CN103428727B - The detection method and system of a kind of UE close to micro-base station - Google Patents
The detection method and system of a kind of UE close to micro-base station Download PDFInfo
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- 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
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Abstract
The present invention discloses a kind of UE close to the detection method and system of micro-base station, and this method includes：Micro-base station intercepts the uplink characteristic information of UE or uplink characteristic information is sent to micro-base station by macro base station notice UE；Whether micro-base station judges the UE close to itself according to the uplink characteristic information of UE, and the information that will be close to the UE of itself is sent to macro base station；Or, the testing result obtained according to the uplink characteristic information of UE is sent to macro base station by micro-base station, whether macro base station judges UE close to micro-base station according to the testing result.According to the technique and scheme of the present invention, macro base station can know the UE close to micro-base station in time, to initiate handover decisions in time.
Description
Technical Field
The present invention relates to mobile communication technologies, and in particular, to a method and a system for detecting UE approaching a micro base station.
Background
With the development of mobile communication and information technology, the demand of users for data services is increasing. In the current mainstream mobile communication Network, the 2 nd generation/2.5 th generation mobile communication Network adopting Global System For mobile communication/General Packet Radio Service (GSM) or the 3 rd generation mobile communication Network adopting Universal Mobile Telecommunications System (UMTS) is a Homogeneous Network (Homogeneous Network) uniformly planned and deployed by an operator. Once a homogeneous network is deployed, the capacity of the network within a certain area is fixed. In order to meet the increasing data Service requirements of blowout, operators need to deploy more homogeneous network sites, on one hand, it is expensive to deploy and maintain the traditional homogeneous macro network sites, and on the other hand, even if a large number of new sites are deployed on the basis of the original network, once each site is deployed, the network capacity is fixed, so that the operator cannot adapt to the requirements of local area Service load changes and the requirements of Quality of Service (QoS) changes in the network.
In order to meet the increasing data service demand of users, the 4 th generation mobile communication deploys some low Power nodes (LPNs, low Power nodes) on the basis of the original homogeneous network, where the low Power nodes may be low Power micro base stations (picoenbs), home base stations (henbs/CSGs/femtos), Relay nodes (RNs, Relay nodes), and the like, and because the low Power nodes have Lower transmission Power, compared with macro cells (macro cells) covered by base stations (e.g., enbs, NBs, and the like) deployed uniformly by traditional operators, the cells covered by the low Power nodes may be collectively referred to as micro cells (micro cells) or small cells (small cells) or low Power Node cells (LPN cells). The low power node has the advantage of flexible deployment, for example, can be deployed in a hot spot area to increase coverage of the hot spot area, fig. 1 is a schematic diagram of hot spot coverage of the low power node in the prior art, and the low power node in fig. 1 can be flexibly deployed in the hot spot area according to the number of users to increase network capacity of the hot spot area and reduce load of a macro base station in the hot spot area.
The deployment of the low-power nodes can enhance the cell coverage on the basis of the traditional macro base station, increase the network capacity, share the load of the macro base station and enhance the service quality of a specific user. However, since the low power node has low transmission power, the cell coverage area of the low power node is much smaller than that of a traditional macro base station, and the low power node may also be deployed by using the same frequency as or a different frequency from that of the macro base station.
When User Equipment (UE) accesses near the edge of the coverage of the micro base station or moves to the edge of the coverage of the micro base station when the macro base station accesses, the micro base station needs to be discovered in time, the measurement of the pilot frequency needs to be started in time, and the macro base station can initiate a handover decision only when the UE reports a measurement report to the macro base station. If the method for opening the pilot frequency measurement in the traditional homogeneous network is adopted, namely as shown in fig. 1, the pilot frequency measurement is opened when the signal of the macro base station is degraded, and if the micro base station is deployed at the central position of a cell in the heterogeneous network, the method for opening the pilot frequency measurement in the traditional homogeneous network cannot achieve the effect and cannot open the pilot frequency measurement; if pilot frequency measurement is started all the time, the traditional method is relatively power-consuming for the UE, and if the measurement interval needs to be opened, the flow is also influenced, so how the macro base station knows that the UE is close to the micro base station and the power consumption expense of the UE does not need to be increased urgently.
