WO2013174350A2 - 在宏小区中部署低功率基站的方法、装置及rnc - Google Patents

在宏小区中部署低功率基站的方法、装置及rnc Download PDF

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Publication number
WO2013174350A2
WO2013174350A2 PCT/CN2013/080356 CN2013080356W WO2013174350A2 WO 2013174350 A2 WO2013174350 A2 WO 2013174350A2 CN 2013080356 W CN2013080356 W CN 2013080356W WO 2013174350 A2 WO2013174350 A2 WO 2013174350A2
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Prior art keywords
base station
user
cell
low power
power base
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PCT/CN2013/080356
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English (en)
French (fr)
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WO2013174350A3 (zh
Inventor
詹建明
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中兴通讯股份有限公司
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Publication of WO2013174350A2 publication Critical patent/WO2013174350A2/zh
Publication of WO2013174350A3 publication Critical patent/WO2013174350A3/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24—Cell structures
    • H04W16/32—Hierarchical cell structures
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present invention relates to the field of wireless communication technologies, and in particular, to a method, an apparatus, and an RNC (radio network controller) for deploying a low-power base station in a macro cell in a WCDMA system. Controller).
  • RNC radio network controller
  • low-power base stations such as Mi Cr0 , Pico or Metro base stations
  • these low-power base stations may be used for hotspot or hotspot coverage. Deploying low-power base stations can cause the following problems:
  • the uplink coverage boundary between the macro base station and the low power base station is relatively far from the downlink coverage boundary, that is, there is a large
  • the uplink and downlink unbalanced area the presence of the unbalanced area may cause users in the unbalanced area to cause great interference to the low power base station.
  • the uplink power of the low-power downlink coverage area UE may cause interference to the uplink of the macro cell.
  • the deployment of a large number of small power base stations in the macro cell may cause the user of the small power base station to cause greater interference to the macro cell uplink, and further Affects the uplink service experience of the UE, and even blocks user access of the macro cell.
  • the edge users of the low-power base station receive the downlink signals from the macro base station and the low-power base station at the same time. When there are more users, the downlink interference to the edge users is enhanced, which affects the downlink service performance of the edge users.
  • the embodiments of the present invention provide a method, an apparatus, and an RNC for deploying a low-power base station in a macro cell, which can reduce interference between a macro base station and a low-power base station, and improve user service performance of the macro base station and the low-power base station.
  • a method for deploying a low power base station in a macro cell including: And configuring, by the macro base station and the low power base station, at least two carriers in the same frequency band; performing different carrier priority access of the macro base station and the low power base station on the at least two carriers according to the location and/or service type of the user
  • the strategy forms a differentiated traffic load on the same carrier between the macro base station and the low power base station.
  • the macro base station and the low-power base station coverage cell are respectively the same-frequency independent cells; the performing, according to the location of the user, performing different priority carriers of the macro base station and the low-power base station on the at least two carriers
  • the step of forming a differentiated traffic load on the same carrier between the macro base station and the low power base station includes: differentially setting a cell reselection related parameter of the macro base station cell and the low power base station cell in the system information broadcast, so that the macro base station covers Differentiating with a cell reselection policy covered by the low power base station; according to the cell reselection policy, the user of the macro base station coverage cell and the low power base station coverage cell is preferentially camped on the corresponding coverage cell, and the macro base station covers the cell
  • the user-preferred carrier is different from the carrier in which the user of the low-power base station coverage cell preferentially camps; the service initiated by the user camped by the macro base station and the low-power base station preferentially establish
  • the macro base station and the low power base station are differentiated in traffic load on the same carrier.
  • the macro base station and the low-power base station coverage cell are respectively the same-frequency independent cells; and the performing different priority carriers of the macro base station and the low-power base station on the at least two carriers according to the user service type
  • the step of forming a differentiated traffic load on the same carrier between the macro base station and the low power base station includes: acquiring a service type initiated by the macro base station and the user camped by the low power base station, or passively initiated; according to the macro base station and the low power base station The service type of the active or passively initiated user of the resident user selects the corresponding camped cell on the at least two carriers to establish different user services, and forms a differentiated service load on the same carrier between the macro base station and the low power base station.
  • the macro base station and the low-power base station coverage cell are merged into one logical cell; the performing, according to the location of the user, performing different priority carriers of the macro base station and the low-power base station on the at least two carriers
  • the step of forming a differentiated service load on the same carrier between the macro base station and the low power base station includes: determining whether the user is in the macro base station coverage area or the low power base station coverage area; and determining, according to the determined location of the user, the macro base station The coverage area user and the low power base station coverage area user respectively select the corresponding carrier cell to establish a radio link, so that the user load of the coverage location of the macro base station in the same cell and the user load of the coverage location of the low power base station are differentiated.
  • the macro base station and the low-power base station coverage cell are merged into one logical cell; the performing, according to the location of the user and the type of user service, performing different on the at least two carriers of the macro base station and the low-power base station
  • the carrier priority access policy, the step of forming a differentiated traffic load between the macro base station and the low power base station on the same carrier includes: determining whether the user is in the macro base station coverage area or the low power base station coverage area; and acquiring the macro base station and the low power base station coverage
  • the user load of the macro base station coverage location in the same cell is differentiated from the user load of the low power base station coverage location.
  • the embodiment of the present invention further provides an apparatus for deploying a low-power base station in a macro cell, including: a configuration module, configured to configure at least two carriers in the same frequency band in both the macro base station and the low-power base station; And performing a different carrier priority access policy on the at least two carriers of the macro base station and the low power base station to form a differentiated service load on the same carrier of the macro base station and the low power base station.
  • the macro base station and the low power base station coverage cell are respectively the same frequency independent cells;
  • the policy execution module includes a parameter setting unit, configured to differentially set the macro base station cell and the low power base station cell in the system information broadcast.
  • the cell reselecting the relevant parameters, so that the macro base station coverage is differentiated from the cell reselection policy covered by the low power base station; the cell camping unit is configured to enable the macro base station to cover the cell and the low power base station to cover the cell according to the cell reselection policy.
  • the user is preferentially camped on the corresponding coverage cell, and the carrier that the macro base station coverage cell preferentially camps is different from the carrier that the user of the low power base station coverage cell preferentially camps; the first service establishment unit is set to the macro base station
  • the user-initiated service that resides with the low-power base station preferentially establishes a radio link on the cell where the user camps, so that the macro base station and the low-power base station form a difference in traffic load on the same carrier.
  • the macro base station and the low-power base station coverage cell are respectively the same-frequency independent cells;
  • the policy execution module includes: a service type acquisition unit, configured to acquire the active or passive initiated by the user that the macro base station and the low-power base station resides business type; a second service establishing unit, configured to select a corresponding camped cell to establish different user services on the at least two carriers according to a service type initiated or passively initiated by the user camped by the macro base station and the low power base station, to form a macro base The differentiated traffic load on the same carrier as the low power base station.
  • the macro base station and the low power base station coverage cell are merged into one logical cell;
  • the policy execution module includes: a determining unit, configured to determine whether the user is in a macro base station coverage area or a low power base station coverage area; and acquiring a macro base station
  • the service type initiated by the user of the low-power base station coverage area, or the low-power base station is set to be the coverage of the macro base station coverage area user and the low-power base station according to the determined location of the user and the service type initiated by the user.
  • the area users respectively select the corresponding carrier cell to establish a radio link, so that the user load of the macro base station coverage location in the same cell and the user load of the low power base station coverage location are differentiated.
