CN101257709B - Mobile communication system and method of high channel resource use ratio - Google Patents
Mobile communication system and method of high channel resource use ratio Download PDFInfo
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- CN101257709B CN101257709B CN2007101755329A CN200710175532A CN101257709B CN 101257709 B CN101257709 B CN 101257709B CN 2007101755329 A CN2007101755329 A CN 2007101755329A CN 200710175532 A CN200710175532 A CN 200710175532A CN 101257709 B CN101257709 B CN 101257709B
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Abstract
The invention relates to a mobile communication system and a method of high channel resources utilization. A common control channel is sent by a mobile station and received by a base station. When preparing for initiating a call, the mobile station looks for surrounding base stations covering the mobile station actively by using a common uplink access channel, surrounding base stations covering the mobile station receive an inquiry message of the mobile terminal, and responses the mobile terminal, the mobile terminal selects base stations to be accessed according to the response information. When the mobile terminal is called, a paging base station is in charge of paging called mobile stations, when receiving a paging message thereof, the called mobile stations enter an access process, selects a base station for connecting during the access process, reports the position thereof after accessed, prepares for communicating with the calling subscriber. The invention can give full play to efficiency of the mobile communication system, can satisfy explode need of mobile service farthest, and satisfy need of various types of mobile services farthest.
Description
Technical field
The present invention relates to a kind of mobile communication system and method, relate in particular to a kind of mobile communication system and method for high channel utilance.
Background technology
Existing mobile communications system is the cellular cell system, be characterized in not overlapping, cover the coverage continuously with cellular cell, the coverage of a base station is called a cellular cell, in order to reduce the base station site quantity of using in the overlay area as far as possible, is nonoverlapping between the honeycomb.When the user when a cellular cell moves to adjacent cellular cell, for guarantee to converse continuously, will switch.In existing mobile communications system, four class channels are arranged: forward traffic channel, reverse traffic channel, forward control channel and reverse control channel.Wherein forward control channel comprises the beacon channel always launched or pilot channel, synchronously or frequency correction channel, Common Control Channel etc.Coverage as the forward control channel of beacon channel is exactly the coverage of cellular cell.The coverage of other channels also all is consistent with the coverage of beacon channel.
When a mobile platform started, it at first scans the forward control channel that receives, and determines the access website that ambient signals is the strongest, resides in this cellular cell, and is monitoring this signal always, is attenuated to below the handoff threshold up to it.At this moment travelling carriage scans the forward control channel that all receive again, selects the strongest access website cellular cell of another signal resident.Travelling carriage is initiated talk business at the strongest resident cellular cell of received signal.In general, forward control channel accounts for more than 10% of total number of channels, and shared power resource or time interval resource account for about 20% of total resources.
In order to satisfy the demand of covering and capacity simultaneously, the transmitting power of base station does not generally reach maximum transmission power.
Travelling carriage is scanning always the forward control channel by base station always when idle condition.When needs and a travelling carriage conversation, the forward channel broadcasting of each cellular cell in the whole system scope is to the beep-page message of this travelling carriage.Travelling carriage is responded beep-page message by the reverse control channel of persistent district.Then, under the control of system, user and system deflection service channel are simultaneously conversed.In communication process, the transmitting power of travelling carriage and base station according to the result of calculation of power control algorithm along with channel situation and professional needs change.When the user moved to other sub-districts, according to the monitoring result of travelling carriage, system's indication travelling carriage switched.
Existing mobile communications system has following shortcoming:
1, because down control channel (beacon channel and synchronizing channel etc.) takies resource greatly, limited downlink transmission data rate.In present mobile communication business, data service occupies more and more important position, data service has asymmetric characteristics, particularly downstream data rate generally will be higher than upstream data rate, therefore, existing mobile communications system can not farthest satisfy the demand of data communication and multimedia communication.
2, the base station occupies a cellular zone separately, and resource can not be shared between standing, and only in the soft switching process of cdma system, could realize macro diversity; Disturb for fear of between the station, cause idle, the waste of base station power resource.
