Background technology
What R9 had introduced connected state Home eNodeB HeNB enters inbound switching characteristic (being that user equipment (UE) switches to the HeNB sub-district from macrocell).
As shown in Figure 1, be existing HeNB inbound switching flow figure, may further comprise the steps:
Step S101, the tracking marking of UE coupling (fingerprint matching, to as if the member HeNB sub-district of UE) coupling, promptly UE detects the fingerprint information of the HeNB sub-district that certain ever accessed crosses.
Step S102, UE report network near indication (proximity indication) message, comprise this HeNB sub-district frequency point information at that time of preserving in the fingerprint information in this message.
Whether step S103, the frequency that network side reports according to UE check current is that UE has disposed this frequency measurement, if do not have, then the sending measuring configuration messages is measured for UE disposes on this frequency accordingly.
Step S104, UE carries out normal measuring process on newly-increased frequency, and when Event triggered and report condition satisfy, with sub-district PCI (the Physical Cell Identity: information and RSRP (Reference Signal Received Power Physical Cell Identifier) that satisfies condition on this frequency, Reference Signal Received Power)/RSRQ (Reference Signal Received Quality, Reference Signal Received Quality) information reports network.
Step S105, the sub-district that the signal quality that network side reports UE satisfies condition is carried out PCIrange and is detected.The working hypothesis of RAN2 is that network side is relevant for closed user group (Closed UserGroup, CSG) the PCI range of sub-district and mixing (hybrid) sub-district at present.
Step S106, if the sub-district PCI that UE reports is in macrocell or open sub-district, then network side is carried out normal sub-district switching preparation process; If the sub-district PCI that UE reports belongs to CSG or hybrid sub-district, execution in step S107~step S109 then.
Step S107, for CSG sub-district or hybrid sub-district, the indication that network side sends read system information and reports to UE.
Step S108, UE read according to the indication of network and reporting system information (SystemInformation SI) gives network, does to switch for network and prepares.Wherein, system information comprises initial access check result (judging whether UE is the contracted user of this sub-district), TAI (Tracking AreaIdendity, tracing area sign), ECGI (Evolved Global Cell Idendity, evolved Cell Global Identity) and possible CSG ID etc.
Step S109, whether SI that network based UE reports decision is initiated to the switching set-up procedure of target HeNB sub-district etc.
The defective of existing HeNB inbound changing method is, when measuring on a certain frequency, UE macrocell and HeNB sub-district are not distinguished, therefore when measurement event satisfies trigger condition, UE will report the measurement result of a plurality of macrocells and HeNB sub-district simultaneously on this frequency, this will cause very big empty overhead, especially only wish to take place under the situation of inbound switching this moment at network.Therefore, need a kind of method to address the above problem.
Summary of the invention
Purpose of the present invention is intended to solve at least one of above-mentioned technological deficiency, particularly solve UE under newly-increased frequency measurement and report for macrocell and HeNB sub-district and do not distinguish the problem that causes empty overhead to increase.
To achieve these goals, one aspect of the present invention proposes the method that a kind of auxiliary Home eNodeB switches, may further comprise the steps: evolution base station eNB sends by the measurement configuration messages for the newly-increased different-frequency measure configuration frequency of described UE that triggers near member's Home eNodeB HeNB to UE, wherein, described measurement configuration messages comprises the PCI information relevant with described HeNB sub-district; Described UE measures on the frequency of described new configuration according to described measurement configuration messages, when Event triggered and report condition satisfy, only the measurement result in the HeNB sub-district of described PCI information indication is reported to described eNB.
As one embodiment of the present of invention, the described PCI information relevant with the HeNB sub-district comprises: the closed user group CSG sub-district of planning on the frequency of described new configuration and the PCIrange of hybrid sub-district; Perhaps described eNB is according to the PCI tabulation of adjacent C SG sub-district and hybrid sub-district on the frequency of the described new configuration of ANR (Automatic Neighbor Relation, Automatic Neighboring Relation) function maintenance.
