CN100486354C - Method for service allocation in layered network - Google Patents
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- CN100486354C CN100486354C CNB2005101059982A CN200510105998A CN100486354C CN 100486354 C CN100486354 C CN 100486354C CN B2005101059982 A CNB2005101059982 A CN B2005101059982A CN 200510105998 A CN200510105998 A CN 200510105998A CN 100486354 C CN100486354 C CN 100486354C
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Abstract
This invention relates to a method for distributing services in a hierarchical network including: distributing low speed service to a macro-area in large cover sphere and small volume by the kind of the area and the kind of the service applied by the user so as to eliminate the interference to the users in the micro-areas by the low speed service, distributing the high speed data service to the micro-areas in small cover conditions and better channel conditions to provide high quality data transmission for the high speed data service.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of method of in Hierarchical Network, carrying out traffic assignments.
Background technology
Use the initial stage in mobile communication system, because telephone traffic is little, often a sub-district covers bigger zone.Increasing along with the user, system is difficult to satisfy growing telephone traffic demand, and the sub-district that tends to increase in some areas a different frequency this moment absorbs telephone traffic.The situation that a plurality of alien-frequency districts cover same area so just occurs, as shown in fig. 1, regional A and B have more telephone traffic in A, B, three zones of C, and they are covered by two sub-districts with different frequency (sub-district has disposed frequency f 1 and f2 respectively).
Continuation raising along with telephone traffic, need carry out further dilatation to system at the very many hot zones of telephone traffic, as set up layered cell structure (HCS), as shown in Figure 2, the cell splitting of one of them frequency is become a plurality of littler sub-districts, thereby in a zone, set up macrocell and Microcell that the overlay area varies in size, even more small picocell.Wherein the coverage of macrocell comprises the coverage of a plurality of Microcells, and a Microcell has covered a plurality of more small picocells again.Wherein macrocell has respectively distributed a different frequency with Microcell, in the scope that each macrocell covers, all has the Microcell of some varying numbers.
In the system of HCS hierarchy, macrocell is mainly used to satisfy on a large scale and covers continuously, and Microcell mainly provides capacity, coverings more among a small circle such as that picocell is used for realizing is indoor, escalator.Because macrocell coverage area is big, signal fadeout is big, so macrocell generally can only provide low speed business such as voice communication; Microcell generally all has direct path to reach the user because coverage is little, and signal fadeout is little, so Microcell generally can be supported the high-speed data transmission business.But, also need to take certain user's scheduling strategy to finish the reasonable distribution of different types of data transmission service between the different layers sub-district such as high, low speed in order to reach the optimization of systematic function.
The method for distributing business that prior art one related to the present invention adopts is:
When having a plurality of sub-districts to cover same area, the user initiates professional set up request and foundation communication in current resident sub-district, if the user initiates the sub-district, place of service request can not admit professional that the user asks because load is overweight the time, system just refuses this user's business and sets up request.
By the technical scheme of prior art one as can be seen: it directly sets up the business that the user asks in the user initiates to ask the current area at place, because the coverage of macrocell is bigger, number of users in the coverage is more, cell capacity is relatively limited, in the busier moment of traffic, because of high-speed data service occupies the capacity of macrocell more likely because off-capacity causes the professional failure of setting up.
Prior art two related to the present invention has adopted the method for carrying out traffic assignments based on user's scheduling strategy of user moving speed, its basic thought is: the user that system's high speed is moved is assigned in the macrocell with bigger covering, and most of user that low speed is moved is assigned in the Microcell that can improve power system capacity.Implementation step is as follows:
Step 1, the mobile subscriber that all and sub-district are communicated carry out moving speed estimation.
Step 3, judge whether that more high-rise sub-district is covered with sub-district current and that the user communicates, if having, then switches to more high-rise sub-district to this user.