  • the embodiment of the present invention further provides an RNC, which includes the apparatus for deploying a low power base station in a macro cell as described above.
  • a method, a device, and an RNC for deploying a low-power base station in a macro cell where the macro base station and the low-power base station are configured with at least two carriers in the same frequency band,
  • the macro base station and the low power base station form a difference or opposite to the access priority policy on the at least two carriers of the same frequency band, thereby forming a difference in the service load between the macro base station and the low power base station on the same carrier, and reducing the low power base station and the macro base station.
  • the probability of co-channel interference improves the user service performance of the macro base station and the low-power base station.
  • FIG. 1 is a schematic flowchart of a method for deploying a low-power base station in a macro cell according to an embodiment of the present invention
  • FIG. 2a is a schematic diagram showing an RNC preferentially accessing a macro base station cell or a low-power base station cell in which the UE resides according to an embodiment of the present invention
  • Figure 2b is a schematic diagram of a different carrier priority access policy according to the service type of the UE in the embodiment of the present invention
  • Figure 3 is a schematic structural diagram of an apparatus for deploying a low power base station in a macro cell according to the present invention
  • 4a is a schematic structural diagram of a policy execution module in an embodiment of a device for deploying a low-power base station in a macro cell according to the present invention
  • FIG. 1 is a schematic flowchart of a method for deploying a low-power base station in a macro cell according to an embodiment of the present invention
  • FIG. 2a is a schematic diagram showing an RNC preferentially access
  • FIG. 4b is a policy execution module in an embodiment of the device for deploying a low-power base station in a macro cell according to the present invention
  • FIG. 4 is a schematic structural diagram of another embodiment of a policy execution module in an embodiment of the apparatus for deploying a low-power base station in a macro cell according to the present invention.
  • the solution of the embodiment of the present invention is mainly: when both the macro base station and the low power base station are configured with at least two carriers in the same frequency band, the macro base station and the low power base station are at least two in the access policy.
  • the access priority policy on the frequency band carrier is different or opposite, so that the service load difference between the macro base station and the low power base station on the same carrier is formed, the probability of the same frequency interference of the low power base station and the macro base station is reduced, and the macro base station and the low base station are improved.
  • User service performance of the power base station is mainly: when both the macro base station and the low power base station are configured with at least two carriers in the same frequency band, the macro base station and the low power base station are at least two in the access policy.
  • the access priority policy on the frequency band carrier is different or opposite, so that the service load difference between the macro base station and the low power base station on the same carrier is formed, the probability of the same frequency interference of the low power base station and the macro base station is reduced, and the macro base
  • an embodiment of the present invention provides a method for deploying a low-power base station in a macro cell, including: Step S101: A macro base station and a low-power base station are configured with at least two carriers in the same frequency band; Step S102, according to Performing different carrier priority access policies of the macro base station and the low power base station on the at least two carriers to form a differentiated service between the macro base station and the low power base station on the same carrier, where the user is located and/or the service type load.
  • the low-power base station may be a Micro, Pico, or Metro base station.
  • the prior art deploys the same-frequency low-power base station in the macro cell, which causes a large interference between the macro base station and the low-power base station, affecting the macro base station and User service performance of low power base stations.
  • the user service performance of the macro base station and the low power base station is improved.
  • the macro base station and the low power base station both configure at least two carriers in the same frequency band.
  • the macro base station and the low power base station are in the at least two carriers.
  • the access priority policies on the upper part form a difference or the opposite, so that the service load difference between the macro base station and the low power base station on the same carrier is formed, and the probability of the same frequency interference of the low power base station and the macro base station is reduced.
  • different carrier priority access policies of the macro base station and the low power base station on the at least two carriers are performed according to the location of the user and the service type, and the macro base station and the low power base station are formed on the same carrier.
  • Differentiated business load In a specific implementation of the macro base station and the low power base station on the same carrier to form a difference in the traffic load, a variety of ways can be adopted.
  • the application scenarios in which the macro base station and the low power base station coverage cell are respectively the same frequency independent cells, and the macro base station and the low power base station coverage cell are combined into one logical cell are respectively illustrated.
  • the macro base station and the low-power base station coverage cell are respectively the same-frequency independent cells.
  • the RNC accesses according to the priority of the cell in which the UE resides.
  • the specific implementation manner is as follows: First, both the macro base station and the low power base station are configured with at least two carriers in the same frequency band. Then, the RNC differentially sets the cell reselection related parameters of the macro base station cell and the low power base station cell in the system information broadcast, so that the macro base station covers and The cell reselection policy covered by the low power base station is differentiated. According to the cell reselection policy, the user of the macro base station coverage cell and the low power base station coverage cell is preferentially camped on the corresponding coverage cell, and the macro base station covers the user of the cell.
  • FIG. 2a is a diagram of a priority access policy of a macro base station cell or a low power base station cell in which the RNC resides according to the embodiment of the present invention.
  • the F1 macro cell and the F2 macro cell, the F1 low power cell, and the F2 low power cell are separately set in the system information broadcast SIB11 or 12.
  • the cell reselection related parameters Qhyst2s, offset2s, n, Sintersearch, etc. differentiate the macro coverage and the low power coverage cell reselection strategy, and realize the priority carrier and the low power base station coverage area of the macro base station coverage area.
  • the carrier that the user preferentially camps on is different. For example, the user in the coverage area of the macro base station preferentially resides in the F1 cell, and the user in the coverage area of the low power base station preferentially resides in the F2 cell.
  • the RNC establishes a radio link on the cell where the user camps on the active or passive user of the macro base station and the low-power base station, so that the service load difference between the macro base station and the low-power base station on the same carrier is realized.
  • the macro base station and the low-power base station coverage cell are respectively the same-frequency independent cells.
  • the RNC adopts different carrier priority access policies according to the service type of the UE.
  • both the macro base station and the low power base station are configured with at least two carriers in the same frequency band; then, the service type actively or passively initiated by the user camped by the macro base station and the low power base station is obtained; And a service type that is initiated by the user that is camped on by the low-power base station, and that is configured to establish a different user service on the at least two carriers, and form a differentiated service between the macro base station and the low-power base station on the same carrier. load.
  • the proportion of the user service types covered by the macro base station coverage and the low power base station may be different.
  • the macro base station covers the largest CS service ratio
  • the low power hotspot covers the PS service ratio.
  • FIG. 2b is a diagram of the RNC adopting different carrier priority access policies according to the service type of the UE in the embodiment of the present invention.
  • the RNC performs an access priority policy for different carriers for the active or passively initiated service type of the user camped by the macro base station and the low-power base station, for example:
  • the CS domain service of the user in the coverage area of the macro base station is established in the F1 cell, and the PS domain service of the user in the coverage area of the macro base station is established in the F2 cell;
  • the CS domain service of the user in the coverage area of the low power base station is established in the F2 cell, and the low power base station covers The PS domain service of the user of the zone is established in the F1 cell.
  • the macro cell and the low-power base station coverage cell are combined into one logical cell, and the RNC adopts different carrier priority access policies according to different locations covered by the macro base station coverage of the UE and the low-power base station coverage.
  • both the macro base station and the low power base station are configured with at least two carriers in the same frequency band; then, determining whether the user is in the macro base station coverage area or the low power base station coverage area; according to the determined location of the user
  • the corresponding carrier cell is selected to establish a radio link, so that the user load of the macro base station coverage location in the same cell and the user load of the low power base station coverage location are differentiated.
  • the RNC preferentially establishes a radio link on the F1 carrier cell.
