CN102300319B - Method for distributing wireless channels based on cells along railway - Google Patents
Method for distributing wireless channels based on cells along railway Download PDFInfo
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- CN102300319B CN102300319B CN 201110300193 CN201110300193A CN102300319B CN 102300319 B CN102300319 B CN 102300319B CN 201110300193 CN201110300193 CN 201110300193 CN 201110300193 A CN201110300193 A CN 201110300193A CN 102300319 B CN102300319 B CN 102300319B
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Abstract
The invention discloses a method for distributing wireless channels based on cells along a railway. The method comprises the following steps of: registering a train identity; drawing up a railway cell list; forecasting the arrival of a train; preserving resources on a base station; withdrawing wireless resources for the base station; and logging off the train identity. In the invention, wireless channels are distributed to linear cells covered on the running route of the train according to the characteristic of fixed running direction of the train, so that the problem of wireless resource tension caused after the arrival of a highs-speed train at a certain cell is solved effectively, and the frequency spectrum utilization ratios of cells along the railway are increased.
Description
Technical field
The present invention relates to railway and cellular digital moving communicating field, relate in particular to a kind of wireless channel distribution method based on train cellular cell along the line.
Background technology
Allocation of radio resources is an important link-layer technologies, and it has played irreplaceable effect for improving wireless network capacitance.From scope, RRM is divided into three major parts: allocation of radio resources, mobile management, spectrum management.Wherein, allocation of radio resources be in the wireless system in unique user or the residential quarter all users' performance give each user as criterion with intrasystem allocation of radio resources.Channel allocation mechanism is with solving in system to which channel of user assignment.It reaches the purpose that improves power system capacity or QoS of customer by the allocation schedule to the channel resource of the different dimensions such as frequency spectrum, time slot.The dimension that channel resource in the different system comprises is different, and tdma system is time slot, and the FDMA system is frequency range, and cdma system is code word, and the 0FDMA system then is time frequency two-dimensional resources.Packet scheduling provides business datum and wraps in output order in the buffering area formation.Dispatching algorithm is then according to definition grouping output criterions sequentially such as buffer size, service bandwidth demand, packet delay requirement, radio channel states.Channel allocation then is for belonging to the different user data transfer resource that is responsible for assigning.For the single carrier channel system, user's packet is scheduled and has just obtained channel, and namely packet scheduling is identical with the channel allocation effect.For the multiple carrier channel system, owing to once may exist a plurality of channels that can select to transmit in the scheduling, also need to carry out channel allocation after the packet scheduling.Most of algorithms all are that packet scheduling and channel allocation are joined together to consider.In the 3G system, channel allocation is relatively simple, is not combined with packet scheduling.In the 4G system, channel allocation is combined with packet scheduling, considers on the one hand channel quality, considers on the one hand the QoS of survice requirement, and a lot of theoretical researches all attempt to provide the best compromise of system frequency utilance and service feature.
The residential quarter of Along Railway is that wire covers, travelling carriage on the train information that relates to of communicating by letter with network side only has former and later two residential quarters, and in the urban district, in the train cellular cell driving process along the railway, also can run into the problem of Radio Resource reasonable distribution, and this problem only relates to next residential quarter that will arrive in residential quarter, train place and the train driving process basically.Whole train travelling process all needs to remain the communication between the car ground.So will constantly utilize the local resource of process along the line to provide service for the train user, but can the user in the Along Railway cellular cell be affected greatly, communication disruption appears, the situation that lacks wireless channel such as can't access.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of wireless channel distribution method based on train cellular cell along the line, the problem of the resource anxiety that causes owing to train crosses with the cellular cell of further solution Along Railway.