By the technical scheme of prior art two as can be seen: by user's translational speed being estimated and being carried out user's scheduling according to mobile subscriber's translational speed, solve in the layered cell structure user frequent switching between Microcell and caused the too much problem of signaling, but do not consider in the layered cell structure high, the reasonable distribution of different types of data transmission service such as low speed between the different layers sub-district, therefore can exist the low speed business user in the Microcell to be caused the problem of interference, and can not guarantee the high-speed data transmission traffic assignments little to coverage, channel condition is Microcell relatively preferably, for high speed business provides the quality data that meets the demands transmission.
Summary of the invention
In view of above-mentioned existing in prior technology problem, the purpose of this invention is to provide a kind of method of in Hierarchical Network, carrying out traffic assignments, by this method, solved in the prior art two owing to the height that does not have according to data service, the low speed business of between the different layers sub-district of low speed kind in layered cell structure described business being carried out reasonable distribution and causing causes the problem of interference to user in the Microcell, and it is little to guarantee that at a high speed data service is assigned to coverage, channel condition is Microcell relatively preferably, and the problem of the quality data transmission that meets the demands is provided for high speed business; Solved simultaneously in the prior art one owing to directly when the user initiates to ask, set up the business of user's request in the persistent district at place, thereby the capacity that may occupy macrocell because of high-speed data service causes in the built-in problem that leads to the failure easily of being engaged in of setting up one's own business of macrocell.
The objective of the invention is to be achieved through the following technical solutions:
A kind of method of carrying out traffic assignments in Hierarchical Network provided by the invention comprises:
A, user send in the access sub-district and set up service request message to system, are carrying the identification information of professional type information and access sub-district in the described message;
B, system inquire about type information select target sub-district in Hierarchical Network of described access sub-district according to the traffic type information of user's request and according to the identification information of described access sub-district, and the business of being asked for this user's foundation by described Target cell.
Wherein, described step B specifically comprises:
B1, system obtain the type information that the user inserts the sub-district according to the identification information that inserts the sub-district from the information of the network planning;
B2, according to traffic type information select target sub-district in Hierarchical Network of described cell type information and described user request, and the business of being asked for this user's foundation by described Target cell.
Wherein, when system determined that type of service that the user asks is high-speed data service, described step B2 specifically comprised:
B21, system judge according to described cell type information whether the sub-district that the user inserts is Microcell, if, execution in step B22 then; Otherwise, execution in step B23;
B22, the business of being asked for this user's foundation in present access subzone finish this process then;
B23, system select target Microcell in lower floor's Microcell of current macrocell is set up the business of being asked for this user.
Wherein, described step B23 specifically comprises:
B231, system connect in current macrocell for this user, notify the user that lower floor's Microcell of current macrocell is measured by measuring control messages;
B232, described user measure the Microcell of described lower floor, and measurement result are reported system;
B233, system obtain the measurement result of this reporting of user, when confirming to have the target Microcell, then the business that the user asked are switched to described target Microcell.
Wherein, described step B233 specifically comprises:
B2331, system obtain the measurement result of this reporting of user;
B2332, when system determines that according to the measurement result obtained the pilot signal quality of the Microcell that measures is higher than the thresholding of setting, determine that then described Microcell satisfies the quality requirement that switches;
B2333, from the Microcell of the quality requirement that satisfy to switch, select the best Microcell of signal as Target cell;
B2334, the business that the user asked is switched to described target Microcell.
Wherein, when system determined that type of service that the user asks is low-speed data service, described step B2 specifically comprised:
B24, system judge according to described cell type information whether user's present access subzone is macrocell, if, execution in step B25 then; Otherwise, execution in step B26;
B25, the business of being asked for this user's foundation in present access subzone finish this process then;
B26, in the macrocell of the upper strata of current Microcell or cover select target macrocell in the macrocell of current Microcell, and the business that the user asked is switched to described target macro sub-district.
Wherein, described step B26 specifically comprises:
B261, system connect in current Microcell for the user, notify the user that the macrocell on upper strata is measured, and obtain the target macro sub-district according to measurement result and set up the business of being asked for this user, finish this process then;
Or,
B262, system get access to the macro cell message that covers current Microcell according to the information of the network planning, switch to described target macro sub-district then according to the macro cell message select target macrocell of the current Microcell of covering that gets access to, and with requested service.