Disclosure of Invention
In view of this, the main objective of the present invention is to provide a method and a system for detecting UE approaching a micro base station, where a macro base station can timely acquire the UE approaching the micro base station and timely initiate a handover decision.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
the invention provides a method for detecting UE approaching a micro base station, which comprises the following steps:
the micro base station monitors uplink characteristic information of the UE, or the macro base station informs the UE to send the uplink characteristic information to the micro base station;
the micro base station judges whether the UE is close to the micro base station according to the uplink characteristic information of the UE, and sends the information of the UE close to the micro base station to the macro base station; or the micro base station sends a detection result obtained according to the uplink characteristic information of the UE to the macro base station, and the macro base station judges whether the UE is close to the micro base station or not according to the detection result.
In the above method, before the micro base station monitors uplink characteristic information of the UE, the method further includes: and the macro base station sends the uplink characteristic information of the UE to the micro base station.
In the above method, the macro base station sending the uplink feature information of the UE to the micro base station is:
the macro base station judges the UE which is possibly close to the micro base station according to the position tracking information of the UE in the connection state and the position of the micro base station, and sends uplink characteristic information of the UE which is possibly close to the micro base station through an S1 interface or an X2 interface;
the uplink characteristic information of the UE includes an ID of the UE, and further includes a Sounding Reference Signal (SRS) configuration, or a Random Access (RA) configuration, or a Channel Quality Indicator (CQI) configuration.
In the above method, the monitoring, by the micro base station, of the uplink characteristic information of the UE is as follows:
after receiving uplink characteristic information of the UE sent by the macro base station, the micro base station switches to the frequency point of the macro base station to monitor the uplink characteristic information of the UE corresponding to the ID of the UE in the uplink characteristic information.
In the above method, the step of the macro base station informing the UE of sending the uplink feature information to the micro base station is:
the macro base station sends the characteristic information of the micro base station to UE (user equipment) which is possibly close to the micro base station through broadcasting or special signaling, and informs the UE of switching to a frequency point where the micro base station is located;
the UE actively sends the uplink characteristic information of the UE to a micro base station close to the UE; the characteristic information of the micro base station comprises Physical Cell Identity (PCI) and frequency point information, and also comprises position information of the micro base station.
In the above method, the micro base station, according to the uplink characteristic information of the UE, determining whether the UE approaches itself is:
the micro base station performs correlation operation on the uplink characteristic information of the UE sensed by the micro base station or the SRS, RA or CQI in the uplink characteristic information actively sent by the UE and the uplink characteristic information of the UE received from the macro base station, if the operation result is correlated, the micro base station is indicated that the UE is close to the micro base station, and if the operation result is uncorrelated, the micro base station is indicated that the UE is not close to the micro base station.
In the above method, the sending the information of the UE close to the macro base station includes:
and the micro base station transmits the information of the UE close to the micro base station determined according to the uplink characteristic information of the UE to the macro base station through an S1 interface or an X2 interface and by utilizing the configuration updating message of the eNB or the resource state report initiating message or the newly defined message.
In the method, the micro base station sends a detection result obtained according to the uplink characteristic information of the UE to the macro base station, and the macro base station judges whether the UE is close to the micro base station according to the detection result:
after performing relevant operation on SRS, RA or CQI in the uplink characteristic information of the UE and the uplink characteristic information of the UE received from the macro base station, the micro base station transmits an operation result serving as a detection result to the macro base station through an S1 interface or an X2 interface, and by utilizing an eNB configuration update message or a resource state report initiating message or a newly defined message;
and the macro base station judges whether the UE is close to the micro base station or not according to the detection result, if the detection result is relevant, the UE is close to the micro base station, and if the detection result is irrelevant, the UE is not close to the micro base station.
The invention also provides a system for detecting the UE approaching the micro base station, which comprises: a micro base station, UE and a macro base station; wherein,
the micro base station is used for monitoring the uplink characteristic information of the UE;
the micro base station is also used for judging whether the UE is close to the micro base station according to the uplink characteristic information of the UE and sending the information of the UE close to the micro base station to the macro base station; or, the macro base station is further configured to send a detection result obtained according to the uplink characteristic information of the UE to the macro base station;
and the macro base station is used for judging whether the UE is close to the micro base station according to the detection result when receiving the detection result.
In the system, the macro base station is further configured to send the uplink feature information of the UE to the micro base station before the micro base station listens to the uplink feature information of the UE.
