CN103327499B - A kind of indoor base station cell method for building up - Google Patents
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Abstract
The present invention discloses a kind of indoor base station cell method for building up, traction community and service district is constructed by the indoor base station being linked into mobile core network by wired broadband network, indoor base station is centered by present position, one by one radio environment measurements is carried out to the radio band that mobile communication each evolution stage promulgates, obtain some frequencies and form available frequency pond, and build traction subdistrict frequency point pond and frequency pond, service district, the carrier frequency point of the traction community of indoor base station is from traction subdistrict frequency point pond, the carrier frequency point of service district comes from frequency pond, service district, the frequency choosing traction subdistrict frequency point pond constructs the traction community of minimum frequency point sets, the frequency choosing frequency pond, service district constructs the service district of minimum frequency point sets, indoor base station passes through terminal access capability, band support ability, after the synthetic determination of supporting business ability and indoor base station load-carrying ability, by terminal transfer to and terminal capability to match, on the carrier wave of the indoor base station that load is appropriate.
Description
Technical Field
The invention belongs to the technical field of mobile communication, and particularly relates to a method for establishing an indoor base station cell.
Background
In view of the fact that users have stronger dependence on mobile communication technology, users have higher and higher requirements on services, and further have more and more requirements on wireless frequency band resources, and the service categories are more and more comprehensive. The international telecommunications union ITU is gradually planning new frequency bands to meet the demand of mobile communications according to the demand and development. The 3GPP standardization organization and the CCSA are based on these frequency band planning and the introduction of new services, and the corresponding technical standards are also under continuous improvement and evolution. China mobile network construction, equipment development and the like are also implemented and developed in stages according to frequency bands approved by the national radio committee, network frequency band evolution strategies and standard evolution. Due to such continuous evolution, different device capabilities are brought about in the existing network, for example, the capabilities of the mobile terminal device in the existing network for supporting the frequency band and the services are different, some network devices and terminal devices can only support part of the frequency band and services in the evolution process, and some devices can support more or all of the frequency band and the services. Therefore, in the current network operation, there is a case that devices with different capabilities operate simultaneously. In view of the following entering devices, it is necessary to be compatible with the devices operating on the current network in principle, and also to consider the problem of coexistence with the currently operating network, so as to minimize the interference of the newly introduced devices on the existing network. The indoor base station device, as a new type of network device, directly faces the above-mentioned problems when accessing to a mobile network.
When the indoor base station equipment is added to the mobile network to provide services for users, not only the interference to the mobile network needs to be reduced, but also the mobile terminals with different capabilities in the evolution process under the mobile network need to be considered. The method can achieve the aims of low interference, strong compatibility and satisfactory service for users after fully considering the factors.
Disclosure of Invention
To solve the above-mentioned problems, the object of the present invention is: the method is used for establishing the indoor base station, so that when terminals with different capabilities operating under the current mobile network enter an indoor base station coverage area, each carrier of the indoor base station cell can be configured autonomously, and after comprehensive judgment on the terminal supporting frequency band capability, the supporting service capability and the indoor base station load capability, the mobile terminal is migrated to the carrier matched with the capability of the terminal. The indoor base station established by the method can reduce the interference to the current network and provide satisfactory service for terminal users with different capabilities.
The concept of the traction cell and the service cell for achieving the migration of the mobile terminal user from the outdoor macro base station to the indoor base station can be seen in the invention patent application of 'a method for establishing a multi-carrier frequency indoor base station' with the application number of 200810200806.X of the applicant.
The technical scheme of the invention is that the indoor base station accessed to the mobile core network through the wired broadband network constructs a traction cell and a service cell, the traction cell and the service cell work in a mode of independently establishing single carrier or multi-carrier, wherein,
the indoor base station takes the position as the center, carries out wireless environment measurement on wireless frequency bands issued by each evolution stage of mobile communication one by one, obtains a plurality of frequency points to form an available frequency point pool, constructs a traction cell frequency point pool and a service cell frequency point pool by the available frequency point pool, carrier frequency points of a traction cell of the indoor base station come from the traction cell frequency point pool, carrier frequency points of a service cell come from the service cell frequency point pool,
selecting a traction cell with a frequency point structure minimum frequency point set in a traction cell frequency point pool, selecting a service cell with a frequency point structure minimum frequency point set in a service cell frequency point pool,
and the indoor base station comprehensively judges the terminal access capability, the supporting frequency band capability, the supporting service capability and the indoor base station load capability, and then transfers the mobile terminal to the indoor base station carrier wave which is matched with the terminal capability and has proper load.