  • the RNC preferentially establishes a radio link on the F2 carrier cell, so that the macro base station in the same cell covers the location.
  • the user load is differentiated from the user load of the low power base station coverage location, reducing co-channel interference in the same cell.
  • the macro cell and the low-power base station coverage cell are combined into one logical cell, and the RNC adopts different according to different locations covered by the macro base station coverage and the low-power base station coverage and different service types.
  • the carrier priority access policy is implemented as follows: First, both the macro base station and the low power base station are configured with at least two carriers in the same frequency band; then, determining whether the user is in the macro base station coverage area or the low power base station coverage area; and acquiring the macro base station Selecting a corresponding carrier cell for the macro base station coverage area user and the low power base station coverage area user according to the determined location of the user and the service type initiated by the user, according to the determined location of the user and the service type initiated by the user.
  • the wireless link is established to differentiate the user load of the coverage location of the macro base station in the same cell from the user load of the coverage location of the low power base station.
  • the CS domain service of the user in the coverage area of the macro base station is established in the F1 cell, and the PS domain service of the user in the coverage area of the macro base station is established in the F2 cell; the CS domain service of the user in the coverage area of the low power base station is established in the F2 cell, and the power is low.
  • the PS domain service of the user in the coverage area of the base station is established in the F1 cell, so that the user load of the coverage location of the macro base station in the same cell is differentiated from the user load of the coverage location of the low power base station, and the co-channel interference in the same cell is reduced.
  • the proportion of the user service type covered by the macro base station coverage and the low power base station may be different.
  • the macro base station covers the largest CS service ratio, and the low power hotspot covers the largest proportion of the PS service.
  • the probability of the user service performance degradation caused by mutual interference when the macro-base station deploys the low-power base station is reduced by the foregoing solution; reducing the uplink-down-down imbalance area between the macro base station and the low-power base station is low.
  • the impact of the low-power base station user service performance caused by the interference of the power base station improves the service experience of the low-power base station user.
  • the low-power base station user of the large number of deployed base stations reduces the uplink interference of the macro base station to bring the macro base station user service performance.
  • the impact of the drop improves the service experience of the macro base station user; and it can also reduce the downlink co-channel interference of the low power base station edge users from the macro base station and the low power base station.
  • an embodiment of the present invention provides an apparatus for deploying a low-power base station in a macro cell, including: a configuration module 201 and a policy execution module 202, where: The configuration module 201 is configured to configure at least two carriers in the same frequency band in both the macro base station and the low power base station; the policy execution module 202, configured to execute the macro base station and the low power base station according to the location and/or service type of the user. Different carrier priority access policies on at least two carriers form a differentiated traffic load on the same carrier of the macro base station and the low power base station.
  • the low-power base station may be a Micro, Pico, or Metro base station.
  • the prior art deploys the same-frequency low-power base station in the macro cell, which causes a large interference between the macro base station and the low-power base station, affecting the macro base station and User service performance of low power base stations.
  • the user service performance of the macro base station and the low power base station is improved.
  • the macro base station and the low power base station both configure at least two carriers in the same frequency band. For the access policy, the macro base station and the low power base station are in the at least two carriers.
  • the access priority policies on the upper part form a difference or the opposite, so that the service load difference between the macro base station and the low power base station on the same carrier is formed, and the probability of the same frequency interference of the low power base station and the macro base station is reduced.
  • different carrier priority access policies of the macro base station and the low power base station on the at least two carriers are performed according to the location of the user and the service type, and the macro base station and the low power base station are formed on the same carrier. Differentiated business load.
  • a variety of ways can be adopted.
  • the application scenarios in which the macro base station and the low power base station coverage cell are respectively the same frequency independent cells, and the macro base station and the low power base station coverage cell are combined into one logical cell are respectively illustrated.
  • the macro base station and the low-power base station coverage cell are respectively intra-frequency independent cells; and in the case that the user does not initiate a service, the RNC performs priority according to the cell camped by the UE.
  • the policy execution module 202 includes: a parameter setting unit 2021, a cell camping unit 2022, and a first service establishing unit 2023, where: the parameter setting unit 2021 is configured to differentially set the macro base station in the system information broadcast.
  • the cell camping unit 2022 is configured to enable the user of the macro base station coverage cell and the low power base station coverage cell to preferentially reside in the corresponding coverage cell according to the cell reselection policy, and the user of the macro base station coverage cell preferentially resides.
  • the carrier is different from the carrier in which the user of the low-power base station coverage cell preferentially camps;
  • the first service establishing unit 2023 is configured to preferentially establish the wireless on the cell where the user camps on the user that the macro base station and the low-power base station camp on.
  • FIG. 2a is a diagram of a priority access policy of a macro base station cell or a low power base station cell in which the RNC resides according to the embodiment of the present invention.
  • the F1 macro cell and the F2 macro cell, the F1 low power cell, and the F2 low power cell are separately set in the system information broadcast SIB11 or 12.
  • the cell reselection related parameters Qhyst2s, offset2s, n, Sintersearch, etc. differentiate the macro coverage and the low power coverage cell reselection strategy, and realize the priority carrier and the low power base station coverage area of the macro base station coverage area.
  • the carrier that the user preferentially camps on is different.
  • the user in the coverage area of the macro base station preferentially resides in the F1 cell
  • the user in the coverage area of the low power base station preferentially resides in the F2 cell.
  • the RNC establishes a radio link on the cell where the user camps on the active or passive user of the macro base station and the low-power base station, so that the service load difference between the macro base station and the low-power base station on the same carrier is realized. .
  • the macro base station and the low-power base station coverage cell are respectively the same-frequency independent cells; for the case where the user initiates the service, the RNC adopts different service types according to the UE. Different carrier priority access policies.
  • the policy execution module 202 includes: a service type obtaining unit 2024 and a second service establishing unit 2025, where: the service type obtaining unit 2024 is configured to acquire a user that is a macro base station and a low power base station, or The passively initiated service type; the second service establishing unit 2025 is configured to select, according to the service type initiated by the macro base station and the user camped by the low power base station, the corresponding camped cell establishment on the at least two carriers.
  • FIG. 2b is a diagram of the RNC adopting different carrier priority access policies according to the service type of the UE in the embodiment of the present invention.
  • the RNC performs an access priority policy for different carriers for the active or passively initiated service type of the user camped by the macro base station and the low-power base station, for example:
  • the CS domain service of the user in the coverage area of the macro base station is established in the F1 cell, and the PS domain service of the user in the coverage area of the macro base station is established in the F2 cell;
  • the CS domain service of the user in the coverage area of the low power base station is established in the F2 cell, and the low power base station covers
  • the PS domain service of the user of the zone is established in the F1 cell.
  • the macro base station and the low-power base station coverage cell are merged into one logical cell; and the RNC covers different locations covered by the low-power base station according to the macro base station coverage of the UE.
  • Different carrier priority access policies are adopted for different service types.
  • the policy execution module 202 includes: a determining unit 2026 and a third service establishing unit 2027, where: the determining unit 2026 is configured to determine whether the user is in a macro base station coverage area or a low power base station coverage area; The service type initiated by the user and the low power base station coverage area actively or passively; the third service establishing unit 2027 is configured to be a macro base station coverage area user and low power according to the determined location of the user and the type of service initiated by the user.
  • the base station coverage area user selects the corresponding carrier cell to establish a radio link, so that the user load of the macro base station coverage location in the same cell and the user load of the low power base station coverage location are differentiated.