The invention also provides a system for detecting the UE approaching the micro base station, which comprises: a macro base station, UE, a micro base station; wherein,
the macro base station is used for informing the UE to send the uplink characteristic information to the micro base station;
the micro base station is used for judging whether the UE is close to the micro base station according to the uplink characteristic information of the UE and sending the information of the UE close to the micro base station to the macro base station; or, the macro base station is used for sending a detection result obtained according to the uplink characteristic information of the UE;
and the macro base station is used for judging whether the UE is close to the micro base station according to the detection result when receiving the detection result.
In the system, the macro base station is further configured to send the uplink feature information of the UE to the micro base station before the micro base station listens to the uplink feature information of the UE.
According to the detection method and system for the UE approaching the micro base station, the micro base station monitors the uplink characteristic information of the UE, or the macro base station informs the UE to send the uplink characteristic information to the micro base station; the micro base station judges whether the UE is close to the micro base station according to the uplink characteristic information of the UE, and sends the information of the UE close to the micro base station to the macro base station; or the micro base station sends a detection result obtained according to the uplink characteristic information of the UE to the macro base station, and the macro base station judges whether the UE is close to the micro base station according to the detection result, so that the macro base station can timely know the UE close to the micro base station and timely initiate a switching decision; meanwhile, the probability of UE (user equipment) detecting the micro base station is improved, the power consumption of the UE is reduced, the design of the UE does not need to be changed, and the implementation complexity of the UE is not increased.
Drawings
FIG. 1 is a diagram illustrating hot spot coverage of low power nodes in the prior art;
FIG. 2 is a flow chart illustrating a method for detecting UE approaching a micro base station according to the present invention;
FIG. 3 is a flowchart illustrating a first embodiment of a method for detecting UE approaching a micro base station according to the present invention;
FIG. 4 is a flowchart illustrating a second embodiment of a method for detecting UE approaching a micro base station according to the present invention;
fig. 5 is a schematic structural diagram of a system for detecting UE approaching a micro base station according to the present invention.
Detailed Description
The basic idea of the invention is: the micro base station monitors uplink characteristic information of the UE, or the macro base station informs the UE to send the uplink characteristic information to the micro base station; the micro base station judges whether the UE is close to the micro base station according to the uplink characteristic information of the UE, and sends the information of the UE close to the micro base station to the macro base station; or the micro base station sends a detection result obtained according to the uplink characteristic information of the UE to the macro base station, and the macro base station judges whether the UE is close to the micro base station or not according to the detection result.
The invention is further described in detail below with reference to the drawings and the specific embodiments.
The invention provides a method for detecting UE approaching a micro base station, fig. 2 is a flow diagram of the method for detecting UE approaching a micro base station, and as shown in fig. 2, the method comprises the following steps:
step 201, a macro base station sends uplink characteristic information of UE to a micro base station;
specifically, the macro base station may locate the UE, and may query a location of the micro base station (e.g., longitude and latitude of the micro base station) in an adjacent area relation table in the macro base station, so that the macro base station may determine the UE that may be close to the micro base station according to the location tracking information of the UE in a connected state and the location of the micro base station; the macro base station sends uplink characteristic information of the UE which is possibly close to the micro base station through an S1 interface or an X2 interface, wherein the macro base station sends the uplink characteristic information of one or more UEs to one micro base station, and if the uplink characteristic information of a plurality of UEs is sent, the condition that a plurality of UEs which are possibly close to the micro base station exist is indicated; the uplink characteristic information of the UE includes an ID of the UE, and further includes Sounding Reference Signal (SRS) configuration, Random Access (RA) configuration, or Channel Quality Indicator (CQI) configuration of the UE.
