CN102238680B

CN102238680B - Heterogeneous network switching control method, signal transmission method, equipment and communication system

Info

Publication number: CN102238680B
Application number: CN2010101758456A
Authority: CN
Inventors: 覃忠宾; 万蕾; 熊新; 马莎
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2010-05-07
Filing date: 2010-05-07
Publication date: 2013-12-04
Anticipated expiration: 2030-05-07
Also published as: CN102238680A

Abstract

The embodiment of the invention discloses a heterogeneous network switching control method, a signal transmission method, signal transmission equipment and a communication system. In the embodiment of the invention, adjacent/covered overlapped base stations all adopt the combination design of first-type and second-type carriers, and at least a pair of the first-type and second-type carriers of the adjacent/covered overlapped base stations are identical in frequency; and the adjacent/covered overlapped base stations transmit physical downlink control channel (PDCCH) signaling, physical control format indicator channel (PCFICH) signaling, physical hybrid automatic repeat request indicator channel (PHICH) signaling and cell-specific reference symbols (CRS) in physical control channels of the first-type carriers, and transmit the CRSs on the second-type carriers. Therefore, user equipment (UE) can be ensured to obtain accurate physical control channel mobility measurement results of cells of the adjacent/covered overlapped base stations and timely trigger measurement reporting in same-frequency measurement; moreover, the service continuity of a user can be relatively better ensured, and unnecessary uplink/downlink data channel interference between neighbor cells can be avoided.

Description

Heterogeneous network switching control method and signaling method and equipment and communication system

Technical field

The present invention relates to communication technical field, be specifically related to heterogeneous network switching control method and signaling method and equipment and communication system.

Background technology

Along with the continuous evolution of communication system, developed at present and occurred that some are applicable to community/network communication node that different scenes have different coverages.

With third generation collaborative project (3GPP, 3rd Generation Partnership Project) Long Term Evolution/enhancing Long Term Evolution (LTE/LTE-A, Long Term Evolution/LTE-Advanced) system is example, Home eNodeB (HeNB, Home eNB), the slight evolution base station (pico eNB) that is applicable to the residential quarter coverage, the relay station (Relay) that is applicable to expand macrocell edge throughput and the macro base station etc. that are applicable to the home/office coverage have been developed.Wherein, the deployment of multiple node can form the heterogeneous network communication scenes as shown in Fig. 1-a, the edge that covers crossover regions centre or cover crossover region at some, the up-downgoing transmission of subscriber equipment (UE, User Equipment) all likely is subject to the strong interference of adjacent cell transmission.Therefore, two adjacent/interference coordinations of covering overlapping minizone will contribute to the spectrum efficiency of whole elevator system and the spectrum efficiency of edge customer.

The interference coordination of heterogeneous network comprises the interference coordination of physical control channel and interference coordination two parts of physical data channel, wherein, the interference coordination of physical data channel can solve by carrying out coordinated scheduling between base station, and the correct demodulation of physical control channel is the prerequisite of the correct demodulation of physical data channel.

The deployment of heterogeneous network may make the center of macrocell produce strong co-channel interference, causes the macrocell central user to suffer higher physical channel demodulation error probability.Referring to Fig. 1-b, in prior art, the large carrier wave in Jiang Yige community splits into two little carrier waves (f1, f2), and the physical control channel of two overlapping/adjacent communities is staggered on frequency; Or above the control channel of two overlapping/adjacent communities is staggered on frequency at two different carrier waves (f1, f2).For example, physical control channel carrying Physical Downlink Control Channel (PDCCH on the carrier wave f1 of large coverage cell, Physical Downlink Control Channel) signaling, Physical Control Format Indicator Channel (PCFICH:Physical Control Format Indicator Channel) signaling, physical mixed feedback retransmission indicating chanel (PHICH:Physical Hybrid ARQ Indicator Channel) signaling and frequency pilot sign (CRS, Cell-Specific Reference Symbol) etc., and the upper physical control channel transmitted power of the carrier wave f2 of large coverage cell is zero, and the upper physical control channel carrying PDCCH signaling of the carrier wave f2 of little coverage cell and CRS etc., the upper physical control channel transmitted power of the carrier wave f1 of little coverage cell is zero, and then realizes the control channel of two overlapping/adjacent communities is staggered on frequency.