Technical scheme of the present invention is: a kind of wireless channel distribution method based on train cellular cell along the line comprises the steps:
(1) running number registration step, the mobile management device on the train send the request of registration running number to network side, network side obtains train number number;
(2) cell list establishment step along the line, described network side is according to described train number number and pre-stored cell data along the line, establishment train operation cell list and numbering along the line;
(3) predict at hand step of train number, mobile management device on the train periodically sends the train driving relevant information to network side in the process of moving, by relevant information is processed, draw the time that next residential quarter needs that arrives, when this time during less than the time gate limit value of a certain setting, network side sends message to next cell base station, notifying it to prepare the channel reservation resource is railer's service on the horizon, pass through simultaneously the Information Statistics of obtaining the first two Along Railway cellular cell the reservation stock number and feed back to next residential quarter, notify it to reserve rational channel resource, avoid waste;
(4) the resource step is reserved in the base station, next cell base station is according to the relevant information of described train cycle renewal and pre-stored cell data along the line, reclaim Radio Resource in the residential quarter, be reserved as this train travelling carriage service is provided, wherein, the feedback of the obligate information of the first two Along Railway cellular cell of passing through of the amount of radio resources of reservation is determined;
(5) the Radio Resource step is regained in the base station, after train sailed out of this residential quarter certain hour, this cell base station was recovered as the Radio Resource that train is reserved, for this community user provides normal communication service, simultaneously, the resource of lending is reclaimed in the abutting subdistrict base station by the overlay region relay station;
(6) running number is nullified step, after train arrival, carries out the cancellation of running number, and network side resource allocation methods new after train number's number cancellation is no longer applicable.
As the further improvement of said method, further comprising the steps of:
(1) community user is attempted the access step, and the user has communication requirement in the residential quarter that train is about to pass through, and sends access request information to this cell base station;
(2) the channel step of abutting subdistrict, because channel is recovered as the user's service on the train, this this cell channel resource of cell base station feedback community user has expired information, community user is attempted proposing access request and while send feedback information from this cell base station to relay station to the relay station of this residential quarter and peripheral non-Along Railway residential quarter adjoiner, and relay station receives that the backward abutting subdistrict of the feedback information of access request and base station base station applies in short-term Radio Resource.
As the further improvement of said method, in the described running number registration step, train is when being about to dispatch a car, and the train mobile management device sends the request of registration running number to network side; The affirmation message that network side will succeed in registration turns back to the train mobile management device, if do not receive acknowledge message in a specified time, then mobile management device continues to send registration request, until receive the network side confirmation.
As the further improvement of said method, described train mobile management device is integrated comprises the train travelling carriage of GPS, transceiver and information collection apparatus.
As the further improvement of said method, train driving relevant information comprises in described (3): comprise train running speed, train position, apart from next residential quarter distance, train number stop over information and the amount of radio resources that obtains of the first two Along Railway cellular cell train etc.
As the further improvement of said method, described base station is reserved in the resource step, and the priority that proposes user on the train will be higher than community user.
The problem of the resource anxiety that effective cellular cell that solves Along Railway causes owing to train crosses.
Description of drawings
Fig. 1 is the wireless channel distribution method based on train cellular cell along the line;
Fig. 2 is in the embodiment of the invention, along the railway the system model schematic diagram of cellular cell;
Fig. 3 is in the embodiment of the invention, along the railway the flow chart of cellular cell model lower channel distribution.
Embodiment
The present invention is further described below in conjunction with description of drawings and embodiment.
Among the present invention, based on the running number of train, utilized the cell type that covers on the train operation route to be the wire residential quarter, thereby travel direction has these characteristics of stationarity, and combine the radio channel allocation that running number carries out foreseeability.Particularly, owing to the route of each train number train walking is fixed, so according to running number, can be stored in each train number in the network controls scope on the way cell list of process in the network side data storehouse.When certain train is about to set out, need in network, carry out the running number registration, network side just can be known the residential quarter that this train will pass through on the way according to the running number of this train.