Wherein, described step B261 specifically comprises:
B2611, system connect in current Microcell for this user, notify the user that the upper strata macrocell of current Microcell is measured by measuring control messages;
B2612, described user measure the macrocell on described upper strata, and measurement result are reported system;
B2613, system obtain the measurement result of this reporting of user, when confirming to have the target macro sub-district, then the business that the user asked are switched to described target macro sub-district.
Wherein, described step B2613 specifically comprises:
B26131, system obtain the measurement result of this reporting of user;
B26132, when system determines that according to the measurement result obtained the pilot signal quality of the macrocell that measures is higher than the thresholding of setting, determine that then described macrocell satisfies the quality requirement that switches;
B26133, from the macrocell of the quality requirement that satisfy to switch, select the best macrocell of signal as Target cell;
B26134, the business that the user asked is switched to described target macro sub-district.
Wherein, when system determined that type of service that the user asks is low-speed data service, described step B2 specifically comprised:
Selecting this access sub-district is Target cell, and sets up the business of being asked for this user by described Target cell.
As seen from the above technical solution provided by the invention, method of the present invention is in layered cell structure, by type in conjunction with the sub-district, and the user applies for professional type, low speed business (for example voice communication) is assigned to big, the less relatively macrocell of capacity of coverage, thereby eliminates the interference that the low speed business causes user in the Microcell; Simultaneously high-speed data service is assigned to that coverage is little, channel condition Microcell relatively preferably, for high-speed data service provides the quality data that meets the demands transmission, solved simultaneously in the prior art one owing to directly when the user initiates to ask, set up the business of user's request in the persistent district at place, thereby the capacity that may occupy macrocell because of high-speed data service causes in the built-in problem that leads to the failure easily of being engaged in of setting up one's own business of macrocell.
Description of drawings
Fig. 1 covers the schematic diagram of same area for a plurality of sub-districts of distributing different frequency;
Fig. 2 is the layered cell structure schematic diagram;
Fig. 3 is the flow chart of first embodiment of the invention;
Fig. 4 is the flow chart of second embodiment of the invention;
Fig. 5 is the flow chart of third embodiment of the invention.
Embodiment
Can know by the introduction in the background technology: in layered cell structure, the sub-district can be divided into macrocell and Microcell according to attribute informations such as the coverage of different layers sub-district and channel capacities.
A kind of core of carrying out the method for traffic assignments in Hierarchical Network provided by the present invention is: apply for professional type according to the type information of user's present access subzone and in conjunction with the user, select to be fit to the Target cell of type of service in macrocell in layered cell structure and the Microcell, and set up business for the user based on described Target cell, realize between the floored community reasonably traffic assignments.
First embodiment provided by the invention as shown in Figure 3, comprising:
Step S101, user send in the access sub-district and set up service request message to system, are carrying professional type information in the message, and the identification information that inserts the sub-district.
Step S102, system obtains the type information that the user inserts the sub-district according to the network planning information of identification information from be kept at system of described access sub-district.
Through after the above-mentioned steps, system just can be according to traffic type information select target sub-district in Hierarchical Network of described type information and described user request, and the business of being asked for this user's foundation by described Target cell.The specific implementation step is as follows:
Step S103, system judges according to the traffic type information of user's request whether the business of user's request is high speed business.
When system determines that type of service that the user asks is high-speed data service, carry out following steps:
Step S104, system judges according to described type information whether the sub-district that the user inserts is Microcell, if, execution in step S105 then; Otherwise, execution in step S106.
Step S105 for this user sets up the business of being asked, finishes this process then in the Microcell of current access.
Step S106, system select target Microcell in lower floor's Microcell of current macrocell finishes this process then for this user sets up the business of being asked.The specific implementation process comprises:
Step 1, system connects in current macrocell for this user, notifies the user that lower floor's Microcell of current macrocell is measured by measuring control messages.