3, owing to moving to other sub-districts, travelling carriage will switch, that is to say, on the route that the user moves, through how many cellular cells, will carry out how many times and switch, no matter and whether signal quality drops to and needs the degree switched, so just caused and switched too much, and the generation of switching needs occupying system resources on the one hand, has reduced system effectiveness, on the other hand, cause call drop during switching easily, too much switching has caused the reduction of quality of service.
4, travelling carriage will will oneself be synchronized on the clock of system according to the indication of frequency correction channel or synchronizing channel, and synchronizing process is slow, and the phenomenon of step-out takes place easily, thereby hides some dangers for for the system works quality.
Therefore, need to propose a kind of new system pattern, overcome above-mentioned shortcoming, for giving full play to the usefulness of mobile communication system, satisfy the needs of mobile communication business rapid growth to greatest extent, farthest satisfy the needs of diversified mobile communication business kind.
The objective of the invention is to propose a kind of mobile communication system of high channel resource utilization, particularly utilize resources such as descending power, time slot, sign indicating number, channel more efficiently, this system does not limit the overlapping of cellular cell, allows travelling carriage bear greater functionality, thereby overcomes above-mentioned shortcoming.
Summary of the invention
The object of the present invention is to provide a kind of mobile communication system of high channel resource utilization, it comprises:
Travelling carriage also is subscriber equipment, comprises making a call and two kinds of uses of quilt calling situations.When Mobile Origination is called out, at first cover its base station by system's common uplink access channel inquiry, after receiving response message, the answer signal signal to noise ratio that receives is ranked, allow under the situation of user's access at the base station load, the base station of selected signal to noise ratio maximum is inserted, and this process is called access procedure.When mobile terminated the time, by paging base station travelling carriage is carried out paging, when travelling carriage is received the beep-page message of oneself, enter access procedure, in access procedure, the selected base station that connects, after the access,, be ready to converse with the calling subscriber to the position of System Reports oneself;
The base station is connected with core net by base station controller, and function is to receive the information of travelling carriage in the overlay area and send information to travelling carriage.Its overlay area can be overlapping.When receiving the access apply for information of travelling carriage, show that this travelling carriage is in the overlay area of oneself, replys travelling carriage at the common uplink access channel.Response message comprises the identity code and the load condition of base station;
Paging base station links to each other with core net by base station controller, on paging channel travelling carriage is not carried out paging when knowing the particular location of called mobile station in system.When system need be to intrasystem travelling carriage broadcast message, paging base station was born the work that sends broadcast message to travelling carriage.
Above-mentioned mobile communication system, it is characterized in that, when travelling carriage moves, base station and travelling carriage are according to the transmitting power of oneself and the ability of receiving sensitivity, keep conversation does not switch as far as possible, when their resource capability is not enough to keep conversation, switch again, and unnecessary all base station area in process are all switched.
Above-mentioned mobile communication system is characterized in that, paging base station is only supported the paging channel of low rate, and paging base station does not need to handle up channel simultaneously, and paging base station provides bigger transmitting power in addition, covers big geographic range.
Above-mentioned mobile communication system, paging base station also can be used for system-wide broadcasting.
Above-mentioned mobile communication system, when needs travelling carriage and system synchronization, system is synchronous by virtual lock unit and travelling carriage, and maintenance and travelling carriage is synchronous.
The present invention also aims to provide a kind of method of high channel resource utilization, it may further comprise the steps:
When Mobile Origination is called out, may further comprise the steps:
(1) travelling carriage sends inquiry message to a plurality of base stations that cover it;
(2) receive that the base station of travelling carriage inquiry message is all to travelling carriage echo reply information;
(3) travelling carriage is lined up according to signal quality to the response message of receiving, and selects top-quality base station to insert;
(4) set up signaling link;
(5) set up service link;
(6) transmit traffic data;
(7) remove service link;
(8) remove signaling link;
(10) finish conversation.