As shown in Figure 1, a kind of wireless channel distribution method based on train cellular cell along the line comprises the steps:
(1) running number registration step S1, the mobile management device on the train send the request of registration running number to network side, network side obtains train number number;
(2) cell list establishment step S2 along the line, described network side is according to described train number number and pre-stored cell data along the line, establishment train operation cell list and numbering along the line;
(3) predict at hand step S3 of train number, mobile management device on the train periodically sends the train driving relevant information to network side in the process of moving, by relevant information is processed, draw the time that next residential quarter needs that arrives, when this time during less than the time gate limit value of a certain setting, network side sends message to next cell base station, notifying it to prepare the channel reservation resource is railer's service on the horizon, pass through simultaneously the Information Statistics of obtaining the first two Along Railway cellular cell the reservation stock number and feed back to next residential quarter, notify it to reserve rational channel resource, avoid waste;
(4) resource step S4 is reserved in the base station, next cell base station is according to the relevant information of described train cycle renewal and pre-stored cell data along the line, reclaim Radio Resource in the residential quarter, be reserved as this train travelling carriage service is provided, wherein, the feedback of the obligate information of the first two Along Railway cellular cell of passing through of the amount of radio resources of reservation is determined;
(5) Radio Resource step S5 is regained in the base station, after train sailed out of this residential quarter certain hour, this cell base station was recovered as the Radio Resource that train is reserved, for this community user provides normal communication service, simultaneously, the resource of lending is reclaimed in the abutting subdistrict base station by the overlay region relay station;
(6) running number is nullified step S6, after train arrival, carries out the cancellation of running number, and network side resource allocation methods new after train number's number cancellation is no longer applicable.
As the further improvement of said method, further comprising the steps of:
(1) community user is attempted the access step, and the user has communication requirement in the residential quarter that train is about to pass through, and sends access request information to this cell base station;
(2) the channel step of abutting subdistrict, because channel is recovered as the user's service on the train, this this cell channel resource of cell base station feedback community user has expired information, community user is attempted proposing access request and while send feedback information from this cell base station to relay station to the relay station of this residential quarter and peripheral non-Along Railway residential quarter adjoiner, and relay station receives that the backward abutting subdistrict of the feedback information of access request and base station base station applies in short-term Radio Resource.
As the further improvement of said method, in the described running number registration step, train is when being about to dispatch a car, and the train mobile management device sends the request of registration running number to network side; The affirmation message that network side will succeed in registration turns back to the train mobile management device, if do not receive acknowledge message in a specified time, then mobile management device continues to send registration request, until receive the network side confirmation.
As the further improvement of said method, described train mobile management device is integrated comprises the train travelling carriage of GPS, transceiver and information collection apparatus.
As the further improvement of said method, train driving relevant information comprises in described (3): comprise train running speed, train position, apart from next residential quarter distance, train number stop over information and the amount of radio resources that obtains of the first two Along Railway cellular cell train etc.
As the further improvement of said method, described base station is reserved in the resource step, and the priority that proposes user on the train will be higher than community user.
Below, take T9 train as example, 1,2,3 the along the railway cardinal principle flow process of the radio channel allocation of cellular cell is described by reference to the accompanying drawings.
With reference to Fig. 1,2 and 3.
Before 1T9 train of step set out, the train travelling carriage was finished the registration of running number.
Step 2 network side establishment train operation cell list along the line.Suppose on the way through 26 residential quarters these 26 residential quarters to be numbered, when the train travelling carriage in the residential quarter 1 when setting up communication, network side waits information to issue the base station of residential quarter 2 on train according to establishment train operation cell list along the line at hand.