Here, system notifies the user that the pilot signal of a plurality of Microcells that current macrocell covered is measured by measuring control messages.
Step 3, system are obtained the measurement result of this reporting of user, when confirming that the target Microcell of quality is satisfied in existence, then the business that the user asked are switched to described target Microcell, finish this process then.
When the pilot signal quality of the Microcell that measures when system validation is higher than a predefined thresholding Ta, think that then this Microcell satisfies the quality requirement that switches.If when existing a plurality of Microcells all to satisfy quality requirement, then therefrom select the best Microcell of signal as Target cell.
In conjunction with Fig. 2 the process of step 1 to step 3 is described further: if the user initiates the request of setting up the high-speed data downloading service in macrocell A, then system is at first setting up in macrocell A professional, simultaneity factor requires the user to measure and obtain to cover this user's Microcell information (supposing the Microcell 1 among the figure), then system switches to the target Microcell to the user that this carries out the data download according to the measurement result (Microcell 1) of reporting of user, and promptly Microcell 1.
As can be seen from the above step, the present invention is assigned to Microcell by the type according to business with the high speed business that described user asks, thereby for business provides at a high speed, the transfer of data of smoothness.
When system determines that type of service that the user asks is low-speed data service, carry out following steps:
Step S107, system judges according to described type information whether user's present access subzone is macrocell, if, execution in step S108 then; Otherwise, execution in step S109.
Step S108 for this user sets up the business of being asked, finishes this process then in the macrocell of current access.
Step S109, select target macrocell in the macrocell of the upper strata of current Microcell, and the business that the user asked switched to described target macro sub-district, finish this process then.The specific implementation process comprises:
Step 1, system connects in current Microcell for this user, notifies the user that the upper strata macrocell of current Microcell is measured by measuring control messages.
Here, system notifies the user that the pilot signal of upper strata macrocell is measured by measuring control messages.
Step 3, system are obtained the measurement result of this reporting of user, when confirming that the target macro sub-district of quality is satisfied in existence, then the business that the user asked are switched to described target macro sub-district, finish this process then.
When system determines that the pilot signal quality of certain macrocell of measuring is higher than a predefined thresholding Tb, think that then this macrocell satisfies the quality requirement that switches.If when existing a plurality of macrocells all to satisfy quality requirement, then therefrom select the best macrocell of signal as Target cell.
In conjunction with Fig. 2 the process of step 1 to step 3 is described further: if the user initiates to set up the request of voice communication in Microcell 1, then system at first sets up business in Microcell A, simultaneity factor requires the user to measure and obtain to cover the macro cell message (supposing the macrocell A among the figure) of this user's Microcell, then system switches to the target macro sub-district according to the measurement result (macrocell A) of reporting of user with this user who carries out voice communication, i.e. macrocell A.
By above-mentioned steps as can be seen, the present invention arrives macrocell by the type according to business with the low speed traffic assignments that described user asks, thereby reduces the interference of low speed business to other high-speed data service in the Microcell.
Because in layered cell structure, what the relative Microcell of the coverage of macrocell will be big is many, therefore a macrocell has often covered a plurality of Microcells, that is to say, a user who communicates with Microcell also is covered with by certain specific macrocell simultaneously.Therefore, if the information of the network planning during according to networking, system can know the macro cell message that has covered the user place access Microcell of initiating the low speed service request in advance, then can not need the user to start measurement and obtain Target cell, system directly switches to the macrocell that covers current access Microcell to the user.The invention provides second embodiment at this situation, as shown in Figure 4, comprising:
Step S201, user send in the access sub-district and set up service request message to system, are carrying professional type information in the message, and the identification information that inserts the sub-district.
Step S202, system is according to obtaining the type information that the user inserts the sub-district in the network planning information of described identification information from the system of being stored in.
Step S203, system judges according to the traffic type information of user's request whether the business of user's request is high speed business.
When system determines that type of service that the user asks is high-speed data service, carry out following steps:
Step S204, system judges according to described type information whether the sub-district that the user inserts is Microcell, if, execution in step S205 then; Otherwise, execution in step S206.