In the research and practice process to prior art, the inventor finds, avoids the mechanism of co-channel interference in existing heterogeneous network, may cause carrying out too much different-frequency measure as the UE of LTE Rel-8/9 version, thereby increase the power consumption of UE because of different-frequency measure; And, when the UE of Rel-8/9 version enters the community of little coverage in the community by large coverage, the signal strength signal intensity of its physical control channel on carrier wave f1 is better than physical data channel, and UE carries out on physical control channel, be mobility measurements, and what on data channel, carry out is the measurement of scheduling property.Now, orthogonality due to two minizone physical control channels, UE is when entering the overlay area of neighbor cell, because cell-of-origin still has mobility measurements performance preferably, respond with and carry out the community switching thereby can't trigger in time on the mobility of UE, and then cause physical data channel stronger interference may occur.

Summary of the invention

The embodiment of the present invention provides a kind of heterogeneous network switching control method and signaling method and equipment and communication system, be conducive to reduce the power consumption of UE different-frequency measure, guarantee the accuracy of UE to the physical control channel mobility measurements of neighbor cell, and measure the promptness that reports triggering.

For solving the problems of the technologies described above, the embodiment of the present invention provides following technical scheme:

A kind of physical control channel signaling method comprises:

The first base station sends physical downlink control channel PDCCH signaling, Physical Control Format Indicator Channel PCFICH signaling, physical mixed feedback retransmission indicating chanel PHICH signaling and frequency pilot sign CRS at the physical control channel of first kind carrier wave, at the physical control channel transmission CRS of Equations of The Second Kind carrier wave;

Adjacent with the first base station/as to cover the second overlapping base station to send PDCCH signaling, PCFICH signaling, PHICH signaling and CRS at the physical control channel of first kind carrier wave, at the physical control channel transmission CRS of Equations of The Second Kind carrier wave;

Wherein, in the first kind carrier wave of the first base station in the Equations of The Second Kind carrier wave of at least one carrier wave and the second base station at least one carrier wave each other with carrier wave frequently; And/or, in the Equations of The Second Kind carrier wave of the first base station in the first kind carrier wave of at least one carrier wave and the second base station at least one carrier wave each other with carrier wave frequently.

A kind of heterogeneous network switching control method comprises:

The first base station receives the measurement report of reported by user equipment UE, described measurement report carries UE to the first base station and the common frequency measurement information that is adjacent/covers the second overlapping base station, wherein, the first kind carrier wave that the carrier wave on measurement frequency corresponding to described common frequency measurement information is the first base station and the Equations of The Second Kind carrier wave of the second base station; Or, the Equations of The Second Kind carrier wave that the carrier wave on measurement frequency corresponding to described common frequency measurement information is the first base station and the first kind carrier wave of the second base station; Wherein, the physical control channel of described first kind carrier wave carrying PDCCH signaling, PCFICH signaling, PHICH signaling and CRS; The physical control channel carrying CRS of described Equations of The Second Kind carrier wave;

Carry out the alien frequencies switch decision according to described common frequency measurement information;

If the result of alien frequencies switch decision, for meeting the condition of carrying out the alien frequencies switching based on common frequency measurement, sends handover request message to the second base station, described handover request message is carried the indication information that common frequency measurement triggers the alien frequencies switching.