The present invention also proposes the system that a kind of auxiliary Home eNodeB switches on the other hand, comprises eNB and UE.Described eNB is used for sending by the measurement configuration messages for the newly-increased different-frequency measure configuration frequency of described UE that triggers near member HeNB to described UE, and receive the measurement result that described UE reports, wherein, described measurement configuration messages comprises the PCI information relevant with the HeNB sub-district; Described UE is used for measuring on the frequency of described new configuration according to described measurement configuration messages, when Event triggered and report condition satisfy, only the measurement result in the HeNB sub-district of described PCI information indication is reported to described eNB.
The present invention also proposes a kind of eNB, comprises sending module and receiver module as a result.Described sending module is used for sending by the measurement configuration messages for the newly-increased different-frequency measure configuration frequency of described UE that triggers near member HeNB to described UE, and wherein, described measurement configuration messages comprises the PCI information relevant with the HeNB sub-district; Described receiver module as a result is used to receive the measurement result in the HeNB sub-district of the described PCI information indication that described UE reports.
The present invention also proposes a kind of UE, comprises receiver module, measurement module and reporting module.Described receiver module is used to receive that described eNB sends by the measurement configuration messages for the newly-increased different-frequency measure configuration frequency of described UE that triggers near member HeNB, and wherein, described measurement configuration messages comprises the PCI information relevant with the HeNB sub-district; Described measurement module is used for measuring on the frequency of described new configuration according to described measurement configuration messages; Measurement result in the HeNB sub-district that described reporting module is used for the described PCI information that described measurement module obtains is indicated reports to described eNB.
The present invention is by increasing the relevant PCI information in HeNB sub-district in the measurement configuration messages by the newly-increased different-frequency measure configuration frequency that triggers near member HeNB, make UE in the inbound handoff procedure, only report the measurement result of HeNB sub-district, reduced and eated dishes without rice or wine to report expense.
Aspect that the present invention adds and advantage part in the following description provide, and part will become obviously from the following description, or recognize by practice of the present invention.
Embodiment
Describe embodiments of the invention below in detail, the example of described embodiment is shown in the drawings, and wherein identical from start to finish or similar label is represented identical or similar elements or the element with identical or similar functions.Below by the embodiment that is described with reference to the drawings is exemplary, only is used to explain the present invention, and can not be interpreted as limitation of the present invention.
The present invention mainly is to increase the relevant PCI information in HeNB sub-district in the measurement configuration messages by the newly-increased different-frequency measure configuration frequency that triggers near member HeNB, make UE in the inbound handoff procedure, only report the measurement result of HeNB sub-district, eat dishes without rice or wine to report expense thereby reduce.
As shown in Figure 2, be HeNB switching flow schematic diagram according to auxiliary Home eNodeB changing method of the present invention.For simplicity, only introduce step S203 related to the present invention and step S204 in detail, other steps are not described in detail at this.
Step S201, the fingerprint matching of UE, promptly UE detects the fingerprint information of the HeNB sub-district that certain ever accessed crosses.
Step S202, UE report network proximity indication message, comprise this HeNB sub-district frequency point information at that time of preserving in the fingerprint information in this message.
Whether step S203, the frequency that network side reports according to UE check current is that UE has disposed this frequency measurement, if do not have, then the sending measuring configuration messages is measured for UE disposes on this frequency accordingly.
In the LTE system, (Radio Resource Control, RRC) signaling sends to UE and measures configuration messages by Radio Resource control in the base station.The institutional framework of measuring configuration messages comprises: measuring object, report configuration, measure and identify and other parameters etc.
Wherein, measuring object is base unit with the frequency, and the measuring object of each configuration is an independent frequency, has independent measuring object sign.