Step 202, after receiving uplink characteristic information of the UE, the micro base station monitors the uplink characteristic information of the UE, or the macro base station informs the UE to send the uplink characteristic information to the micro base station;
specifically, the macro base station determines, according to the position tracking information of the UE in the connected state and the position of the micro base station, that the UE that may be close to the micro base station belongs to rough determination and is not accurate enough, so after receiving uplink feature information of the UE sent by the macro base station, the micro base station needs to screen the UE close to itself from a plurality of UEs that may be close to itself according to the received uplink feature information of the UE, and thus the micro base station switches to frequency point monitoring of the macro base station and uplink feature information of the UE corresponding to the ID of the UE in the uplink feature information; the method comprises the steps that a frequency point converted from a micro base station to a macro base station monitors uplink characteristic information of UE corresponding to an ID, namely the micro base station is converted to a frequency point containing a macro cell of the micro base station to receive the uplink characteristic information of the UE;
or the macro base station sends the characteristic information of the micro base station to UE (user equipment) which is possibly close to the micro base station through broadcasting or special signaling to inform the UE of converting to a frequency point where the micro base station is located, and then the UE actively sends the uplink characteristic information of the UE to the micro base station close to the UE; the characteristic information of the micro base station includes Physical Cell Identity (PCI) and frequency point information, and may further include location information of the micro base station.
Step 203, the micro base station judges whether the UE is close to the micro base station according to the uplink characteristic information of the UE;
specifically, the micro base station judges whether the UE is close to the micro base station according to the uplink characteristic information of the UE sensed by the micro base station or the uplink characteristic information actively sent by the UE; the micro base station performs correlation operation on SRS, RA or CQI in the uplink characteristic information of the UE and the uplink characteristic information of the UE received from the macro base station, if the operation result is correlation, the micro base station is indicated that the UE is close to the micro base station, and if the operation result is uncorrelated, the micro base station is indicated that the UE is not close to the micro base station;
taking the micro base station to perform the correlation operation on the SRS as an example, the micro base station performs the correlation operation on the SRS configuration information of the UE and the received SRS signal of the UE, whether the UE is close to the micro base station can be judged according to the operation result, if the operation result is correlated, the UE is close to the micro base station, and if the operation result is uncorrelated, the UE is not close to the micro base station; here, the method of the micro base station performing the correlation operation on the RA or the CQI is similar to the above-described method of determining whether or not the UE is close to itself by performing the correlation operation on the SRS.
Step 204, the micro base station sends the information of the UE close to the micro base station to the macro base station;
specifically, the micro base station sends the information of the UE close to the micro base station determined according to the uplink characteristic information of the UE to the macro base station through an S1 interface or an X2 interface, and by using an eNB configuration update (eNB configuration update) message or a resource Status report Initiation (resource Status Reporting Initiation) message or a newly defined message, so that the macro base station can know the UE close to the micro base station; the information of the UE is the ID of the UE.
Step 205, the micro base station sends a detection result obtained according to the uplink characteristic information of the UE to the macro base station, and the macro base station judges whether the UE is close to the micro base station according to the detection result;
specifically, the micro base station may not send the information of the UE close to itself, which is determined according to the uplink characteristic information of the UE, to the macro base station, but perform a correlation operation on the SRS, or the RA, or the CQI in the uplink characteristic information of the UE and the uplink characteristic information of the UE received from the macro base station, and send an operation result as a detection result to the macro base station through the S1 interface or the X2 interface, and by using an eNB Configuration Update message or a resource Status Reporting Initiation message or a newly defined message, the macro base station determines whether the UE is close to the micro base station according to the detection result, and if the detection result is correlated, it indicates that the UE is close to the micro base station, and if the detection result is uncorrelated, it indicates that the UE is not close to the micro base station, so the macro base station may know the UE close to the micro base station.
Example one
Fig. 3 is a flowchart illustrating a first embodiment of a method for detecting UE approaching a micro base station according to the present invention, and as shown in fig. 3, the method includes the following steps:
step 301, the macro base station broadcasts the characteristic information of the micro base station or the macro base station sends the characteristic information of the micro base station to the UE through a special signaling; the characteristic information of the micro base station comprises PCI and frequency point information, and can also comprise position information of the micro base station.
Step 302, the macro base station sends uplink feature information of the UE to a micro base station to which the UE may be close through an S1 interface or an X2 interface; the uplink feature information includes an ID of the UE and configuration information such as a corresponding SRS configuration, or an RA configuration, or a CQI configuration.
303, for a UE supporting dual transmitters, after the UE receives a broadcast message or a dedicated message, automatically converting the frequency point to send uplink feature information to the micro base station according to the frequency point information in the feature information of the micro base station; here, for a UE with only a single transmitter, the macro base station needs to send uplink characteristic information to a subframe designated for the UE through a dedicated signaling, and the UE sends the uplink characteristic information to the micro base station on the designated subframe and converted to a frequency point of the micro base station.