  • the CS domain service of the user in the coverage area of the macro base station is established in the F1 cell, and the PS domain service of the user in the coverage area of the macro base station is established in the F2 cell; the CS domain service of the user in the coverage area of the low power base station is established in the F2 cell, and the power is low.
  • the PS domain service of the user in the coverage area of the base station is established in the F1 cell, and the user load forming the coverage location of the macro base station in the same cell is differentiated from the user load of the coverage location of the low power base station, and the co-channel interference in the same cell is reduced.
  • the proportion of the user service type covered by the macro base station coverage and the low power base station may be different.
  • the macro base station covers the largest CS service ratio, and the low power hotspot covers the largest proportion of the PS service.
  • the policy execution module 202 shown in FIG. 4c may be used.
  • the macro cell and the low-power base station coverage cell are merged into one logical cell, and the RNC is based on the macro base where the UE is located.
  • the station covers different locations covered by the low-power base station and adopts different carrier priority access policies.
  • the specific implementation manner is as follows: First, both the macro base station and the low-power base station are configured with at least two carriers in the same frequency band; and then, the user is determined to be in the macro base station.
  • the coverage area is also a low-power base station coverage area; according to the determined location of the user, the macro base station coverage area user and the low-power base station coverage area user respectively select the corresponding carrier cell to establish a radio link, so that the macro-base station in the same cell covers
  • the user load at the location is differentiated from the user load at the location of the low power base station coverage.
  • the RNC preferentially establishes a radio link on the F1 carrier cell.
  • the RNC preferentially establishes a radio link on the F2 carrier cell, so that the macro base station in the same cell covers the location.
  • the user load is differentiated from the user load of the low power base station coverage location, reducing co-channel interference in the same cell.
  • the probability of the user service performance degradation caused by mutual interference when the macro-base station deploys the low-power base station is reduced by the foregoing solution; reducing the uplink-down-down imbalance area between the macro base station and the low-power base station is low.
  • the impact of the low-power base station user service performance caused by the interference of the power base station improves the service experience of the low-power base station user.
  • the low-power base station user of the large number of deployed base stations reduces the uplink interference of the macro base station to bring the macro base station user service performance.
  • the impact of the drop improves the service experience of the macro base station user; and it can also reduce the downlink co-channel interference of the low power base station edge users from the macro base station and the low power base station.
  • an embodiment of the present invention further provides an RNC, including the apparatus described in the foregoing embodiment, and details are not described herein again.