Step S205 for this user sets up the business of being asked, finishes this process then in present access subzone.
Step S206, system select target Microcell in lower floor's Microcell of current macrocell finishes this process then for this user sets up the business of being asked.
Above-mentioned steps S201 step S101 to step S206 and first embodiment provided by the invention is identical to the described process of step S106, is not described in detail.
When system determines that type of service that the user asks is low-speed data service, carry out following steps:
Step S207, system judges according to described type information whether user's present access subzone is macrocell, if, execution in step S208 then; Otherwise, execution in step S209.
Step S208 for this user sets up the business of being asked, finishes this process then in present access subzone.
Step S209, select target macrocell in covering the macrocell of current Microcell, and the business that the user asked switched to described target macro sub-district, finish this process then.
The specific implementation process comprises:
Step 1, system get access to the macro cell message that covers current Microcell according to the information of the network planning.
Still in conjunction with Fig. 2 step 1 and step 2 are described in detail: if the user asks to set up voice communication from Microcell 2, system knows that according to the network planning information Microcell 2 regions are covered by macrocell A simultaneously, and then system directly directly is based upon macrocell A to this speech business user.
Consider Microcell because channel condition is good, the capacity height is retained in the Microcell even some are initiated low speed service access requesting users from this sub-district, neither be very big to the capacitance loss of Microcell.Therefore, be macrocell if the present access subzone of low speed business is set up in user's request, then system directly sets up business and the user is continued to be retained in current area for the user at present access subzone.At this situation, the invention provides the 3rd embodiment, as shown in Figure 6, comprising:
Step S301, user send in the access sub-district and set up service request message to system, are carrying professional type information in the message, and the identification information that inserts the sub-district.
Step S302, system is according to obtaining the type information that the user inserts the sub-district in the network planning information of described identification information from be kept at system.
Step S303, system judges according to the traffic type information of user's request whether the business of user's request is high speed business.
When system determines that type of service that the user asks is high-speed data service, carry out following steps:
Step S304, system judges according to described type information whether the sub-district that the user inserts is Microcell, if, execution in step S305 then; Otherwise, execution in step S306.
Step S305 for this user sets up the business of being asked, finishes this process then in present access subzone.
Step S306, system select target Microcell in lower floor's Microcell of current macrocell is set up the business of being asked for this user.
Above-mentioned steps S301 step S101 to step S306 and first embodiment provided by the invention is identical to the described process of step S106, is not described in detail.
When system determines that type of service that the user asks is low-speed data service, direct execution in step S307 then, directly selecting described access sub-district is Target cell, and the business of being asked for this user's foundation by described Target cell.
By the technical scheme of the invention described above as can be seen, the present invention combines features such as macrocell and Microcell are had in the layered cell structure different coverage, capacity, and according to the type of service of user applies, carry out rational traffic assignments, given full play to the jumbo advantage of the wide covering of floored community, in low speed QoSs such as assurance voice, improved the service quality of high-speed data service in the system.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (14)
1, a kind of method of carrying out traffic assignments in Hierarchical Network is characterized in that, comprising:
A, user send in the access sub-district and set up service request message to system, are carrying the identification information of professional type information and access sub-district in the described message;
B, system inquire about type information select target sub-district in Hierarchical Network of described access sub-district according to the traffic type information of user's request and according to the identification information of described access sub-district, and the business of being asked for this user's foundation by described Target cell.
2, method according to claim 1 is characterized in that, described step B specifically comprises:
B1, system obtain the type information that the user inserts the sub-district according to the identification information that inserts the sub-district from the information of the network planning;
B2, according to traffic type information select target sub-district in Hierarchical Network of described cell type information and described user request, and the business of being asked for this user's foundation by described Target cell.