Further, the frequency points in the traction cell frequency point pool and the service cell frequency point pool include:
the unused frequency points, i.e. the idle frequency points,
at unused frequency points in the frequency band that has been planned for the indoor base station,
the frequency points at which the received signal level is below a specified threshold level.
Furthermore, the traction cell is composed of a single carrier or a plurality of carriers, the carrier frequency point of the traction cell is from a traction cell frequency point pool, each frequency point in the traction cell frequency point pool is from a neighbor cell list of each cell where system information broadcasting exists at the position of the indoor base station, the common part intersection set of the neighbor cell lists of each cell forms the traction cell frequency point pool, one frequency point in each intersection set forms the minimum frequency point set of the traction cell,
for each frequency point selected in the minimum frequency point set of the traction cell, preferentially selecting an idle frequency point in each intersection, and if the idle frequency point does not exist, selecting the frequency point from low to high according to the receiving power level by taking a specified threshold level as an upper limit;
the traction cell transmits pilot signals and broadcast system messages on each carrier wave corresponding to the formed minimum frequency point set;
the traction cell analyzes the terminal identity, the terminal capability and the load condition of each frequency point of the service cell and acquires information, and the mobile terminal with access permission is migrated to the frequency point of the service cell which is matched with the terminal capability and has proper load through analysis and judgment.
Furthermore, the frequency point of the traction cell can be further expanded by adding other frequency points in each intersection on the minimum frequency point set of the traction cell.
Furthermore, the service cell is composed of a single carrier or a plurality of carriers, the frequency point of the carrier comes from the frequency point pool of the service cell,
the service cell frequency point pool is obtained by the following method:
analyzing the cell broadcasted by the system message at the position of the indoor base station to obtain each frequency point of the neighbor cell list of each cell, removing the frequency points in the available frequency point pool to obtain the service cell frequency point pool,
if the frequency points do not exist, selecting the frequency points except the frequency points which are already used as the traction cell frequency point set in the neighbor cell list;
if no available frequency point still exists, selecting frequency points except the frequency point which is used as the minimum frequency point set of the traction cell from the frequency point pool of the traction cell;
selecting frequency points corresponding to each working frequency band in a frequency point pool of a service cell, constructing a minimum frequency point set of the service cell, selecting the frequency points according to the selection of idle frequency points firstly, then selecting the frequency points with a specified threshold level as an upper limit and selecting the frequency points from low to high according to the power level,
a pilot channel can be established autonomously on each frequency point of the minimum frequency point set of the service cell and system information is broadcasted;
the service capability on each carrier of the service cell can be configured autonomously: can be configured to only support CS domain service application, can be configured to only support PS domain service application, can be configured to support mixed application of CS domain and PS domain,
the configuration of the service capability on each carrier of the service cell can support the migrated terminals with different capabilities.
Further, on the basis of the minimum frequency point set of the service cell, the frequency points in the frequency point pool of the service cell are continuously selected for expansion.
Furthermore, each frequency point of the traction cell and the service cell works in different frequencies.
Further, any one of the traction cell and the service cell can provide a synchronization function for the system;
the traction cell and the service cell share the same synchronous source; the transmit-receive switching points of the two cells are kept consistent.
Furthermore, the multiple carriers of the traction cell and the service cell may be composed of multiple single-channel single carriers, or may be composed of multiple single-channel multiple carriers, or may be composed of a combination of these two forms.