  • a method, a device, and an RNC for deploying a low-power base station in a macro cell where the macro base station and the low-power base station are both configured with at least two carriers in the same frequency band, the macro base station and the low
  • the power base station forms a difference or the opposite on the access priority policy of the at least two carriers in the same frequency band, thereby forming a difference in service load between the macro base station and the low power base station on the same carrier, and reducing the same frequency interference of the low power base station and the macro base station.

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Abstract

本发明涉及一种在宏小区中部署低功率基站的方法、装置及RNC，该方法包括：在宏基站与低功率基站均配置同频段的至少两载波；根据用户所处位置和/或业务类型，执行所述宏基站与低功率基站在所述至少两载波上的不同的载波优先接入策略，形成宏基站与低功率基站在相同载波上的差异化业务负载。本发明通过在宏基站与低功率基站都至少配置有同频段的两载波的情况下，针对接入策略上，宏基站与低功率基站在至少两个同频段载波上的接入优先策略上形成差异或者相反，从而形成宏基站与低功率基站在相同载波上的业务负载形成差异，降低低功率基站与宏基站同频干扰的概率，提升宏基站与低功率基站的用户业务性能。

Description

在宏小区中部署低功率基站的方法、 装置及 RNC 技术领域 本发明涉及无线通讯技术领域，尤其涉及 WCDMA系统中在宏小区中部署低功率 基站的方法、 装置及 RNC (radio network controller, 无线网络控制器）。 背景技术 近几年移动宽带业务发展迅猛， 各种 3GPP制式智能终端 （手机、 数据卡、 iPad 等） 的数据业务井喷式应用直接导致热点地区数据流量呈现爆炸式增长趋势， 因此仅 仅增强传统的宏小区性能很难完全解决问题， 需要在原传统的宏基站网络基础上提供 新的网络解决方案。 目前， 采用在宏小区中部署同频的低功率基站（例如 MiCr0、 Pico 或 Metro 基站） 来解决急速增长的数据流量需求。 但是， 这些低功率基站可能应用在热点或热区覆盖， 部署低功率基站会导致以下 问题：
1 ) 由于宏基站与低功率基站的输出功率相差很大， 而上行接收功率相差并不大， 导致宏基站与低功率基站之间的上行覆盖边界与下行覆盖边界相距较大， 即存在较大 的上下行不平衡区， 该不平衡区的存在会导致不平衡区的用户对低功率基站带来很大 干扰。
2)低功率下行覆盖区 UE的上行功率可能会对宏小区的上行造成干扰， 尤其是宏 小区内较多的小功率基站部署会导致小功率基站的用户对宏小区上行造成更大干扰， 进而影响 UE的上行业务体验， 甚至阻塞宏小区的用户接入。 3 )低功率基站的边缘用户会同时收到来自宏基站与低功率基站的下行信号， 当用 户比较多的时候， 对边缘用户的下行干扰则会增强， 影响边缘用户的下行业务性能。 发明内容 本发明实施例提供一种在宏小区中部署低功率基站的方法、 装置及 RNC， 可以减 少宏基站与低功率基站之间的干扰， 提升宏基站与低功率基站的用户业务性能。 根据本发明的一个方面， 提供了一种在宏小区中部署低功率基站的方法， 包括： 在宏基站与低功率基站均配置同频段的至少两载波； 根据用户所处位置和 /或业务类型， 执行所述宏基站与低功率基站在所述至少两载 波上的不同的载波优先接入策略， 形成宏基站与低功率基站在相同载波上的差异化业 务负载。 优选地， 所述宏基站与低功率基站覆盖小区分别为同频独立小区； 所述根据用户 所处位置， 执行所述宏基站与低功率基站在所述至少两载波上的不同的载波优先接入 策略， 形成宏基站与低功率基站在相同载波上的差异化业务负载的步骤包括： 在系统信息广播中差异化设置宏基站小区和低功率基站小区的小区重选相关参 数， 使宏基站覆盖与低功率基站覆盖的小区重选策略形成差异化； 根据所述小区重选策略， 使宏基站覆盖小区和低功率基站覆盖小区的用户在相应 的覆盖小区优先驻留， 并使宏基站覆盖小区的用户优先驻留的载波与低功率基站覆盖 小区的用户优先驻留的载波不同； 对宏基站与低功率基站驻留的用户发起的业务均优先在用户驻留的小区上建立无 线链路， 使宏基站与低功率基站在相同载波上的业务负载形成差异。 优选地， 所述宏基站与低功率基站覆盖小区分别为同频独立小区； 所述根据用户 业务类型， 执行所述宏基站与低功率基站在所述至少两载波上的不同的载波优先接入 策略， 形成宏基站与低功率基站在相同载波上的差异化业务负载的步骤包括： 获取宏基站与低功率基站驻留的用户主动或被动发起的业务类型； 根据所述宏基站与低功率基站驻留的用户主动或被动发起的业务类型， 在所述至 少两载波上选择相应驻留的小区建立不同的用户业务， 形成宏基站与低功率基站在相 同载波上的差异化业务负载。 优选地， 所述宏基站与低功率基站覆盖小区合并归属为一个逻辑小区； 所述根据 用户所处位置， 执行所述宏基站与低功率基站在所述至少两载波上的不同的载波优先 接入策略， 形成宏基站与低功率基站在相同载波上的差异化业务负载的步骤包括： 判断用户处于宏基站覆盖区还是低功率基站覆盖区； 根据所判断的用户所处的位置， 为宏基站覆盖区用户及低功率基站覆盖区用户分 别选择相应的载波小区建立无线链路， 使同小区内宏基站覆盖位置的用户负载与低功 率基站覆盖位置的用户负载形成差异化。 优选地， 所述宏基站与低功率基站覆盖小区合并归属为一个逻辑小区； 所述根据 用户所处位置及用户业务类型， 执行所述宏基站与低功率基站在所述至少两载波上的 不同的载波优先接入策略， 形成宏基站与低功率基站在相同载波上的差异化业务负载 的步骤包括： 判断用户处于宏基站覆盖区还是低功率基站覆盖区； 并获取宏基站与低功率基站 覆盖区用户主动或被动发起的业务类型； 根据所判断的用户所处的位置以及用户发起的业务类型， 为宏基站覆盖区用户及 低功率基站覆盖区用户分别选择相应的载波小区建立无线链路， 使同小区内宏基站覆 盖位置的用户负载与低功率基站覆盖位置的用户负载形成差异化。 本发明实施例还提供了一种在宏小区中部署低功率基站的装置， 包括： 配置模块， 设置为在宏基站与低功率基站均配置同频段的至少两载波； 策略执行模块， 根据用户所处位置和 /或业务类型， 执行所述宏基站与低功率基站 在所述至少两载波上的不同的载波优先接入策略， 形成宏基站与低功率基站在相同载 波上的差异化业务负载。 优选地， 所述宏基站与低功率基站覆盖小区分别为同频独立小区； 所述策略执行 模块包括- 参数设置单元， 设置为在系统信息广播中差异化设置宏基站小区和低功率基站小 区的小区重选相关参数，使宏基站覆盖与低功率基站覆盖的小区重选策略形成差异化; 小区驻留单元， 设置为根据所述小区重选策略， 使宏基站覆盖小区和低功率基站 覆盖小区的用户在相应的覆盖小区优先驻留， 并使宏基站覆盖小区的用户优先驻留的 载波与低功率基站覆盖小区的用户优先驻留的载波不同； 第一业务建立单元， 设置为对宏基站与低功率基站驻留的用户发起的业务均优先 在用户驻留的小区上建立无线链路， 使宏基站与低功率基站在相同载波上的业务负载 形成差异。 优选地， 所述宏基站与低功率基站覆盖小区分别为同频独立小区； 所述策略执行 模块包括- 业务类型获取单元， 设置为获取宏基站与低功率基站驻留的用户主动或被动发起 的业务类型； 第二业务建立单元， 设置为根据所述宏基站与低功率基站驻留的用户主动或被动 发起的业务类型， 在所述至少两载波上选择相应驻留的小区建立不同的用户业务， 形 成宏基站与低功率基站在相同载波上的差异化业务负载。 优选地， 所述宏基站与低功率基站覆盖小区合并归属为一个逻辑小区； 所述策略 执行模块包括： 判断单元， 设置为判断用户处于宏基站覆盖区还是低功率基站覆盖区； 并获取宏 基站与低功率基站覆盖区用户主动或被动发起的业务类型； 第三业务建立单元， 设置为根据所判断的用户所处的位置以及用户发起的业务类 型， 为宏基站覆盖区用户及低功率基站覆盖区用户分别选择相应的载波小区建立无线 链路， 使同小区内宏基站覆盖位置的用户负载与低功率基站覆盖位置的用户负载形成 差异化。