Mobile terminated the time, may further comprise the steps:
(1) paging base station sends paging information;
Send inquiry messages to a plurality of base stations that cover it when (2) called mobile station is received oneself paging information;
(3) receive that the base station of apply for information is to travelling carriage echo reply information;
(4) travelling carriage is lined up according to signal quality to the response message of receiving, and selects top-quality base station;
(5) set up signaling link;
(6) set up service link;
(7) transmit traffic data;
(8) remove service link;
(9) remove signaling link;
(10) finish conversation.
Said method is characterized in that Common Control Channel is provided by travelling carriage, is promptly sent by travelling carriage, and the base station receives.
Said method is characterized in that, the pond, base station is formed in the base station, carries out sharing of base station resource, utilizes a plurality of antenna mutual group at many stylobates station to become antenna array, is equivalent to utilize bigger MIMO battle array, transmits higher data rate.
The mobile communication system of high channel resource utilization and the advantage of method are, there is not down control channel such as pilot transmitted and broadcast channel always, when the travelling carriage Request System is served, system inserts website accordingly can utilize smart antenna emission pilot tone and system information, reduce system interference, improved system effectiveness.Travelling carriage need not all switch through all cellular cells when mobile, reduces the number of times that switches.Break the restriction of honeycomb, the base station can make full use of the power resource of oneself.Also reduced restriction to base station selection.Travelling carriage can select the base station of resource affluence to insert, and reduces potential switching times on the one hand, reduces the idle amount of base station resource, improves resource utilization.Balance sysmte is loaded on the other hand.The pond, base station is formed in the base station, carry out sharing of base station resource, utilize a plurality of antenna mutual group at many stylobates station to become antenna array, be equivalent to utilize bigger MIMO battle array, that is, travelling carriage can also be communicated by letter with a plurality of base stations simultaneously simultaneously, utilizes diversity technique or MIMO technology, improve traffic rate, thereby improve power system capacity.
The present invention can give full play to the usefulness of mobile communication system, satisfies the needs of mobile communication business rapid growth to greatest extent, farthest satisfies the needs of diversified mobile communication business kind.
Description of drawings
Fig. 1 is according to arrangement of base stations schematic diagram of the present invention;
Fig. 2 arranges schematic diagram according to paging function of the present invention;
Fig. 3 is the schematic diagram according to mobile travelling carriage handover procedure of the present invention;
Fig. 4 is according to base station functions block diagram of the present invention;
Fig. 5 is according to mobile communication system Organization Chart of the present invention;
Fig. 6 is the sequential chart that mobile phone makes a call in system of the present invention;
Fig. 7 is the sequential chart of paging in system of the present invention.
Embodiment
Below in conjunction with accompanying drawing system and method for the present invention is elaborated.
Arrangement of base stations schematic diagram of the present invention as shown in Figure 1, elliptical region is represented a base station area, the base station is positioned at the central point of base station area.Base station area can be overlapping.When travelling carriage was found oneself to be positioned at the overlapping region of a plurality of base station area by the inquiry process, it can be according to the power base station that selection is got in touch with load of each base station feedback signal.Base station in the present invention, its physical structure is the same with traditional base station, comprises radio frequency analog part, baseband portion and base stations control part, and the base station among the present invention is applicable to existing all multiple access technique and duplex technologies.Mobile communication system of the present invention does not limit the layout of base station, and its resource capability can be given full play in the base station, and the distribution density of base station depends on the density of telephone traffic fully.When Mobile Origination is called out, it at first covers its base station by system's common uplink access channel inquiry, it may be in the common coverage of a plurality of base stations, on every side each receives the base station of travelling carriage inquiry message and all it replied, and response message comprises the identity code and the load condition of base station.After travelling carriage is received these response messages, the answer signal signal to noise ratio that receives is ranked, allow under the situation of user's access at the base station load, the base station of selected signal to noise ratio maximum is inserted.