A method for establishing an indoor base station cell comprises the following steps:
step 1, an indoor base station carries out wireless environment measurement on all supported standard systems and all issued frequency bands to obtain frequency points which can be used in all frequency bands, an available frequency point pool F is constructed, and a synchronization source for synchronizing the indoor base station and an actual operation system is selected;
step 2, selecting a frequency point pool FQ suitable for constructing a frequency point of a traction cell according to a selection strategy;
step 3, selecting a frequency point pool FY suitable for constructing the frequency point of the service cell from the available frequency point pool F according to a selection strategy; if the frequency point pool FY does not have the frequency points meeting the conditions, continuously selecting from a set FN and a frequency point pool FQ of a neighbor cell list of each cell existing at the position of the indoor base station;
step 4, selecting a frequency point in the frequency point pool FQ to construct a minimum frequency point set FQmin of a traction cell; selecting a minimum frequency point set FYmin of a frequency point construction service cell in a frequency point pool FY;
step 5, sending pilot signals and broadcast system messages on the established traction cell and the service cell;
step 6, the mobile terminal accesses an indoor base station;
step 7, judging the identity of the access terminal, the capacity of supporting the frequency band and the capacity of supporting the service in the traction cell;
step 8, allowing the authorized user to access based on the information obtained in step 7, and selecting the frequency point of the service cell matched with the terminal capacity according to the terminal capacity;
step 9, if the service load on the frequency point of the service cell is proper, the terminal can be transferred to the frequency point of the selected service cell; otherwise, the terminal is moved to the frequency point of another service cell supporting the terminal capability;
step 10, providing service for a terminal entering an indoor base station coverage area;
step 11, if the surrounding wireless environment changes, or the wireless environment measurement time limit is up, or the indoor base station is abnormal, returning to the step 1; otherwise, returning to the step 5.
The indoor base station constructed by the method of the invention can be compatible with the mobile terminals with different capabilities running on the network, and cannot obtain service in the coverage area of the indoor base station due to the problem of the terminal capability; by monitoring and judging the network capability, the synchronization source cell of the indoor base station can be correctly selected in a complex coverage scene, an available frequency point list for constructing a traction cell and a service cell is selected, a cell supporting multiple frequency bands and cells supporting different service capabilities are constructed, and satisfactory service is provided for users. In the method, the method for constructing the cell of the indoor base station is based on the criterion that the interference between the indoor base station and the surrounding mobile communication system is minimum, and the indoor base station supports the mobile terminals with different capabilities according to the maximum capability.
Drawings
FIG. 1 is a schematic view of an application scenario of an indoor HNB in the present invention
FIG. 2 is a schematic diagram of the distribution of the operating frequency bands of the TD-SCDMA3G system
Fig. 3 is a schematic diagram of available frequency point extraction in the frequency band B101
Fig. 4 is a schematic diagram of available frequency point extraction in the frequency band B102
Fig. 5 is a schematic diagram of available frequency point extraction in the frequency band B10M
Fig. 6 is a schematic diagram of available frequency point extraction in the frequency band B10N of fig. 6
FIG. 7 is a schematic diagram of frequency point pool composition of a traction cell
FIG. 8 is a flowchart of a method for establishing an indoor BS cell according to an embodiment of the present invention
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
As shown in fig. 1, in a TD-SCDMA network of the third generation mobile communication, an indoor base station HNB is used as a device introduced into the network later, and macro base station devices MNB1, MNB2, MNB3, … of the TD-SCDMA work together in the existing mobile network; in the existing network, TD-SCDMA terminal devices with different capabilities work: terminal 1, terminal 2, … …, terminal m, terminal n.
As shown in fig. 2, the bands B101, B102, … B10N are sequentially allocated to TD-SCDMA by the national radio commission. In view of the fact that the working frequency band is continuously expanded, the types of the terminals working in the network are different, and the terminals support single frequency band, multiple frequency bands and all frequency bands; there are voice, data, HSDPA, and HSUPA services, among others. But anyway, as a network device, all types of handsets must be provided with services. As an indoor base station of a network device, it is necessary to support different types of terminals in the same network system to work. The indoor base station can not affect the normal operation of the existing network, that is: the interference to the existing network can not be brought, and the interference by the existing network can not be brought; the quality of service provided also meets the requirements of the user. Therefore, a reasonable method is needed to achieve the goal of harmonious coexistence and high-quality service.
The key point of the method for establishing the mobile communication indoor base station cell is that the autonomous configuration capacity of the indoor base station frequency point is increased, the selection space is increased, and the method is more flexible and effective by selecting a plurality of frequency band frequency points; by comprehensively allocating the available frequency point resources of each frequency band, the working frequency points of the indoor base station can be flexibly allocated, the selected frequency points and the frequency points of cells existing around the selected frequency points can work at different frequencies and are far away from the frequency points as far as possible, and the mutual interference between the systems is controlled to be minimum by the protection of the channel interval; when mobile terminals with different capabilities enter the coverage area of the indoor base station to request service, the indoor base station transfers the mobile terminals to the carrier wave of the service cell matched with the capabilities of the mobile terminals according to the capabilities of the accessed mobile terminals, and satisfactory service is provided for the mobile terminals with different capabilities.