本发明实施例还提供了一种 RNC， 该 RNC包括如上所述的在宏小区中部署低功 率基站的装置。
本发明实施例提出的一种在宏小区中部署低功率基站的方法、 装置及 RNC， 通过 在宏基站与低功率基站都至少配置有同频段的两载波的情况下， 针对接入策略上， 宏 基站与低功率基站在至少两个同频段载波上的接入优先策略上形成差异或者相反， 从 而形成宏基站与低功率基站在相同载波上的业务负载形成差异， 降低低功率基站与宏 基站同频干扰的概率， 提升宏基站与低功率基站的用户业务性能。 附图说明 图 1是根据本发明实施例在宏小区中部署低功率基站的方法流程示意图； 图 2a是本发明实施例中 RNC根据 UE所驻留的宏基站小区或低功率基站小区优 先接入策略示意图； 图 2b是本发明实施例中 RNC根据 UE的业务类型不同采用不同载波优先接入策 略示意图； 图 3是本发明在宏小区中部署低功率基站的装置一实施例的结构示意图; 图 4a是本发明在宏小区中部署低功率基站的装置一实施例中策略执行模块的一 种结构示意图； 图 4b 是本发明在宏小区中部署低功率基站的装置一实施例中策略执行模块的另 一种结构示意图； 图 4c 是本发明在宏小区中部署低功率基站的装置一实施例中策略执行模块的再 一种结构示意图。
为了使本发明的技术方案更加清楚、 明了， 下面将结合附图作进一步详述。 具体实施方式 本发明实施例的解决方案主要是： 在宏基站与低功率基站都至少配置有同频段的 两载波的情况下， 针对接入策略上， 宏基站与低功率基站在至少两个同频段载波上的 接入优先策略上形成差异或者相反， 从而形成宏基站与低功率基站在相同载波上的业 务负载形成差异， 降低低功率基站与宏基站同频干扰的概率， 提升宏基站与低功率基 站的用户业务性能。
如图 1所示，本发明一实施例提出一种在宏小区中部署低功率基站的方法，包括: 步骤 S101， 在宏基站与低功率基站均配置同频段的至少两载波； 步骤 S102，根据用户所处位置和 /或业务类型，执行所述宏基站与低功率基站在所 述至少两载波上的不同的载波优先接入策略， 形成宏基站与低功率基站在相同载波上 的差异化业务负载。 其中， 低功率基站可以是 Micro、 Pico或 Metro 基站等， 由于现有技术在宏小区 中部署同频的低功率基站， 会导致宏基站与低功率基站之间产生很大干扰， 影响宏基 站与低功率基站的用户业务性能。 本实施例为提升宏基站与低功率基站的用户业务性能， 在宏基站与低功率基站都 至少配置同频段的两载波， 针对接入策略上， 宏基站与低功率基站在上述至少两个载 波上的接入优先策略形成差异或者相反， 从而形成宏基站与低功率基站在相同载波上 的业务负载形成差异， 降低低功率基站与宏基站同频干扰的概率。 具体地， 本实施例可以根据用户所处位置以及业务类型， 执行宏基站与低功率基 站在所述至少两载波上的不同的载波优先接入策略， 形成宏基站与低功率基站在相同 载波上的差异化业务负载。 在具体实现宏基站与低功率基站在相同载波上的业务负载形成差异目标上， 可以 采用多种方式。 本实施例以宏基站与低功率基站覆盖小区分别为同频独立小区， 以及 宏基站与低功率基站覆盖小区合并归属为一个逻辑小区两种应用场景分别进行举例说 明。 作为本实施例的一种实施方式， 宏基站与低功率基站覆盖小区分别为同频独立小 区， 针对用户未发起业务的情形， RNC根据 UE所驻留小区优先进行接入， 具体实现 方式如下： 首先， 在宏基站与低功率基站都至少配置有同频段的两载波； 然后， RNC在系统信息广播中差异化设置宏基站小区和低功率基站小区的小区重 选相关参数， 使宏基站覆盖与低功率基站覆盖的小区重选策略形成差异化； 根据上述 小区重选策略， 使宏基站覆盖小区和低功率基站覆盖小区的用户在相应的覆盖小区优 先驻留， 并使宏基站覆盖小区的用户优先驻留的载波与低功率基站覆盖小区的用户优 先驻留的载波不同； 最后， 对宏基站与低功率基站驻留的用户发起的业务均优先在用户驻留的小区上 建立无线链路， 使宏基站与低功率基站在相同载波上的业务负载形成差异。 更为具体地， 如图 2a所示， 图 2a是本发明实施例中 RNC根据 UE所驻留的宏基 站小区或低功率基站小区优先接入策略图。 在宏基站与低功率基站都至少配置有同频段的两载波的情况下， 通过在系统信息 广播 SIB11或 12中差异化设置 F1宏小区和 F2宏小区、 F1低功率小区和 F2低功率小 区的小区重选相关参数 Qhyst2s， offset2s,n， Sintersearch等， 让宏覆盖与低功率覆盖 的小区重选策略形成差异化， 实现让宏基站覆盖区的用户优先驻留的载波与低功率基 站覆盖区的用户优先驻留的载波不同， 例如： 让宏基站覆盖区的用户优先驻留在 F1 小区， 低功率基站覆盖区的用户优先驻留在 F2小区。
RNC 针对宏基站与低功率基站驻留的用户主动或被动发起的业务都优先在用户 驻留的小区上建立无线链路， 由此实现宏基站与低功率基站在相同载波上的业务负载 形成差异。 作为本实施例的另一种实施方式， 宏基站与低功率基站覆盖小区分别为同频独立 小区， 针对用户以发起业务的情形， RNC根据 UE的业务类型不同采用不同的载波优 先接入策略， 具体实现方式如下： 首先， 在宏基站与低功率基站都至少配置有同频段的两载波； 然后， 获取宏基站与低功率基站驻留的用户主动或被动发起的业务类型； 根据所述宏基站与低功率基站驻留的用户主动或被动发起的业务类型， 在所述至 少两载波上选择相应驻留的小区建立不同的用户业务， 形成宏基站与低功率基站在相 同载波上的差异化业务负载。 本实施方式是考虑到宏基站覆盖与低功率基站覆盖的用户业务类型所占比例可能 存在差异， 例如宏基站覆盖 CS业务比例最大， 低功率热点覆盖 PS业务比例最大。 更为具体地， 如图 2b所示， 图 2b是本发明实施例中 RNC根据 UE的业务类型不 同采用不同载波优先接入策略图。 在宏基站与低功率基站都至少配置有同频段的两载波的情况下， RNC针对宏基站 与低功率基站驻留的用户主动或被动发起的业务类型执行不同载波的接入优先策略， 例如： 宏基站覆盖区的用户的 CS域业务建立在 F1小区， 宏基站覆盖区的用户的 PS 域业务建立在 F2小区； 低功率基站覆盖区的用户的 CS域业务建立在 F2小区， 低功 率基站覆盖区的用户的 PS域业务建立在 F1小区。 作为本实施例的再一种实施方式， 针对宏基站与低功率基站覆盖小区合并归属为 一个逻辑小区， RNC根据 UE所在宏基站覆盖与低功率基站覆盖的不同位置而采用不 同载波优先接入策略， 具体实现方式如下： 首先， 在宏基站与低功率基站都至少配置有同频段的两载波； 然后， 判断用户处于宏基站覆盖区还是低功率基站覆盖区； 根据所判断的用户所处的位置， 为宏基站覆盖区用户及低功率基站覆盖区用户分 别选择相应的载波小区建立无线链路， 使同小区内宏基站覆盖位置的用户负载与低功 率基站覆盖位置的用户负载形成差异化。 例如： 针对宏基站覆盖区用户， RNC优先在 F1载波小区上建立无线链路， 针对 低功率基站覆盖区用户， RNC优先在 F2载波小区上建立无线链路， 使同小区内宏基 站覆盖位置的用户负载与低功率基站覆盖位置的用户负载形成差异化， 减少同一个小 区内的同频干扰。 