication Traffic Channel to base station.When needing to carry out upstream data service, mobile station is sent " upstream data service requirement message " to base station, and enters 602 states.In 602 states, mobile station will receive the related news of base station.If the message received is " No Assets message ", then mobile station will terminate this time to operate.If the message received is " having message related to resources ", then mobile station will carry out service negotiation with base station.The content of service negotiation mainly includes providing how many upstream data service channels for mobile station.If service negotiation fails, then mobile station will terminate this time to operate.No shellfish ' mobile station will receive " channel assignment message " of base station.According to " channel assignment message "
Content, upstream data is mapped in corresponding upstream data service channel by mobile station, is sent to base station.Finish if up data service, then mobile station will be sent " service ending message " to base station.
Fig. 7 is indicated after " the upstream data service requirement message " that base station in the present embodiment receives mobile station, distributes the process of upstream data service channel.After " the upstream data service requirement message " that receives mobile station, the state of upstream data service channel will be analyzed in base station.If without idle upstream data service channel, then base station will be sent " No Assets message " to mobile station, and terminating this time to operate.If available free upstream data service channel, then base station will be sent " having message related to resources " to mobile station, and enter 702 states.In 702 states, base station will hold consultation with mobile station, discuss the pattern of the channel specifically distributed.If consulting failure, base station will terminate this time to operate.If consulted successfully, base station will send " channel assignment message " of corresponding contents to mobile station, and enter 703 states according to negotiation result.In 703 states, base station will monitor allocated upstream data service channel.After the message of mobile station transmission is received, base station will be transmitted to this message core net, and judge this message.If this message is " service ending message ", then base station will terminate this time to operate.If this message is not " service ending message ", then base station will continue to monitor allocated upstream data service channel.Because downstream data traffic flow is non-constant, we it is difficult to ensure that distribute the reasonability of channel first.Thus, in the 3rd preferred embodiment of the present invention, we are according to different groups
The data service flow of change, is adjusted to downstream data traffic channel.Specific method of adjustment is as follows：If group I is difficult to the data service flow for bearing needs transmission, so some mobile stations corresponding to group I are transferred in other groups, if other groups also are difficult to bear increased data service flow, then the downstream data traffic that force disconnect provides for some mobile stations will be considered.
Fig. 8 is the flow chart of progress resource switch in base station in the 3rd preferred embodiment of the invention.When Fig. 8 indicates base station and detects the overload of group I flows, the method for load sharing between the group and group taken.Detect after the overload of group I flows, base station will detect other groups of traffic conditions, find out a more idle group group J.According to each mobile station traffic conditions in group I and group J traffic conditions, the mobile station A that selection group I is serviced is switched in group J, then thinks that mobile station A sends " resource switch message ", and enter 802 states.In 802 states, " resource switch confirmation message " that base station receiving mobile is sent, mobile station shows that mobile station has been prepared for receiving data in group J data traffic channels with this message.Receive after " resource switch confirmation message ", base station will remove records of the mobile station A in group I, and record group J services for mobile station A.Hereafter, if base station receives the message that core net is sent to mobile station A, then base station will be mapped to this message in group J data traffic channels, be sent to mobile station A.
Fig. 9 is the flow chart of mobile station progress resource switch in the 3rd preferred embodiment of the invention.Fig. 9 indicates mobile station and received after " resource switch message " that base station is sent, the resource switch process taken.Receive after " resource switch message " that base station is sent, mobile station is by the instruction according to this message（Group is switched to from a group I；！), monitoring group I and group J data service
Channel, and sent " resource switch confirmation message " to base station.Hereafter, if mobile station is from group
J is received after the message that base station is sent, then mobile station will stop to a group monitoring for I datum Traffic Channel, and Jin Dui Group J data traffic channels are monitored.One of ordinary skill in the art is obviously clear and understands, the preferred embodiment that the present invention is lifted is not intended to limit the invention only to illustrate the present invention, and the present invention is for the technical characteristic in each embodiment, Ke Yi Ren Yi Group are closed, without departing from the thought of the present invention.According to the method for dynamic allocation of communication channel disclosed by the invention, modification disclosed invention can be there is many ways in which, and in addition to the above-mentioned preferred embodiment specifically given, the present invention can also have other many embodiments.Therefore, all category can obtain method or improvement according to present inventive concept, within the interest field that should be included in the present invention.