After the indoor base station is powered on, searching the working frequency bands B101, B102, … B10M and B10N of the supported standard which are already promulgated and used on the current network to obtain an available frequency point pool F; the frequency point pool F is composed of a subset of available frequency tables in each frequency band of B101, B102, … B10M, B10N:
f ═ F101, F102, …, F10M, F10N, where
The subsets F101-F10N respectively correspond to all frequency points available in the frequency bands B101-B10N, and the frequency points in each subset are as follows: f101 ═ F11, F12,. F1a }; f102 ═ F21, F22,. F2b }; …, respectively; F10M ═ fm1, fm2,. fmc }; F10N ═ fn1, fn2,. fnd. Wherein,
fxx indicate a particular frequency point. All the frequency points in the frequency point pool F have the characteristic that the frequency points all belong to the frequency points in the working frequency bands B101, B102, … B10M and B10N, and the frequency points are unused frequency points, namely idle frequency points, measured at the current position by the indoor base station, or idle frequency points measured at the current position in the frequency band planned for the indoor base station, or frequency points of which the received signal level measured at the current position is lower than a specified threshold level.
The constructed frequency points of the traction cell are characterized by consisting of one or more frequency points from a frequency point pool FQ of the traction cell; each frequency point in the frequency point pool FQ of the traction cell comes from a neighbor cell list of each cell with system information broadcast at the position of the indoor base station; a set FN of neighbor cell lists of each cell where the indoor base station is located, is { FN101, FN102,. and.10 10Z }: FN101 ═ f1n1, f1n2, … f1nf }; FN102 ═ f2n1, f2n2, … f2nh }; …, respectively; FN10Z ═ fzn1, fzn2, … fzni }. An intersection set FQ formed by public parts of FN 101-FN 10Z is { FQ1, FQ2, … and FQB }, and a frequency point pool FQ of the traction cell is formed. Each frequency point is taken out from the FQ 1-FQB to form a minimum set FQmin of the traction cell, wherein the minimum set FQmin is { f1q, f2q, … fbq }; the frequency points in FQmin are preferably selected from the frequency points measured at the position of the indoor base station in FQ 1-FQB, if the free frequency points do not exist, the frequency point selection is carried out from low to high according to the receiving power level by taking the specified threshold level as the upper limit; the traction cell can be expanded by continuously selecting frequency points in FQ 1-FQB on FQmin.
The constructed frequency points of the service cell are characterized in that the frequency points can be composed of one or more frequency points, and the frequency points are from a frequency point pool FY of the service cell; each frequency point in the frequency point pool FY of the service cell consists of each frequency point in F101-F10N subsets: FY101 ═ f1y1, f1y2, … f1yk }; FY102 ═ f2y1, f2y2, … f2yl }; …, respectively; FY10M ═ fmy1, fmy2, … fmyp }; FY10N ═ fny1, fny2, … fnys }. Each frequency point in the FY pool is the frequency point except the set FN of the neighbor cell list of each cell existing at the position of the indoor base station in the available frequency point pool F; if the frequency points forming the FY pool are not available in the F101-F10N, selecting the frequency points except the frequency point pool FQ which is used as the traction cell from the FN; and if no frequency point is available, selecting frequency points except the frequency points which are already used as the minimum frequency point set FQmin of the traction cell. Each frequency point is taken out from FY 101-FY 10N to form a minimum set FYmin of a service cell, wherein the minimum set FYmin is { f1y, f2y, … fmy, fny }, each frequency point in the FYmin is selected to follow the selection of an idle frequency point first, and if no idle frequency point exists, the frequency point is selected according to a strategy that the power level is from low to high by taking a specified threshold level as an upper limit; each frequency point in the minimum frequency point set FYmin of the service cell is formed to correspond to each working frequency band operated in the mobile network; pilot channels can be established autonomously on each frequency point and system information is broadcasted; and the service cell can be expanded by continuously selecting the frequency points of FY 101-FY 10N on FYmin.