The schematic diagram of mobile paging station of the present invention as shown in Figure 2, paging is to need and the called mobile station conversation in system, when not knowing the particular location of called mobile station again, a kind of means of searching travelling carriage in system.Paging to travelling carriage is carried out by the paging website of wide covering.Paging channel is descending Common Control Channel.After travelling carriage receives paging information to oneself, utilize access procedure to select the base station and the connecting system of contact.As shown in Figure 2, when travelling carriage is called, the wide paging website mobile paging station that covers of system's utilization, the paging website is a base station, is the same with the annexation of system with other ordinary base station, and its supports the paging channel of low rate, and ordinary base station is not generally supported the paging trade, according to Shannon's theorems, the paging channel of low rate can cover bigger scope.Travelling carriage is received the beep-page message to oneself, enters access procedure, and in access procedure, the selected base station that connects after the access, reports in, and is ready to converse with the calling subscriber.The paging website also can be used for system-wide broadcasting.If short message broadcasting, utilize the paging website just can finish, if the message of broadcasting is longer, the user in the paging website reporting system is connecting system separately, the method of subscriber access system is the same with called subscriber's access, by the base station reception broadcast of each self join.
The schematic diagram of travelling carriage handover procedure of the present invention as shown in Figure 3.The sub-district that the back connects is represented to switch in the sub-district that connects before empty double-head arrow is represented to switch, real double-head arrow, and as can be seen from Figure 3, the mobile subscriber is not switched through middle sub-district the time.The coverage of base station is by the decision of the coverage of Common Control Channel, and the coverage of Traffic Channel is distributed to the transmitting power and the receiving sensitivity of Traffic Channel and is determined, therefore when travelling carriage moved to the sub-district, centre, it can also keep the connection with sub-district, the left side.As shown in Figure 3, when the mobile subscriber moved, base station and travelling carriage can be kept conversation as far as possible and not switch according to the transmitting power of oneself and the ability of receiving sensitivity.When their resource capability is not enough to keep conversation, switch again, and all switch unnecessary all sub-districts in process.Can make full use of the ability of base station like this, on the other hand, reduce the number of times that switches, thereby saved system resource, increase power system capacity.
Figure 4 shows that according to base station functions block diagram of the present invention base station in the present invention comprises ordinary base station and paging base station 2 classes.Their function is identical, as shown in Figure 4.Antenna is outer joining, and adapt to the technical indicators such as working frequency range of base station.Duplexer is used for the up-downgoing radiofrequency signal is distinguished, and low noise amplifier is used to amplify the wireless signal that receives, and down-conversion changes to base band with radiofrequency signal, carries out demodulation simultaneously.The A/D conversion becomes analog signal into digital signal.Power amplifier is amplified to the power that needs to the low-power radio frequency signal of output, and up-conversion is exporting the rf frequency that baseband signal changes to emission, and the D/A conversion becomes analog signal to the digital signal of output.The function of modulation is the planisphere that forms signal.The upward signal distribution is that the baseband signal that multichannel is exported is assigned to corresponding baseband processing unit.It mainly is to carry out matched filtering, decision process that upward signal is handled, and baseband channel decoding is handled the decoding that comprises check codes such as channel code and CRC and handled.It mainly is to strengthen the balance of downstream signal and the processing of antijamming capability that downstream signal is handled, and the downstream signal Path selection is the baseband signal of output to be delivered to corresponding transmitter unit handle.The baseband channel encoding process mainly is that output signal is carried out chnnel coding and added function such as CRC check.Base-station interface is responsible for being connected of base station and base station controller.
Paging base station is only supported the paging channel of low rate, adapts to the signal processing of low rate, and paging base station does not need to handle up channel simultaneously, and paging base station provides bigger transmitting power in addition, covers vast geographic range.
Ordinary base station is supported uplink and downlink channels all except that paging channel.
Paging base station can be undertaken by ordinary base station.
Be illustrated in figure 5 as according to mobile communication system Organization Chart of the present invention.As can be seen from Figure 5, whole system comprises compositions such as mobile phone (being called travelling carriage, portable terminal, subscriber equipment etc. again), base station, base station controller, core net and external network.Its annexation as shown in Figure 5.Paging base station carries out paging to all travelling carriages.Ordinary base station support all channels except that paging channel.Paging base station utilizes higher decorating position, bigger transmitting power and lower data message speed, can cover vast geographic range.Other communication functions of portable terminal all and between ordinary base station carry out.Paging base station and ordinary base station all are connected to base station controller, accept the control and the management of base station controller.Base station controller is connected on the core net, and core net is connected with various external networks.