Claims (6)
- Claims1st, a kind of method of dynamic allocation of communication channel, it is characterized in that, downlink traffic channel is divided into several Traffic Channel groups, any mobile station in data service state belongs to a Ye business Xin Dao Group, data traffic channels all in the Traffic Channel group are monitored, the packet switched data of this mobile station is therefrom extracted.1st, the method as described in claim 1, it is characterised in that in the case of the flow overload of some Traffic Channel group, during mobile station is switched to other more idle Traffic Channel groups from the Traffic Channel group of current home.3rd, the method as described in claim 1, it is characterised in that uplink data traffic uses circuit exchange mode or block exchange mode.4th, the method as described in claim 1, it is characterised in that described communication channel is time division duplex channel, in data service, the communication traffic channel resource of downlink distribution is more than the communication traffic channel resource that up-link is distributed.5th, the method as described in claim 1,2,3 or 4, it is characterised in that base station, according to the request of mobile station, is that mobile station sets up data service service, this is set up process and comprised the steps of：Information on services the need for base station receiving mobile is sent；Base station is estimated to each downstream data traffic channel group, is found out and selected more idle data traffic channels group；More than base station record selected Traffic Channel group provides Radio Resource for mobile station, and to Mobile station sends channel assignment message；Mobile station sends channel distribution confirmation message to base station, and monitors the data traffic channels of distributed Traffic Channel group, in case therefrom extracting one's own service message；The service message that core net issues mobile station is mapped in selected communication traffic channel group by base station, is transmitted to mobile station.6th, the method as described in claim 1,2,3 or 4, it is characterized in that, in the case of the flow overload of some Traffic Channel group, during mobile station is switched to other more idle Traffic Channel groups from the Traffic Channel group of current home, the switching comprising Yi Xia Bu Sudden：Base station detects the overload of certain channel group flow；The traffic conditions of other channel groups are detected in base station, find out most idle channel group；Base station sends resource switch message to mobile station；Mobile station is received after the handover request that base station is sent, and sends switch acknowledgment message to base station, and monitor former Ye business Xin Dao Group and the data traffic channels by the new business channel group of distribution；Base station is received after mobile station switch acknowledgment message, stops the service that former Traffic Channel group is this mobile station, and record new business channel group services for this mobile station；Base station receives the service message for being sent to mobile station, the service message is mapped in the data traffic channels group after switching, and be sent to mobile station；Mobile station judges whether received service message is mapped in new industry, business channel group, in this way, then stops the data traffic channels of the former Traffic Channel group of monitoring, only monitor new business channel The data traffic channels of group.7th, the method as described in claim 1,2,3 or 4, it is characterized in that, uplink data traffic uses circuit exchange mode or block exchange mode, the uplink traffic request sent according to mobile station, base station is that mobile station sets up uplink data traffic service, and this is set up process and comprised the steps of：Base station receives upstream data service request message from mobile station；The state of upstream data service channel is analyzed in base station, in the case of available free upstream data service channel, and being sent to mobile station has message related to resources；Base station carries out service negotiation with mobile station, in the case of consulting successfully, and base station sends the corresponding channel assignment message for consulting content according to negotiation result to mobile station；Base station monitoring distributes to the upstream data service channel of mobile station, and the service message that receiving mobile is sent simultaneously is forwarded to core net.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2000/000220 WO2002013561A1 (en) | 2000-08-03 | 2000-08-03 | Dynamic allocation method of communication channel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1468498A true CN1468498A (en) | 2004-01-14 |
| CN1214681C CN1214681C (en) | 2005-08-10 |
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ID=4574677
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN00819681.8A Expired - Fee Related CN1214681C (en) | 2000-08-03 | 2000-08-03 | Method for dynamic allocation of communication channel |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN1214681C (en) |
| AU (1) | AU2000264238A1 (en) |
| WO (1) | WO2002013561A1 (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69427404T2 (en) * | 1994-10-26 | 2001-11-08 | Ibm | Allocation method and apparatus for reusing network resources in a wireless communication system |
| US5790551A (en) * | 1995-11-28 | 1998-08-04 | At&T Wireless Services Inc. | Packet data transmission using dynamic channel assignment |
| US6002935A (en) * | 1997-05-22 | 1999-12-14 | At&T Corp | Wireless communications cellular architecture for improving communications resource allocation |
-
2000
- 2000-08-03 WO PCT/CN2000/000220 patent/WO2002013561A1/en active Application Filing
- 2000-08-03 CN CN00819681.8A patent/CN1214681C/en not_active Expired - Fee Related
- 2000-08-03 AU AU2000264238A patent/AU2000264238A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| CN1214681C (en) | 2005-08-10 |
| WO2002013561A1 (en) | 2002-02-14 |
| AU2000264238A1 (en) | 2002-02-18 |
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