For a mobile terminal on a public network, when the mobile terminal enters a coverage area of an indoor base station, firstly, the mobile terminal is accessed in a traction cell, and the mobile terminal is transferred to a service cell by judging the identity of a user and the capability of the terminal; the migration is characterized in that the mobile terminal is migrated to a carrier corresponding to the frequency point of the service cell matched with the capacity of the mobile terminal according to the capacity of the terminal for supporting the frequency band, the capacity for supporting the service and the load condition of the service cell. When a terminal supporting multi-band capability is migrated, the interference reduction is taken as a criterion, and the migration principle is to migrate according to the sequence from unused frequency bands in the surrounding environment, frequency bands which are not frequently used to frequency bands which are densely used; and selecting a service cell carrier matched with the service capability of the terminal according to the service capability of the terminal.
The mobile terminal in the past migration takes the load of the cell corresponding to each frequency point of the service cell as reference, so as to ensure that the cell load of each frequency point keeps balanced.
The signal processing method for establishing the indoor base station cell mainly comprises the following steps:
step S101, starting up an indoor base station;
step S102, the indoor base station carries out wireless environment measurement on all frequency bands which are already issued and support standard systems, obtains frequency points which can be used in all frequency bands, constructs an available frequency point pool F, and selects a synchronous source of the indoor base station which is synchronous with an actual operation system;
step S103, judging whether a frequency point meeting the condition exists in the frequency point pool F, and if so, executing 0; otherwise, executing S201 to prompt the user to replace the installation position;
step S104, selecting a frequency point pool FQ suitable for constructing a frequency point of a traction cell according to a selection strategy;
step S105, judging whether an FQ meeting the conditions exists or not, and if so, executing 0; otherwise, executing S202 self-cell building;
step S106, selecting a frequency point pool FY suitable for constructing the frequency point of the service cell in the frequency point pool F according to a selection strategy;
step S107, judging whether an FY meeting the conditions exists, and if so, executing step S108; otherwise, S203 is executed, and selection is continuously performed in the sets FN and FQ of the neighbor cell lists of each cell existing at the position of the indoor base station, and then 0 is executed;
step S108, selecting a frequency point in the FQ to construct a minimum frequency point set FQmin of a traction cell; selecting a minimum frequency point set FYmin of a frequency point construction service cell in the FY;
step S109, sending pilot signals and broadcast system messages on the established traction cell and the service cell;
step S110, the mobile terminal accesses an indoor base station;
step S111, judging the identity of the access terminal, the capacity of supporting the frequency band and the capacity of supporting the service in the traction cell;
step S112, based on the information obtained in S111, allowing the authorized user to access, and selecting the frequency point of the service cell matched with the terminal capacity according to the terminal capacity;
step S113, judging the service load on the frequency point of the service cell;
step S114, if the service load on the frequency point of the service cell is proper, executing S115; otherwise, executing S204, and migrating to the frequency point of another service cell supporting the terminal capability;
step S115, the terminal is migrated to the frequency point of the selected service cell;
step S116, providing service for terminal entering indoor base station coverage area
Step S117, if the surrounding wireless environment changes, or the wireless environment measurement timer expires, or the indoor base station is abnormal, return to step S102; otherwise, returning to the step S109;
in the method of the above embodiment, in order to achieve the concept of the pull cell and the service cell mentioned in the migration of the mobile terminal user from the outdoor macro base station to the indoor base station, the invention patent application of "a method for establishing a multi-carrier frequency indoor base station" with application number 200810200806.X of the present applicant can be seen.
The embodiments of the present invention are not intended to limit the scope of the claims of the present invention, and those skilled in the art can make various modifications and adaptations to other standard mobile communication systems within the scope of the claims of the present invention, and the modifications and adaptations also fall into the scope of the present invention.