Report configuration to be divided into Event triggered and to report to trigger with the cycle and report according to triggering type, each reports configuration to have independent sign.The threshold value that reports the some incidents of configuration dispensing of Event triggered type and the duration of satisfying trigger condition.At present, the same frequency/different-frequency measure incident one of LTE system has five, comprising: the Serving cell channel quality is greater than thresholding; The Serving cell channel quality is less than thresholding; The adjacent cell channel quality is better than the Serving cell channel quality; The adjacent cell channel quality is greater than thresholding; And the Serving cell channel quality less than thresholding 1 and adjacent cell channel quality greater than thresholding 2.The different commercial measurement incident one of LTE system has two, comprising: different technology adjacent cell channel quality is greater than thresholding; And the Serving cell channel quality less than thresholding 1 and different technology adjacent cell channel quality greater than thresholding 2.The purpose (for example, reporting CGI) that reports configuration dispensing periodic triggers of periodic triggers type.
Measurement is designated an independent sign, connects a measuring object and reports configuration, opens the thresholding of measuring if reached, and UE judges whether to carry out this kind measurement according to measuring having or not of sign.
Other parameters also can comprise the measuring amount configuration, measure and open thresholding and speed state parameter etc.
In the present invention, in order to make UE can distinguish macrocell and HeNB sub-district when on the frequency of new configuration, measuring, in measuring configuration messages, increase the relevant PCI information in HeNB sub-district.The PCI information that this HeNB sub-district is relevant can be the CGI sub-district of planning on the frequency of new configuration and the PCI range of hybrid sub-district, the PCI tabulation of adjacent C SG sub-district and hybrid sub-district on this frequency that also can be the base station safeguard according to the ANR function.
Step S204, UE carries out normal measuring process on newly-increased frequency, and when Event triggered and report condition satisfy, and only the measurement result with the HeNB sub-district of PCI information indication reports network.
Measure reporting message for every and only can report to measure the pairing content of sign, promptly a frequency satisfies the relevant sub-district (reporting at most is 8 sub-districts) that reports configuration down.The measurement reporting message comprises: the physical-layer cell identifier of the adjacent sub-district that measure sign, each measuring amount of this sub-district (RSRP and RSRQ), satisfies condition etc.
Generally, network can comprise common frequency measurement, different-frequency measure and different commercial measurement for the measurement on the UE configuration some frequencies that are in connected state.Common frequency measurement can be assessed the quality of current UE service frequency.In addition, common frequency measurement, different-frequency measure and different commercial measurement reports and can the auxiliary network side make suitable mobility handover management.
Step S205, the sub-district that the signal quality that network side reports UE satisfies condition is carried out PCIrange and is detected.The working hypothesis of RAN2 is the PCI range of network side relevant for CSG sub-district and hybrid sub-district at present.
Step S206, if the sub-district PCI that UE reports is in macrocell or open sub-district, then network side is carried out normal sub-district switching preparation process; If the sub-district PCI that UE reports belongs to CSG or hybrid sub-district, execution in step S207~step S209 then.
Step S207, for CSG sub-district or hybrid sub-district, the indication that network side sends read system information and reports to UE.
Step S208, UE read according to the indication of network and reporting system information (SystemInformation SI) gives network, does to switch for network and prepares.Wherein, system information comprises initial access check result (judging whether UE is the contracted user of this sub-district), TAI, ECGI and possible CSG ID etc.
Step S209, whether SI that network based UE reports decision is initiated to the switching set-up procedure of target HeNB sub-district etc.
Specify the method that above-mentioned auxiliary Home eNodeB switches with two embodiment below.By the description of specific embodiment, the present invention is above-mentioned and/or that add, and aspect and advantage will become more obvious.