作为本实施例的又一种实施方式， 针对宏基站与低功率基站覆盖小区合并归属为 一个逻辑小区， RNC根据 UE所在宏基站覆盖与低功率基站覆盖的不同位置和不同的 业务类型而采用不同载波优先接入策略， 具体实现方式如下： 首先， 在宏基站与低功率基站都至少配置有同频段的两载波； 然后， 判断用户处于宏基站覆盖区还是低功率基站覆盖区； 并获取宏基站与低功 率基站覆盖区用户主动或被动发起的业务类型； 根据所判断的用户所处的位置以及用户发起的业务类型， 为宏基站覆盖区用户及 低功率基站覆盖区用户分别选择相应的载波小区建立无线链路， 使同小区内宏基站覆 盖位置的用户负载与低功率基站覆盖位置的用户负载形成差异化。 例如： 宏基站覆盖区的用户的 CS域业务建立在 F1小区， 宏基站覆盖区的用户的 PS域业务建立在 F2小区； 低功率基站覆盖区的用户的 CS域业务建立在 F2小区， 低 功率基站覆盖区的用户的 PS域业务建立在 F1小区， 使同小区内宏基站覆盖位置的用 户负载与低功率基站覆盖位置的用户负载形成差异化，减少同一个小区内的同频干扰。 本实施方式同样是考虑到宏基站覆盖与低功率基站覆盖的用户业务类型所占比例 可能存在差异，例如宏基站覆盖 CS业务比例最大，低功率热点覆盖 PS业务比例最大。 相比现有技术， 本实施例通过上述方案， 减少宏微基站部署低功率基站时相互干 扰导致用户业务性能下降的概率； 减少宏基站与低功率基站之间的上下行不平衡区用 户对低功率基站的干扰带来的低功率基站用户业务性能下降的影响， 提升低功率基站 用户的业务体验； 此外， 还减少大量部署的低功率基站用户对宏基站的上行干扰带来 宏基站用户业务性能下降的影响， 提升宏基站用户的业务体验； 而且还可以减少低功 率基站边缘用户来自宏基站与低功率基站的下行同频干扰。
如图 3所示，本发明一实施例提出一种在宏小区中部署低功率基站的装置，包括: 配置模块 201以及策略执行模块 202， 其中： 配置模块 201， 设置为在宏基站与低功率基站均配置同频段的至少两载波; 策略执行模块 202， 根据用户所处位置和 /或业务类型， 执行所述宏基站与低功率 基站在所述至少两载波上的不同的载波优先接入策略， 形成宏基站与低功率基站在相 同载波上的差异化业务负载。
其中， 低功率基站可以是 Micro、 Pico或 Metro 基站等， 由于现有技术在宏小区 中部署同频的低功率基站， 会导致宏基站与低功率基站之间产生很大干扰， 影响宏基 站与低功率基站的用户业务性能。 本实施例为提升宏基站与低功率基站的用户业务性能， 在宏基站与低功率基站都 至少配置同频段的两载波， 针对接入策略上， 宏基站与低功率基站在上述至少两个载 波上的接入优先策略形成差异或者相反， 从而形成宏基站与低功率基站在相同载波上 的业务负载形成差异， 降低低功率基站与宏基站同频干扰的概率。 具体地， 本实施例可以根据用户所处位置以及业务类型， 执行宏基站与低功率基 站在所述至少两载波上的不同的载波优先接入策略， 形成宏基站与低功率基站在相同 载波上的差异化业务负载。 在具体实现宏基站与低功率基站在相同载波上的业务负载形成差异目标上， 可以 采用多种方式。 本实施例以宏基站与低功率基站覆盖小区分别为同频独立小区， 以及 宏基站与低功率基站覆盖小区合并归属为一个逻辑小区两种应用场景分别进行举例说 明。 如图 4a所示， 作为本实施例的一种实施方式， 所述宏基站与低功率基站覆盖小区 分别为同频独立小区； 针对用户未发起业务的情形， RNC根据 UE所驻留小区优先进 行接入。 本实施方式中， 所述策略执行模块 202包括： 参数设置单元 2021、 小区驻留单元 2022及第一业务建立单元 2023， 其中： 参数设置单元 2021， 设置为在系统信息广播中差异化设置宏基站小区和低功率基 站小区的小区重选相关参数， 使宏基站覆盖与低功率基站覆盖的小区重选策略形成差 异化； 小区驻留单元 2022， 设置为根据所述小区重选策略， 使宏基站覆盖小区和低功率 基站覆盖小区的用户在相应的覆盖小区优先驻留， 并使宏基站覆盖小区的用户优先驻 留的载波与低功率基站覆盖小区的用户优先驻留的载波不同； 第一业务建立单元 2023， 设置为对宏基站与低功率基站驻留的用户发起的业务均 优先在用户驻留的小区上建立无线链路， 使宏基站与低功率基站在相同载波上的业务 负载形成差异。 更为具体地， 如图 2a所示， 图 2a是本发明实施例中 RNC根据 UE所驻留的宏基 站小区或低功率基站小区优先接入策略图。 在宏基站与低功率基站都至少配置有同频段的两载波的情况下， 通过在系统信息 广播 SIB11或 12中差异化设置 F1宏小区和 F2宏小区、 F1低功率小区和 F2低功率小 区的小区重选相关参数 Qhyst2s， offset2s,n， Sintersearch等， 让宏覆盖与低功率覆盖 的小区重选策略形成差异化， 实现让宏基站覆盖区的用户优先驻留的载波与低功率基 站覆盖区的用户优先驻留的载波不同， 例如： 让宏基站覆盖区的用户优先驻留在 F1 小区， 低功率基站覆盖区的用户优先驻留在 F2小区。 RNC 针对宏基站与低功率基站驻留的用户主动或被动发起的业务都优先在用户 驻留的小区上建立无线链路， 由此实现宏基站与低功率基站在相同载波上的业务负载 形成差异。
如图 4b所示， 作为本实施例的另一种实施方式，所述宏基站与低功率基站覆盖小 区分别为同频独立小区； 针对用户以发起业务的情形， RNC根据 UE的业务类型不同 采用不同的载波优先接入策略。 在本实施方式中，所述策略执行模块 202包括： 业务类型获取单元 2024及第二业 务建立单元 2025， 其中： 业务类型获取单元 2024， 设置为获取宏基站与低功率基站驻留的用户主动或被动 发起的业务类型； 第二业务建立单元 2025， 设置为根据所述宏基站与低功率基站驻留的用户主动或 被动发起的业务类型，在所述至少两载波上选择相应驻留的小区建立不同的用户业务， 形成宏基站与低功率基站在相同载波上的差异化业务负载。 本实施方式是考虑到宏基站覆盖与低功率基站覆盖的用户业务类型所占比例可能 存在差异， 例如宏基站覆盖 CS业务比例最大， 低功率热点覆盖 PS业务比例最大。 更为具体地， 如图 2b所示， 图 2b是本发明实施例中 RNC根据 UE的业务类型不 同采用不同载波优先接入策略图。 在宏基站与低功率基站都至少配置有同频段的两载波的情况下， RNC针对宏基站 与低功率基站驻留的用户主动或被动发起的业务类型执行不同载波的接入优先策略， 例如： 宏基站覆盖区的用户的 CS域业务建立在 F1小区， 宏基站覆盖区的用户的 PS 域业务建立在 F2小区； 低功率基站覆盖区的用户的 CS域业务建立在 F2小区， 低功 率基站覆盖区的用户的 PS域业务建立在 F1小区。
如图 4c所示， 作为本实施例的再一种实施方式， 所述宏基站与低功率基站覆盖小 区合并归属为一个逻辑小区； RNC根据 UE所在宏基站覆盖与低功率基站覆盖的不同 位置和不同的业务类型而采用不同载波优先接入策略。 在本实施方式中，所述策略执行模块 202包括： 判断单元 2026及第三业务建立单 元 2027， 其中： 判断单元 2026， 设置为判断用户处于宏基站覆盖区还是低功率基站覆盖区； 并获 取宏基站与低功率基站覆盖区用户主动或被动发起的业务类型； 第三业务建立单元 2027， 设置为根据所判断的用户所处的位置以及用户发起的业 务类型， 为宏基站覆盖区用户及低功率基站覆盖区用户分别选择相应的载波小区建立 无线链路， 使同小区内宏基站覆盖位置的用户负载与低功率基站覆盖位置的用户负载 形成差异化。 例如： 宏基站覆盖区的用户的 CS域业务建立在 F1小区， 宏基站覆盖区的用户的 PS域业务建立在 F2小区； 低功率基站覆盖区的用户的 CS域业务建立在 F2小区， 低 功率基站覆盖区的用户的 PS域业务建立在 F1小区， 形成同小区内宏基站覆盖位置的 用户负载与低功率基站覆盖位置的用户负载形成差异化， 减少同一个小区内的同频干 扰。 本实施方式同样是考虑到宏基站覆盖与低功率基站覆盖的用户业务类型所占比例 可能存在差异，例如宏基站覆盖 CS业务比例最大，低功率热点覆盖 PS业务比例最大。 作为本实施例的又一种实施方式， 可以采用图 4c所示的策略执行模块 202， 在此 实施方式中， 针对宏基站与低功率基站覆盖小区合并归属为一个逻辑小区， RNC根据 UE所在宏基站覆盖与低功率基站覆盖的不同位置而采用不同载波优先接入策略，具体 实现方式如下： 首先， 在宏基站与低功率基站都至少配置有同频段的两载波； 然后， 判断用户处于宏基站覆盖区还是低功率基站覆盖区； 根据所判断的用户所处的位置， 为宏基站覆盖区用户及低功率基站覆盖区用户分 别选择相应的载波小区建立无线链路， 使同小区内宏基站覆盖位置的用户负载与低功 率基站覆盖位置的用户负载形成差异化。 例如： 针对宏基站覆盖区用户， RNC优先在 F1载波小区上建立无线链路， 针对 低功率基站覆盖区用户， RNC优先在 F2载波小区上建立无线链路， 使同小区内宏基 站覆盖位置的用户负载与低功率基站覆盖位置的用户负载形成差异化， 减少同一个小 区内的同频干扰。