Claims (9)
1. An indoor base station cell establishing method is characterized in that a traction cell and a service cell are constructed by an indoor base station accessed to a mobile core network through a wired broadband network, the traction cell and the service cell work in a mode of autonomously establishing single carrier or multiple carriers, wherein,
the indoor base station takes the position as the center, carries out wireless environment measurement on wireless frequency bands issued by each evolution stage of mobile communication one by one, obtains a plurality of frequency points to form an available frequency point pool, constructs a traction cell frequency point pool and a service cell frequency point pool by the available frequency point pool, carrier frequency points of a traction cell of the indoor base station come from the traction cell frequency point pool, carrier frequency points of a service cell come from the service cell frequency point pool,
selecting the frequency points in a traction cell frequency point pool to construct a traction cell with a minimum frequency point set, wherein each frequency point in the traction cell frequency point pool is from a neighbor cell list of each cell with system message broadcast at the position of an indoor base station, the common part intersection sets of the neighbor cell lists of each cell form the traction cell frequency point pool, one frequency point in each intersection set forms the minimum frequency point set of the traction cell,
for each frequency point selected in the minimum frequency point set of the traction cell, preferentially selecting an idle frequency point in each intersection, and if the idle frequency point does not exist, selecting the frequency point from low to high according to the receiving power level by taking a specified threshold level as an upper limit;
selecting the frequency points of a frequency point pool of the service cell to construct the service cell with the minimum frequency point set, wherein the frequency point pool of the service cell is obtained by the following method:
analyzing the cell broadcasted by the system message at the position of the indoor base station to obtain each frequency point of the neighbor cell list of each cell, removing the frequency points in the available frequency point pool to obtain the service cell frequency point pool,
if the frequency points do not exist, selecting the frequency points except the frequency points which are already used as the traction cell frequency point set in the neighbor cell list;
if no available frequency point still exists, selecting frequency points except the frequency point which is used as the minimum frequency point set of the traction cell from the frequency point pool of the traction cell;
selecting frequency points corresponding to each working frequency band in a frequency point pool of a service cell, constructing a minimum frequency point set of the service cell, selecting the frequency points according to the selection of idle frequency points firstly, then selecting the frequency points with a specified threshold level as an upper limit and selecting the frequency points from low to high according to the power level,
a pilot channel can be established autonomously on each frequency point of the minimum frequency point set of the service cell and system information is broadcasted;
the service capability on each carrier of the service cell can be configured autonomously: can be configured to only support CS domain service application, can be configured to only support PS domain service application, can be configured to support mixed application of CS domain and PS domain,
the configuration of the service capability on each carrier of the service cell can support the transferred terminals with different capabilities;
and the indoor base station comprehensively judges the terminal access capability, the supporting frequency band capability, the supporting service capability and the indoor base station load capability, and then transfers the mobile terminal to the indoor base station carrier wave which is matched with the terminal capability and has proper load.
2. The method for establishing an indoor base station cell of claim 1, wherein pulling the frequency points in the frequency point pool of the cell and the frequency point pool of the service cell comprises:
the unused frequency points, i.e. the idle frequency points,
at unused frequency points in the frequency band that has been planned for the indoor base station,
the frequency points at which the received signal level is below a specified threshold level.
3. An indoor base station cell establishment method according to claim 2,
the traction cell transmits pilot signals and broadcast system messages on each carrier wave corresponding to the formed minimum frequency point set;
the traction cell analyzes the terminal identity, the terminal capability and the load condition of each frequency point of the service cell and acquires information, and the mobile terminal with access permission is migrated to the frequency point of the service cell which is matched with the terminal capability and has proper load through analysis and judgment.
4. An indoor base station cell establishment method according to claim 3,
the frequency points of the traction cell can be further expanded by adding other frequency points in each intersection on the minimum frequency point set of the traction cell.
5. The method for establishing an indoor base station cell as claimed in claim 4, wherein the expansion is performed by continuously selecting the frequency points in the frequency point pool of the service cell on the basis of the minimum frequency point set of the service cell.
6. The method for establishing an indoor base station cell of claim 1, wherein each frequency point of the pull cell and the service cell is operated by an inter-frequency.
7. An indoor base station cell establishing method according to claim 1, wherein any one of the traction cell and the service cell is capable of providing a synchronization function for the system;
the traction cell and the service cell share the same synchronous source; the transmit-receive switching points of the two cells are kept consistent.
8. The method for establishing an indoor base station cell as claimed in claim 1, wherein the plurality of carriers of the traction cell and the service cell may be composed of a plurality of single-channel single carriers, or may be composed of a plurality of single-channel multi-carriers, or may be composed of a combination of the two forms.