Step 304, the micro base station judges whether the UE is close to itself according to the uplink characteristic information actively sent by the UE; and when the micro base station judges that the UE is close to the micro base station, the micro base station sends the information of the UE close to the micro base station to the macro base station.
And 305, the micro base station sends a detection result obtained according to the uplink characteristic information of the UE to the macro base station, and the macro base station judges whether the UE is close to the micro base station or not according to the detection result.
Step 306, if the micro base station determines that the UE is not close to itself, after a certain time interval, step 304 is executed or step 305 is executed.
Example two
Fig. 4 is a flowchart illustrating a second embodiment of a method for detecting UE approaching a micro base station according to the present invention, and as shown in fig. 4, the method includes the following steps:
step 401, the macro base station sends uplink feature information of the UE to a micro base station to which the UE may be close through an S1 interface or an X2 interface; the uplink feature information includes an ID of the UE and configuration information such as a corresponding SRS configuration, or an RA configuration, or a CQI configuration.
Step 402, the micro base station automatically switches to the frequency point of the macro base station, and monitors the uplink characteristic information of the UE.
Step 403, the micro base station determines whether the UE is close to itself according to the uplink feature information of the UE, and when the micro base station determines that the UE is close to itself, the micro base station sends information of the UE close to itself to the macro base station.
And step 404, the micro base station sends a detection result obtained according to the uplink characteristic information of the UE to the macro base station, and the macro base station judges whether the UE is close to the micro base station or not according to the detection result.
Step 405, if the micro base station determines that the UE is not close to itself, after a certain time interval, step 403 is executed or step 404 is executed.
In order to implement the above method, the present invention further provides a system for detecting UE approaching to a micro base station, fig. 5 is a schematic structural diagram of the system for detecting UE approaching to a micro base station according to the present invention, as shown in fig. 5, the system includes: a micro base station 51, a UE52, a macro base station 53; wherein,
the micro base station 51 is configured to listen to uplink feature information of the UE 52;
the micro base station 51 is further configured to determine whether the UE52 is close to itself according to the uplink characteristic information of the UE52, and send information of the UE52 close to itself to the macro base station 53; or, the UE is further configured to send a detection result obtained according to the uplink feature information of the UE52 to the macro base station 53;
and the macro base station 53 is configured to, when receiving the detection result, determine whether the UE52 is close to the micro base station 51 according to the detection result.
The macro base station 53 is further configured to send the uplink feature information of the UE52 to the micro base station 51 before the micro base station listens to the uplink feature information of the UE 52.
The present invention also provides a detection system for UE approaching to the micro base station, fig. 5 is a schematic structural diagram of the detection system for UE approaching to the micro base station according to the present invention, as shown in fig. 5, the system includes: macro base station 53, UE52, micro base station 51; wherein,
the macro base station 53, configured to notify the UE52 to send the uplink feature information to the micro base station 51;
the micro base station 51 is configured to determine whether the UE52 is close to the micro base station according to the uplink characteristic information of the UE52, and send information of the UE close to the micro base station to the macro base station 53; or, the UE is configured to send a detection result obtained according to the uplink feature information of the UE52 to the macro base station 53;
and the macro base station 53 is configured to, when receiving the detection result, determine whether the UE52 is close to the micro base station 51 according to the detection result.
The macro base station 53 is further configured to send the uplink feature information of the UE52 to the micro base station 51 before the micro base station listens to the uplink feature information of the UE 52.
In the above two systems, the step of sending the uplink feature information of the UE52 to the micro base station 51 by the macro base station 53 is: the macro base station judges the UE which is possibly close to the micro base station according to the position tracking information of the UE in the connection state and the position of the micro base station, and sends uplink characteristic information of the UE which is possibly close to the micro base station through an S1 interface or an X2 interface; the uplink characteristic information of the UE includes an ID of the UE, and further includes a Sounding Reference Signal (SRS) configuration, or a Random Access (RA) configuration, or a Channel Quality Indicator (CQI) configuration.
The micro base station 51 monitors the uplink characteristic information of the UE52 as follows: after receiving uplink characteristic information of the UE sent by the macro base station, the micro base station switches to the frequency point of the macro base station to monitor the uplink characteristic information of the UE corresponding to the ID of the UE in the uplink characteristic information.