相比现有技术， 本实施例通过上述方案， 减少宏微基站部署低功率基站时相互干 扰导致用户业务性能下降的概率； 减少宏基站与低功率基站之间的上下行不平衡区用 户对低功率基站的干扰带来的低功率基站用户业务性能下降的影响， 提升低功率基站 用户的业务体验； 此外， 还减少大量部署的低功率基站用户对宏基站的上行干扰带来 宏基站用户业务性能下降的影响， 提升宏基站用户的业务体验； 而且还可以减少低功 率基站边缘用户来自宏基站与低功率基站的下行同频干扰。
此外， 本发明一实施例还提出一种 RNC， 包括上述实施例所述的装置， 在此不再 赘述。 本发明实施例在宏小区中部署低功率基站的方法、 装置及 RNC， 通过在宏基站与 低功率基站都至少配置有同频段的两载波的情况下， 针对接入策略上， 宏基站与低功 率基站在至少两个同频段载波上的接入优先策略上形成差异或者相反， 从而形成宏基 站与低功率基站在相同载波上的业务负载形成差异， 降低低功率基站与宏基站同频干 扰的概率， 提升宏基站与低功率基站的用户业务性能。 以上所述仅为本发明的优选实施例， 并非因此限制本发明的专利范围， 凡是利用 本发明说明书及附图内容所作的等效结构或流程变换， 或直接或间接运用在其它相关 的技术领域， 均同理包括在本发明的专利保护范围内。

Claims

权 利 要 求 书 、 一种在宏小区中部署低功率基站的方法， 包括：
在宏基站与低功率基站均配置同频段的至少两载波；
根据用户所处位置和 /或业务类型，执行所述宏基站与低功率基站在所述至 少两载波上的不同的载波优先接入策略， 形成宏基站与低功率基站在相同载波 上的差异化业务负载。 、 根据权利要求 1所述的方法， 其中， 所述宏基站与低功率基站覆盖小区分别为 同频独立小区； 所述根据用户所处位置， 执行所述宏基站与低功率基站在所述 至少两载波上的不同的载波优先接入策略， 形成宏基站与低功率基站在相同载 波上的差异化业务负载的步骤包括- 在系统信息广播中差异化设置宏基站小区和低功率基站小区的小区重选相 关参数， 使宏基站覆盖与低功率基站覆盖的小区重选策略形成差异化；
根据所述小区重选策略， 使宏基站覆盖小区和低功率基站覆盖小区的用户 在相应的覆盖小区优先驻留， 并使宏基站覆盖小区的用户优先驻留的载波与低 功率基站覆盖小区的用户优先驻留的载波不同；
对宏基站与低功率基站驻留的用户发起的业务均优先在用户驻留的小区上 建立无线链路， 使宏基站与低功率基站在相同载波上的业务负载形成差异。 、 根据权利要求 1所述的方法， 其中， 所述宏基站与低功率基站覆盖小区分别为 同频独立小区； 所述根据用户业务类型， 执行所述宏基站与低功率基站在所述 至少两载波上的不同的载波优先接入策略， 形成宏基站与低功率基站在相同载 波上的差异化业务负载的步骤包括- 获取宏基站与低功率基站驻留的用户主动或被动发起的业务类型； 根据所述宏基站与低功率基站驻留的用户主动或被动发起的业务类型， 在 所述至少两载波上选择相应驻留的小区建立不同的用户业务， 形成宏基站与低 功率基站在相同载波上的差异化业务负载。 、 根据权利要求 1所述的方法， 其中， 所述宏基站与低功率基站覆盖小区合并归 属为一个逻辑小区； 所述根据用户所处位置， 执行所述宏基站与低功率基站在 所述至少两载波上的不同的载波优先接入策略， 形成宏基站与低功率基站在相 同载波上的差异化业务负载的步骤包括- 判断用户处于宏基站覆盖区还是低功率基站覆盖区；
根据所判断的用户所处的位置， 为宏基站覆盖区用户及低功率基站覆盖区 用户分别选择相应的载波小区建立无线链路， 使同小区内宏基站覆盖位置的用 户负载与低功率基站覆盖位置的用户负载形成差异化。 、 根据权利要求 1所述的方法， 其中， 所述宏基站与低功率基站覆盖小区合并归 属为一个逻辑小区； 所述根据用户所处位置及用户业务类型， 执行所述宏基站 与低功率基站在所述至少两载波上的不同的载波优先接入策略， 形成宏基站与 低功率基站在相同载波上的差异化业务负载的步骤包括：
判断用户处于宏基站覆盖区还是低功率基站覆盖区； 并获取宏基站与低功 率基站覆盖区用户主动或被动发起的业务类型；
根据所判断的用户所处的位置以及用户发起的业务类型， 为宏基站覆盖区 用户及低功率基站覆盖区用户分别选择相应的载波小区建立无线链路， 使同小 区内宏基站覆盖位置的用户负载与低功率基站覆盖位置的用户负载形成差异 化。 、 一种在宏小区中部署低功率基站的装置， 包括：
配置模块， 设置为在宏基站与低功率基站均配置同频段的至少两载波； 策略执行模块， 设置为根据用户所处位置和 /或业务类型， 执行所述宏基站 与低功率基站在所述至少两载波上的不同的载波优先接入策略， 形成宏基站与 低功率基站在相同载波上的差异化业务负载。 、 根据权利要求 6所述的装置， 其中， 所述宏基站与低功率基站覆盖小区分别为 同频独立小区； 所述策略执行模块包括：
参数设置单元， 设置为在系统信息广播中差异化设置宏基站小区和低功率 基站小区的小区重选相关参数， 使宏基站覆盖与低功率基站覆盖的小区重选策 略形成差异化；
小区驻留单元， 设置为根据所述小区重选策略， 使宏基站覆盖小区和低功 率基站覆盖小区的用户在相应的覆盖小区优先驻留， 并使宏基站覆盖小区的用 户优先驻留的载波与低功率基站覆盖小区的用户优先驻留的载波不同； 第一业务建立单元， 设置为对宏基站与低功率基站驻留的用户发起的业务 均优先在用户驻留的小区上建立无线链路， 使宏基站与低功率基站在相同载波 上的业务负载形成差异。 、 根据权利要求 6所述的装置， 其中， 所述宏基站与低功率基站覆盖小区分别为 同频独立小区； 所述策略执行模块包括：
业务类型获取单元， 设置为获取宏基站与低功率基站驻留的用户主动或被 动发起的业务类型；
第二业务建立单元， 设置为根据所述宏基站与低功率基站驻留的用户主动 或被动发起的业务类型， 在所述至少两载波上选择相应驻留的小区建立不同的 用户业务， 形成宏基站与低功率基站在相同载波上的差异化业务负载。 、 根据权利要求 6所述的装置， 其中， 所述宏基站与低功率基站覆盖小区合并归 属为一个逻辑小区； 所述策略执行模块包括：
判断单元， 设置为判断用户处于宏基站覆盖区还是低功率基站覆盖区； 并 获取宏基站与低功率基站覆盖区；
第三业务建立单元， 设置为根据所判断的用户所处的位置， 为宏基站覆盖 区用户及低功率基站覆盖区用户分别选择相应的载波小区建立无线链路， 使同 小区内宏基站覆盖位置的用户负载与低功率基站覆盖位置的用户负载形成差异 化。 0、 根据权利要求 9所述的装置， 其中，
所述判断单元， 还设置为判断用户处于宏基站覆盖区还是低功率基站覆盖 区； 并获取宏基站与低功率基站覆盖区用户主动或被动发起的业务类型； 所述第三业务建立单元， 还设置为根据所判断的用户所处的位置以及用户 发起的业务类型， 为宏基站覆盖区用户及低功率基站覆盖区用户分别选择相应 的载波小区建立无线链路， 使同小区内宏基站覆盖位置的用户负载与低功率基 站覆盖位置的用户负载形成差异化。 1、 一种 RNC， 包括权利要求 6-10中任一项所述的装置。
PCT/CN2013/080356 2013-05-31 2013-07-29 在宏小区中部署低功率基站的方法、装置及rnc WO2013174350A2 (zh)

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