9. A method for establishing an indoor base station cell is characterized by comprising the following steps:
step 1, an indoor base station carries out wireless environment measurement on all supported standard systems and all issued frequency bands to obtain frequency points which can be used in all frequency bands, an available frequency point pool F is constructed, and a synchronization source for synchronizing the indoor base station and an actual operation system is selected;
step 2, selecting a frequency point pool FQ suitable for constructing a frequency point of a traction cell according to a selection strategy;
step 3, selecting a frequency point pool FY suitable for constructing the frequency point of the service cell from the available frequency point pool F according to a selection strategy; if the frequency point pool FY does not have the frequency points meeting the conditions, continuously selecting from a set FN and a frequency point pool FQ of a neighbor cell list of each cell existing at the position of the indoor base station;
step 4, selecting a frequency point in the frequency point pool FQ to construct a minimum frequency point set FQmin of a traction cell; selecting a minimum frequency point set FYmin of a frequency point construction service cell in a frequency point pool FY;
step 5, sending pilot signals and broadcast system messages on the established traction cell and the service cell;
step 6, the mobile terminal accesses an indoor base station;
step 7, judging the identity of the access terminal, the capacity of supporting the frequency band and the capacity of supporting the service in the traction cell;
step 8, allowing the authorized user to access based on the information obtained in step 7, and selecting the frequency point of the service cell matched with the terminal capacity according to the terminal capacity;
step 9, if the service load on the frequency point of the service cell is proper, the terminal can be transferred to the frequency point of the selected service cell; otherwise, the terminal is moved to the frequency point of another service cell supporting the terminal capability;
step 10, providing service for a terminal entering an indoor base station coverage area;
step 11, if the surrounding wireless environment changes, or the wireless environment measurement time limit is up, or the indoor base station is abnormal, returning to the step 1; otherwise, returning to the step 5;
in step 4, each frequency point in the frequency point pool of the traction cell comes from the adjacent cell list of each cell where the system information broadcast exists at the position of the indoor base station, the intersection set of the common parts of the adjacent cell lists of each cell forms the frequency point pool of the traction cell, each frequency point in each intersection set forms the minimum frequency point set of the traction cell,
for each frequency point selected in the minimum frequency point set of the traction cell, preferentially selecting an idle frequency point in each intersection, and if the idle frequency point does not exist, selecting the frequency point from low to high according to the receiving power level by taking a specified threshold level as an upper limit;
analyzing the cell broadcasted by the system message at the position of the indoor base station to obtain each frequency point of the neighbor cell list of each cell, removing the frequency points in the available frequency point pool to obtain the service cell frequency point pool,
if the frequency points do not exist, selecting the frequency points except the frequency points which are already used as the traction cell frequency point set in the neighbor cell list;
if no available frequency point still exists, selecting frequency points except the frequency point which is used as the minimum frequency point set of the traction cell from the frequency point pool of the traction cell;
selecting frequency points corresponding to each working frequency band in a frequency point pool of a service cell, constructing a minimum frequency point set of the service cell, selecting the frequency points according to the selection of idle frequency points firstly, then selecting the frequency points with a specified threshold level as an upper limit and selecting the frequency points from low to high according to the power level,
a pilot channel can be established autonomously on each frequency point of the minimum frequency point set of the service cell and system information is broadcasted;
the service capability on each carrier of the service cell can be configured autonomously: can be configured to only support CS domain service application, can be configured to only support PS domain service application, can be configured to support mixed application of CS domain and PS domain,
the configuration of the service capability on each carrier of the service cell can support the migrated terminals with different capabilities.
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| CN106792983B (en) * | 2017-01-03 | 2019-11-12 | 北京邮电大学 | A kind of connection control method and system |
| CN110769428B (en) * | 2019-11-22 | 2022-12-06 | 达闼机器人股份有限公司 | Method and device for constructing virtual base station, base station and wireless network system |
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| EP1919246A1 (en) * | 2006-11-03 | 2008-05-07 | NEC Corporation | Method and device for mobility management of mobile station in mobile communications system |
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| CN101715196A (en) * | 2008-09-29 | 2010-05-26 | 杰脉通信技术(上海)有限公司 | Method for establishing single-carrier indoor base station |
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