The step of the macro base station 53 informing the UE52 to send the uplink feature information to the micro base station 51 is: the macro base station sends the characteristic information of the micro base station to UE (user equipment) which is possibly close to the micro base station through broadcasting or special signaling, and informs the UE of switching to a frequency point where the micro base station is located; the UE actively sends the uplink characteristic information of the UE to a micro base station close to the UE; the characteristic information of the micro base station comprises Physical Cell Identity (PCI) and frequency point information, and also comprises position information of the micro base station.
The micro base station 51, according to the uplink feature information of the UE52, determines whether the UE52 approaches itself as: the micro base station performs correlation operation on the uplink characteristic information of the UE sensed by the micro base station or the SRS, RA or CQI in the uplink characteristic information actively sent by the UE and the uplink characteristic information of the UE received from the macro base station, if the operation result is correlated, the micro base station is indicated that the UE is close to the micro base station, and if the operation result is uncorrelated, the micro base station is indicated that the UE is not close to the micro base station.
The micro base station 51 sending the information of the UE52 close to itself to the macro base station 53 is: and the micro base station sends the information of the UE close to the micro base station determined according to the uplink characteristic information of the UE to the macro base station by an S1 interface or an X2 interface and by utilizing an eNB Configuration Update message or a ResourceState reporting initiation message or a newly defined message.
The micro base station 51 sends the detection result obtained according to the uplink characteristic information of the UE52 to the macro base station 53, and the macro base station 53 determines whether the UE52 is close to the micro base station 51 according to the detection result:
after performing correlation operation on the SRS, or RA, or CQI in the uplink characteristic information of the UE and the uplink characteristic information of the UE received from the macro base station, the micro base station sends an operation result serving as a detection result to the macro base station through an S1 interface or an X2 interface and by utilizing an eNB Configuration Update message or a resource Status Reporting Initiation message or a newly defined message; and the macro base station judges whether the UE is close to the micro base station or not according to the detection result, if the detection result is relevant, the UE is close to the micro base station, and if the detection result is irrelevant, the UE is not close to the micro base station.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, and any modifications, equivalents, improvements, etc. that are within the spirit and principle of the present invention should be included in the present invention.
Claims (11)
1. A method for detecting UE approaching a micro base station, the method comprising:
the micro base station monitors uplink characteristic information of the UE, or the macro base station informs the UE to send the uplink characteristic information to the micro base station;
the micro base station judges whether the UE is close to the micro base station according to the related operation result of the uplink characteristic information of the UE, and sends the information of the UE close to the micro base station to the macro base station; or the micro base station sends a correlation operation result obtained through correlation operation according to the uplink characteristic information of the UE to the macro base station, and the macro base station judges whether the UE is close to the micro base station or not according to the correlation operation result;
the micro base station judges whether the UE approaches to the micro base station according to the related operation result of the uplink characteristic information of the UE:
the micro base station performs correlation operation on the uplink characteristic information of the UE sensed by the micro base station or the SRS, RA or CQI in the uplink characteristic information actively sent by the UE and the uplink characteristic information of the UE received from the macro base station, if the operation result is correlated, the micro base station is indicated that the UE is close to the micro base station, and if the operation result is uncorrelated, the micro base station is indicated that the UE is not close to the micro base station.
2. The method of claim 1, wherein before the micro base station listens to the uplink characteristic information of the UE, the method further comprises: and the macro base station sends the uplink characteristic information of the UE to the micro base station.
3. The method of claim 2, wherein the macro base station sending the uplink feature information of the UE to the micro base station is:
the macro base station judges the UE which is possibly close to the micro base station according to the position tracking information of the UE in the connection state and the position of the micro base station, and sends uplink characteristic information of the UE which is possibly close to the micro base station through an S1 interface or an X2 interface;
the uplink characteristic information of the UE includes an ID of the UE, and further includes a Sounding Reference Signal (SRS) configuration, or a Random Access (RA) configuration, or a Channel Quality Indicator (CQI) configuration.
4. The method of claim 1, wherein the micro base station listens to the uplink characteristic information of the UE by:
after receiving uplink characteristic information of the UE sent by the macro base station, the micro base station switches to the frequency point of the macro base station to monitor the uplink characteristic information of the UE corresponding to the ID of the UE in the uplink characteristic information.