T9 train of step 3 hypothesis 23 moves to the residential quarter from the residential quarter, mobile management device on the train periodically sends the train driving relevant information to network side in the process of moving, comprise train running speed, train position, apart from next residential quarter distance, train number stop over information and the amount of radio resources that obtains of the first two Along Railway cellular cell train etc.It is calculated that processing by logarithm, draw the time that residential quarter 3 needs that arrives.When this time during less than the time gate limit value of a certain setting, 3 base stations send message to network side to the residential quarter, and notifying it to prepare channel reservation resource is that passenger on T9 the train on the horizon serves.The amount of information of passing through simultaneously to obtain is added up the reservation stock number of residential quarter 1 and residential quarter 2 and is fed back to residential quarter 3, notifies it to reserve rational channel resource.Described network side reclaims Radio Resource in the residential quarter according to the relevant information of described train cycle renewal and pre-stored cell data along the line, is reserved as this train travelling carriage service is provided.Wherein, the amount of radio resources of reservation is determined by the feedback of residential quarter 1 and residential quarter 2 obligate informations.Residential quarter 3 interior users 6 have communication requirement, and 3 base stations send access request information to the residential quarter; Because channel is recovered as the service of train travelling carriage, residential quarter 3 base station feedback have expired information for this community user channel resource, and residential quarter 3 users attempt proposing access request also sends this cell base station simultaneously to relay station 5 feedback information to the relay station 5 of this residential quarter and non-Along Railway cellular cell adjoiner.Relay station 5 receives that the abutting subdistrict base station 4 of the backward non-Along Railway of feedback information of access request and base station applies in short-term Radio Resource, for train residential quarter along the line provides temporary communication service.After train sailed out of residential quarter 3 certain hours, 3 base stations, residential quarter were recovered as the Radio Resource that train is reserved, for this community user provides normal communication service.Simultaneously, the resource of lending is reclaimed by overlay region relay station 5 in non-Along Railway abutting subdistrict base station 4.
Above a kind of novel radio method for channel allocation based on train cellular cell along the line provided by the present invention is described in detail, used specific embodiment herein principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications.In sum, this description should not be construed as limitation of the present invention.
Claims (6)
1. the wireless channel distribution method based on train cellular cell along the line is characterized in that, comprises the steps:
(1) running number registration step, the mobile management device on the train send the request of registration running number to network side, network side obtains train number number;
(2) cell list establishment step along the line, described network side is according to described train number number and pre-stored cell data along the line, establishment train operation cell list and numbering along the line;
(3) predict at hand step of train number, mobile management device on the train periodically sends the train driving relevant information to network side in the process of moving, by relevant information is processed, draw the time that next residential quarter needs that arrives, when this time during less than the time gate limit value of a certain setting, network side sends message to next cell base station, notifying it to prepare the channel reservation resource is railer's service on the horizon, pass through simultaneously the Information Statistics of obtaining the first two Along Railway cellular cell the reservation stock number and feed back to next residential quarter, notify it to reserve rational channel resource, avoid waste;
(4) the resource step is reserved in the base station, next cell base station is according to the relevant information of described train cycle renewal and pre-stored cell data along the line, reclaim Radio Resource in the residential quarter, be reserved as this train travelling carriage service is provided, wherein, the feedback of the obligate information of the first two Along Railway cellular cell of passing through of the amount of radio resources of reservation is determined;
(5) the Radio Resource step is regained in the base station, after train sailed out of this residential quarter certain hour, this cell base station was recovered as the Radio Resource that train is reserved, for this community user provides normal communication service, simultaneously, the resource of lending is reclaimed in the abutting subdistrict base station by the overlay region relay station;
(6) running number is nullified step, after train arrival, carries out the cancellation of running number, and network side resource allocation methods new after train number's number cancellation is no longer applicable.
2. a kind of wireless channel distribution method based on train cellular cell along the line according to claim 1 is characterized in that: further comprising the steps of:
(1) community user is attempted the access step, and the user has communication requirement in the residential quarter that train is about to pass through, and sends access request information to this cell base station;
(2) the channel step of abutting subdistrict, because channel is recovered as the user's service on the train, this this cell channel resource of cell base station feedback community user has expired information, community user is attempted proposing access request and while send feedback information from this cell base station to relay station to the relay station of this residential quarter and peripheral non-Along Railway residential quarter adjoiner, and relay station receives that the backward abutting subdistrict of the feedback information of access request and base station base station applies in short-term Radio Resource.