Fig. 6 is the sequential chart that mobile phone makes a call in system of the present invention.According to shown in Figure 6, when Mobile Origination is called out to the base station 1 that covers it, 2,3 send inquiry message, base station 1,2,3 echo reply information, travelling carriage is lined up according to signal quality (such as signal to noise ratio) to the response message of receiving, and select top-quality base station 1, travelling carriage sends control link connection request to base station 1, base station 1 is controlled link with travelling carriage and is connected, travelling carriage sends the carrying connection request to base station 1, base station 1 is carried with travelling carriage and is connected, business data transmission is carried out in travelling carriage and base station 1 subsequently, and releasing bearing connects and the connection of control link during end of calling.
Fig. 7 is the sequential chart of paging in system of the present invention.According to shown in Figure 7, paging base station sends paging information, when travelling carriage is received the paging information of oneself to the base station 1 that covers it, 2,3 send inquiry message, base station 1,2,3 echo reply information, travelling carriage is lined up according to signal quality to the response message of receiving, and select top-quality base station 1, travelling carriage sends control link connection request to base station 1, base station 1 is controlled link with travelling carriage and is connected, travelling carriage sends the carrying connection request to base station 1, base station 1 is carried with travelling carriage and is connected, and business data transmission is carried out in travelling carriage and base station 1 subsequently, and releasing bearing connects and the control link connects during end of calling.
The mobile communication system principle of high channel resource utilization:
Legacy system has the broadcasting of beacon channel or pilot frequency channel information and system information always, and travelling carriage and system are provided synchronously or the frequency calibration channel by system synchronously, and travelling carriage is carried out and maintain synchronization.
In high channel resource utilization mobile communication system, when having only the travelling carriage request, system just gives beacon, pilot tone and system information.
When needs travelling carriage and system synchronization, system is synchronous by virtual lock unit and travelling carriage, and maintenance and travelling carriage is synchronous.
In high channel resource utilization mobile communication system, when travelling carriage is served at needs, just initiatively pass through up access channel and seek base station on every side, and disturb perception, thereby avoid disturbing with system negotiates.
The GSM of high channel resource use ratio and the advantage of method:
The down control channels such as the pilot tone of always not launching and broadcast channel, when the travelling carriage Request System was served, system inserts website accordingly can utilize smart antenna emission pilot tone and system information, has reduced system interference, has improved system effectiveness. Travelling carriage need not all switch through all cellular cells when mobile, reduces the number of times that switches. Break the restriction of honeycomb, the base station can take full advantage of the power resource of oneself. Also reduced the restriction to base station selection. Travelling carriage can select the base station of resource affluence to insert, and reduces on the one hand potential switching times, reduces the idle amount of base station resource, improves resource utilization. Balance sysmte is loaded on the other hand. The base station forms the pond, base station, carry out sharing of base station resource, utilize a plurality of antennas at many stylobates station jointly to form antenna array, be equivalent to utilize bigger MIMO battle array, that is, travelling carriage can also be communicated by letter with a plurality of base stations simultaneously simultaneously, utilizes diversity technique or MIMO technology, improve traffic rate, thereby improve power system capacity.
Should be noted that all any Innovative methods that does not break away from inventive concept all belong to protection scope of the present invention, the concrete protection domain of the present invention is defined by the claims.