3, method according to claim 2 is characterized in that, when system determined that type of service that the user asks is high-speed data service, described step B2 specifically comprised:
B21, system judge according to described cell type information whether the sub-district that the user inserts is Microcell, if, execution in step B22 then; Otherwise, execution in step B23;
B22, the business of being asked for this user's foundation in present access subzone finish this process then;
B23, system select target Microcell in lower floor's Microcell of current macrocell is set up the business of being asked for this user.
4, method according to claim 3 is characterized in that, described step B23 specifically comprises:
B231, system connect in current macrocell for this user, notify the user that lower floor's Microcell of current macrocell is measured by measuring control messages;
B232, described user measure the Microcell of described lower floor, and measurement result are reported system;
B233, system obtain the measurement result of this reporting of user, when confirming to have the target Microcell, then the business that the user asked are switched to described target Microcell.
5, method according to claim 4 is characterized in that, described step B233 specifically comprises:
B2331, system obtain the measurement result of this reporting of user;
B2332, when system determines that according to the measurement result obtained the pilot signal quality of the Microcell that measures is higher than the thresholding of setting, determine that then described Microcell satisfies the quality requirement that switches;
B2333, from the Microcell of the quality requirement that satisfy to switch, select the best Microcell of signal as Target cell;
B2334, the business that the user asked is switched to described target Microcell.
6, method according to claim 2 is characterized in that, when system determined that type of service that the user asks is low-speed data service, described step B2 specifically comprised:
B24, system judge according to described cell type information whether user's present access subzone is macrocell, if, execution in step B25 then; Otherwise, execution in step B26;
B25, the business of being asked for this user's foundation in present access subzone finish this process then;
B26, in the macrocell of the upper strata of current Microcell or cover select target macrocell in the macrocell of current Microcell, and the business that the user asked is switched to described target macro sub-district.
7, method according to claim 6 is characterized in that, described step B26 specifically comprises:
B261, system connect in current Microcell for the user, notify the user that the macrocell on upper strata is measured, and obtain the target macro sub-district according to measurement result and set up the business of being asked for this user, finish this process then;
Or,
B262, system get access to the macro cell message that covers current Microcell according to the information of the network planning, switch to described target macro sub-district then according to the macro cell message select target macrocell of the current Microcell of covering that gets access to, and with requested service.
8, method according to claim 7 is characterized in that, described step B261 specifically comprises:
B2611, system connect in current Microcell for this user, notify the user that the upper strata macrocell of current Microcell is measured by measuring control messages;
B2612, described user measure the macrocell on described upper strata, and measurement result are reported system;
B2613, system obtain the measurement result of this reporting of user, when confirming to have the target macro sub-district, then the business that the user asked are switched to described target macro sub-district.
9, method according to claim 8 is characterized in that, described step B2613 specifically comprises:
B26131, system obtain the measurement result of this reporting of user;
B26132, when system determines that according to the measurement result obtained the pilot signal quality of the macrocell that measures is higher than the thresholding of setting, determine that then described macrocell satisfies the quality requirement that switches;
B26133, from the macrocell of the quality requirement that satisfy to switch, select the best macrocell of signal as Target cell;
B26134, the business that the user asked is switched to described target macro sub-district.
10, method according to claim 2 is characterized in that, when system determined that type of service that the user asks is low-speed data service, described step B2 specifically comprised:
Selecting this access sub-district is Target cell, and sets up the business of being asked for this user by described Target cell.
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| US9699696B2 (en) * | 2014-06-09 | 2017-07-04 | Cisco Technology, Inc. | System and method for providing handover to an ambiguous small cell access point in a network environment |
| US9807652B2 (en) * | 2014-06-09 | 2017-10-31 | Cisco Technology, Inc. | System and method for providing handover to an ambiguous small cell access point in a network environment |
| CN111263411A (en) * | 2018-12-03 | 2020-06-09 | 中国移动通信集团浙江有限公司 | Method, base station and equipment for speech and numerical service layered transmission |
| CN111836325B (en) * | 2019-04-18 | 2021-09-17 | 华为技术有限公司 | Cell switching method and device |
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2005
- 2005-10-08 CN CNB2005101059982A patent/CN100486354C/en active Active
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