Embodiment 1
As shown in Figure 3, the schematic diagram of an embodiment who switches for HeNB inbound.Suppose that UE1 is the terminal that is in the macrocell eNB1 service range, and in this base station subordinate's sub-district, set up RRC connection and professional transmission.ENB1 is the measurement that UE1 has disposed 3 frequencies based on specific Resource Management Algorithm, comprises F1 (with frequently), F2 and F3.UE1 is all the time to frequently measuring, and (for example, during the shared channel degradation) starts different-frequency measure under certain condition, when the measurement event trigger condition that is configured and report condition satisfy measurement result is reported network.At this moment, UE1 moves to the edge of some HeNB1 sub-district, promptly detects the fingerprint information of this HeNB sub-district, then carries out following steps:
Step S301, UE1 reports proximity indication message to eNB1, the frequency point information F4 that preserves when visiting this HeNB sub-district before comprising in the proximityindication message.
Step S302, eNB1 receives the message that UE1 reports, find the current measurement of UE1 configuration F4 frequency that is not, then the sending measuring configuration messages comprises frequency F4 and the CSG sub-district of the last network planning of frequency F4 and the PCI range of Hybrid sub-district in the measurement configuration messages.
Step S303, UE1 receive the measurement configuration messages, on frequency F4, start to measure, and when Event triggered and report condition satisfy, only report PCI range with interior cell measurement results to network.
Embodiment 2
As shown in Figure 4, the schematic diagram of another embodiment that switches for HeNB inbound.Basic identical with the situation of embodiment 1, herein for simplicity, be not described in detail.Unique different be when UE1 moves to the edge of some HeNB1 sub-district, to carry out following steps:
Step S401, UE1 reports proximity indication message to eNB1, the frequency point information F4 that preserves when visiting this HeNB sub-district before comprising in the proximityindication message.
Step S402, eNB1 receives the message that UE1 reports, find the current measurement of UE1 configuration F4 frequency of not being, sending measuring configuration messages is then measured comprise the adjacent C SG that frequency F4 and eNB1 safeguard or the PCI tabulation of Hybrid sub-district in the configuration messages on frequency F4.
Step S403, UE1 receive the measurement configuration messages, on frequency F4, start to measure, and when Event triggered and report condition satisfy, only report the PCI tabulation with interior cell measurement results to network.
For implementing aforesaid method, the invention provides the system that a kind of auxiliary Home eNodeB switches, as shown in Figure 5.Fig. 5 has shown that the present invention is the system construction drawing of the auxiliary Home eNodeB switching of strength, and this system comprises eNB 100 and UE 200.It is the measurement configuration messages that UE 200 newly-increased different-frequency measures dispose frequency that eNB 100 is used for sending by what trigger near member HeNB to UE 200, and receive the measurement result that UE 200 reports, wherein, measure configuration messages and comprise the PCI information relevant with the HeNB sub-district; UE 200 is used for measuring on the frequency of new configuration according to measuring configuration messages, when Event triggered and report condition satisfy, only the measurement result in the HeNB sub-district of PCI information indication is reported to eNB 100.
Wherein, eNB 100 comprises sending module 110 and receiver module 120 as a result.It is the measurement configuration messages that UE 200 newly-increased different-frequency measures dispose frequency that sending module 110 is used for sending by what trigger near member HeNB to UE 200; Receiver module 120 is used to receive the measurement result in the HeNB sub-district of the PCI information indication that UE 200 reports as a result.
Wherein, UE 200 comprises receiver module 210, measurement module 220 and reporting module 230.Receiver module 210 is used to receive the measurement configuration messages that eNB 100 sends; Measurement module 220 is used for measuring on the frequency of new configuration according to measuring configuration messages; Measurement result in the HeNB sub-district that the PCI information that reporting module 230 is used for that measurement module 220 is obtained is indicated reports to eNB 100.
The present invention is by increasing the relevant PCI message in HeNB sub-district in the measurement configuration messages by the newly-increased different-frequency measure configuration frequency that triggers near member HeNB, make UE in the inbound handoff procedure, only report the measurement result of HeNB sub-district, reduced and eated dishes without rice or wine to report expense.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.