5. The method of claim 1, wherein the step of the macro base station informing the UE of sending the uplink feature information to the micro base station comprises:
the macro base station sends the characteristic information of the micro base station to UE (user equipment) which is possibly close to the micro base station through broadcasting or special signaling, and informs the UE of switching to a frequency point where the micro base station is located;
the UE actively sends the uplink characteristic information of the UE to a micro base station close to the UE; the characteristic information of the micro base station comprises Physical Cell Identity (PCI) and frequency point information, and also comprises position information of the micro base station.
6. The method of claim 1, wherein the sending the information of the UE close to the macro base station comprises:
and the micro base station transmits the information of the UE close to the micro base station determined according to the uplink characteristic information of the UE to the macro base station through an S1 interface or an X2 interface and by utilizing the configuration updating message of the eNB or the resource state report initiating message or the newly defined message.
7. The method of claim 1, wherein the micro base station sends a correlation operation result obtained by correlation operation according to uplink characteristic information of the UE to the macro base station, and the macro base station determines whether the UE is close to the micro base station according to the correlation operation result:
after performing correlation operation on the SRS, or RA, or CQI in the uplink characteristic information of the UE and the uplink characteristic information of the UE received from the macro base station, the micro base station transmits a correlation operation result to the macro base station through an S1 interface or an X2 interface and by utilizing an eNB configuration update message or a resource state report initiating message or a newly defined message;
and the macro base station judges whether the UE is close to the micro base station or not according to the correlation operation result, if the correlation operation result is correlated, the UE is close to the micro base station, and if the correlation operation result is uncorrelated, the UE is not close to the micro base station.
8. A system for detecting proximity of a UE to a micro base station, the system comprising: a micro base station, UE and a macro base station; wherein,
the micro base station is used for monitoring the uplink characteristic information of the UE;
the micro base station is also used for judging whether the UE is close to the micro base station according to the related operation result of the uplink characteristic information of the UE and sending the information of the UE close to the micro base station to the macro base station; or, the macro base station is further configured to send a correlation operation result obtained through correlation operation according to the uplink characteristic information of the UE to the macro base station;
the macro base station is used for judging whether the UE is close to the micro base station or not according to the correlation operation result when receiving the correlation operation result;
the judging whether the UE approaches to the UE according to the relevant operation result of the uplink characteristic information of the UE is as follows:
the micro base station performs correlation operation on the uplink characteristic information of the UE sensed by the micro base station or the SRS, RA or CQI in the uplink characteristic information actively sent by the UE and the uplink characteristic information of the UE received from the macro base station, if the operation result is correlated, the micro base station is indicated that the UE is close to the micro base station, and if the operation result is uncorrelated, the micro base station is indicated that the UE is not close to the micro base station.
9. The system of claim 8, wherein the macro base station is further configured to send the uplink characteristic information of the UE to the micro base station before the micro base station listens to the uplink characteristic information of the UE.
10. A system for detecting proximity of a UE to a micro base station, the system comprising: a macro base station, UE, a micro base station; wherein,
the macro base station is used for informing the UE to send the uplink characteristic information to the micro base station;
the micro base station is used for judging whether the UE is close to the micro base station according to the related operation result of the uplink characteristic information of the UE and sending the information of the UE close to the micro base station to the macro base station; or, the correlation operation result is obtained by correlation operation according to the uplink characteristic information of the UE and is sent to the macro base station;
the macro base station is used for judging whether the UE is close to the micro base station or not according to the correlation operation result when receiving the correlation operation result;
the judging whether the UE approaches to the UE according to the relevant operation result of the uplink characteristic information of the UE is as follows:
the micro base station performs correlation operation on the uplink characteristic information of the UE sensed by the micro base station or the SRS, RA or CQI in the uplink characteristic information actively sent by the UE and the uplink characteristic information of the UE received from the macro base station, if the operation result is correlated, the micro base station is indicated that the UE is close to the micro base station, and if the operation result is uncorrelated, the micro base station is indicated that the UE is not close to the micro base station.
11. The system of claim 10, wherein the macro base station is further configured to send the uplink characteristic information of the UE to the micro base station before the micro base station listens to the uplink characteristic information of the UE.
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| WO2016000092A1 (en) * | 2014-06-03 | 2016-01-07 | 华为技术有限公司 | Communication method in heterogeneous network, macro base station, micro base station, and user equipment |
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