Claims (9)
1. the mobile communication system of a high channel resource utilization is characterized in that comprising:
Travelling carriage also is subscriber equipment, comprises making a call and two kinds of uses of quilt calling situations; When Mobile Origination is called out, at first cover its base station by system's common uplink access channel inquiry, after receiving the response message of these base stations, the answer signal signal to noise ratio that receives is ranked, allow under the situation of user's access at the base station load, the base station of selected signal to noise ratio maximum is inserted, and this process is called access procedure; When mobile terminated the time, by paging base station travelling carriage is carried out paging, when travelling carriage is received the beep-page message of oneself, enter access procedure, in access procedure, the selected base station that connects, after the access,, be ready to converse with the calling subscriber to the position of System Reports oneself;
The base station, be connected with core net by base station controller, function is to receive the information of travelling carriage in the overlay area and send information to travelling carriage, its overlay area can be overlapping, when receiving the access apply for information of travelling carriage at the common uplink access channel, show that this travelling carriage is in the overlay area of oneself, travelling carriage replied that response message comprises the identity code and the load condition of base station;
Paging base station, link to each other with core net by base station controller, on paging channel travelling carriage is not carried out paging when the particular location of called mobile station is known by system, when system need be to intrasystem travelling carriage broadcast message, paging base station was born the work that sends broadcast message to travelling carriage.
2. system according to claim 1, it is characterized in that: when travelling carriage moves, base station and travelling carriage are according to the transmitting power of oneself and the ability of receiving sensitivity, keep conversation does not switch as far as possible, when their resource capability is not enough to keep conversation, switch again, and unnecessary all base station area in process are all switched.
3. system according to claim 1 and 2 is characterized in that: paging base station is only supported the paging channel of low rate, and paging base station does not need to handle up channel simultaneously, and paging base station provides bigger transmitting power in addition, covers big geographic range.
4. system according to claim 3, paging base station is used for system-wide broadcasting.
5. system according to claim 1, when needs travelling carriage and system synchronization, system is synchronous by virtual lock unit and travelling carriage, and maintenance and travelling carriage is synchronous.
6. the method for a high channel resource utilization is characterized in that, may further comprise the steps when Mobile Origination is called out:
(1) travelling carriage sends inquiry message to a plurality of base stations that cover it;
(2) receive that the base station of travelling carriage inquiry message is all to travelling carriage echo reply information;
(3) travelling carriage is lined up according to signal quality to the response message of receiving, and selects top-quality base station to insert;
(4) set up signaling link;
(5) set up service link;
(6) transmit traffic data;
(7) remove service link;
(8) remove signaling link;
(10) finish conversation.
7. the method for a high channel resource utilization is characterized in that, mobile terminated the time may further comprise the steps:
(1) paging base station sends paging information;
Send inquiry messages to a plurality of base stations that cover it when (2) called mobile station is received oneself paging information;
(3) receive that the base station of inquiry message is to travelling carriage echo reply information;
(3) travelling carriage is lined up according to signal quality to the response message of receiving, and selects top-quality base station;
(4) set up signaling link;
(5) set up service link;
(6) transmit traffic data;
(7) remove service link;
(8) remove signaling link;
(10) finish conversation.
8. according to claim 6 or 7 described methods, it is characterized in that: Common Control Channel is provided by travelling carriage, is promptly sent by travelling carriage, and the base station receives.
9. method according to claim 8 is characterized in that: the pond, base station is formed in the base station, carries out sharing of base station resource, utilizes a plurality of antenna mutual group at many stylobates station to become antenna array, is equivalent to utilize bigger MIMO battle array, transmits higher data rate.
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| CN102065514B (en) * | 2009-11-17 | 2013-07-10 | 普天信息技术研究院有限公司 | Consumer terminal access method, system and device in high level long-term evolutionary progression system |
| CN102724721B (en) * | 2012-06-28 | 2015-09-09 | 华为技术有限公司 | The method of cell merge and base station |
| CN104219764B (en) * | 2013-05-31 | 2018-05-11 | 华为技术有限公司 | Paging method, equipment and system |
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| CN1701621A (en) * | 2003-04-30 | 2005-11-23 | 三星电子株式会社 | Method for measuring and reporting channel quality in broadband wireless access communication system |
| CN1714594A (en) * | 2003-01-09 | 2005-12-28 | 诺基亚公司 | Access Point Selection in Wireless Communication System |
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| CN1714594A (en) * | 2003-01-09 | 2005-12-28 | 诺基亚公司 | Access Point Selection in Wireless Communication System |
| CN1701621A (en) * | 2003-04-30 | 2005-11-23 | 三星电子株式会社 | Method for measuring and reporting channel quality in broadband wireless access communication system |
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