3. a kind of wireless channel distribution method based on train cellular cell along the line according to claim 1, it is characterized in that: in the described running number registration step, train is when being about to dispatch a car, and the train mobile management device sends the request of registration running number to network side; The affirmation message that network side will succeed in registration turns back to the train mobile management device, if do not receive acknowledge message in a specified time, then mobile management device continues to send registration request, until receive the network side confirmation.
4. a kind of wireless channel distribution method based on train cellular cell along the line according to claim 1 is characterized in that: described train mobile management device is integrated comprises the train travelling carriage of GPS, transceiver and information collection apparatus.
5. a kind of wireless channel distribution method based on train cellular cell along the line according to claim 1 is characterized in that: train driving relevant information comprises in described (3): comprise train running speed, train position, apart from next residential quarter distance, train number stop over information and the amount of radio resources that obtains of the first two Along Railway cellular cell train.
6. a kind of wireless channel distribution method based on train cellular cell along the line according to claim 1 is characterized in that: described base station is reserved in the resource step, and the priority that proposes user on the train will be higher than community user.
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| CN 201110300193 CN102300319B (en) | 2011-09-30 | 2011-09-30 | Method for distributing wireless channels based on cells along railway |
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| CN 201110300193 CN102300319B (en) | 2011-09-30 | 2011-09-30 | Method for distributing wireless channels based on cells along railway |
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| CN103248640A (en) * | 2012-02-06 | 2013-08-14 | 电信科学技术研究院 | Data and source mapping table sending method and device for vehicle ad-hoc network |
| CN103313407B (en) * | 2012-03-08 | 2016-03-02 | 中国移动通信集团公司 | A kind of distribution method of time frequency resources of high-speed railway private network and device |
| CN103313314B (en) * | 2012-03-09 | 2015-12-16 | 鼎桥通信技术有限公司 | The recognition methods of high-speed rail cell type |
| US9294979B2 (en) | 2012-04-17 | 2016-03-22 | Telefonaktiebolaget L M Ericsson (Publ) | Interference suppression in a wireless communication network |
| CN103582091B (en) * | 2012-08-07 | 2018-05-11 | 中国移动通信集团公司 | The method and device that base station energy-saving is run in a kind of high ferro private network |
| CN103687020B (en) * | 2012-09-26 | 2018-03-27 | 焦克莹 | The assigning method and device of channel |
| CN103916947B (en) * | 2013-01-04 | 2018-01-30 | 中国移动通信集团公司 | A kind of operation method and device of public network base station |
| CN104346670A (en) * | 2013-07-31 | 2015-02-11 | 上海杰之能信息科技有限公司 | Resource object allocation method and device |
| CN104581776B (en) * | 2013-10-24 | 2018-06-01 | 中国电信股份有限公司 | Mobile relay and its system and the method for adjacent area self-optimizing |
| CN103813403B (en) * | 2013-11-25 | 2017-04-19 | 北京交通大学 | Broadcast-based LTE-R (long term evolution-release) synchronous control communication system and switching method thereof |
| CN105491616B (en) * | 2014-09-16 | 2018-11-23 | 中国移动通信集团江苏有限公司 | A kind of combination network dispatching method and equipment |
| US20170272931A1 (en) * | 2015-10-01 | 2017-09-21 | Telefonaktiebolaget Lm Ericsson (Publ) | Controlling Operation of a Radio Network Serving a Transport System |
| CN105791418B (en) * | 2016-04-13 | 2019-09-24 | 北京新联铁集团股份有限公司 | The vehicles, infrastructure network control method and equipment and system |
| CN109922483B (en) * | 2017-12-12 | 2020-12-15 | 华为技术有限公司 | Method for adjusting wireless resources and related equipment |
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