A kind of communication system comprises:

The first base station, and adjacent with the first base station/as to cover the second overlapping base station;

The first base station, send PDCCH signaling, PCFICH signaling, PHICH signaling and CRS for the physical control channel at first kind carrier wave, at the physical control channel transmission CRS of Equations of The Second Kind carrier wave;

The second base station, send PDCCH signaling, PCFICH signaling, PHICH signaling and CRS for the physical control channel at first kind carrier wave, at the physical control channel transmission CRS of Equations of The Second Kind carrier wave;

A kind of base station comprises:

Receiver module, for receiving the measurement report of reported by user equipment UE, described measurement report carries UE to described base station and the common frequency measurement information that is adjacent/covers the second overlapping base station, wherein, the first kind carrier wave that the carrier wave on measurement frequency corresponding to described common frequency measurement information is described base station and the Equations of The Second Kind carrier wave of the second base station; Or, the Equations of The Second Kind carrier wave that the carrier wave on measurement frequency corresponding to described common frequency measurement information is described base station and the first kind carrier wave of the second base station; Wherein, the physical control channel of described first kind carrier wave carrying PDCCH signaling, PCFICH signaling, PHICH signaling and CRS; The physical control channel carrying CRS of described Equations of The Second Kind carrier wave;

Judging module, for carrying out the alien frequencies switch decision according to described common frequency measurement information;

Sending module, while for the result of determining the alien frequencies switch decision in described judging module, for meeting, based on common frequency measurement, carrying out the condition of alien frequencies switching, send handover request message to the second base station, described handover request message is carried the indication information that common frequency measurement triggers the alien frequencies switching.

A kind of communication system comprises:

The described base station of above-described embodiment.

Therefore, adjacent in the embodiment of the present invention/as to cover the Combination Design that overlapping base station all adopts first kind carrier wave and Equations of The Second Kind carrier wave, and adjacent/as to cover in the first kind carrier wave of overlapping base station and Equations of The Second Kind carrier wave at least one pair of with frequently, adjacent/as to cover overlapping base station to send the PDCCH signaling at the physical control channel of first kind carrier wave, the PCFICH signaling, PHICH signaling and CRS, and send CRS at the Equations of The Second Kind carrier wave, therefore can guarantee that UE is when common frequency measurement, to adjacent/cover the accuracy of the community physical control channel mobility measurements result of overlapping base station, and measurement reports the promptness of triggering, and can guarantee preferably user's service continuity, and avoid the meaningless up/down row data channel of neighboring interval to disturb.

The accompanying drawing explanation

In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, in below describing embodiment, the accompanying drawing of required use is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.

Fig. 1-a is a kind of heterogeneous network schematic diagram that prior art provides;

Fig. 1-b is a kind of neighbor cell carrier wave design diagram that prior art provides;

Fig. 2-a is that the embodiment of the present invention provides a kind of physical control channel design diagram;

Fig. 2-b is the Resource Block carrying schematic diagram that the embodiment of the present invention provides a kind of physical control channel;

Fig. 2-c is that the embodiment of the present invention provides a kind of adjacent area physical control channel design diagram;

Fig. 2-d is that the embodiment of the present invention provides another kind of adjacent area physical control channel design diagram

Fig. 2-e is the schematic diagram that the embodiment of the present invention provides a kind of measurement event and alignment processing rule;

Fig. 3 is that the embodiment of the present invention one provides a kind of control channel signaling method schematic flow sheet

Fig. 4 is that the embodiment of the present invention two provides a kind of heterogeneous network switching control method schematic flow sheet;

Fig. 5 is that the embodiment of the present invention three provides a kind of heterogeneous network switching control method schematic flow sheet;

Fig. 6 is that the embodiment of the present invention provides a kind of communication system schematic diagram;

Fig. 7 is that the embodiment of the present invention provides a kind of base station schematic diagram;

Fig. 8 is that the embodiment of the present invention provides another kind of communication system schematic diagram;

Fig. 9 is that the embodiment of the present invention provides another kind of base station schematic diagram.

Embodiment

The embodiment of the present invention provides a kind of heterogeneous network switching control method and relevant device and communication system, be conducive to reduce the power consumption of UE different-frequency measure, guarantee the accuracy of UE to the physical control channel mobility measurements of neighbor cell, and measure the promptness that reports triggering.

Below be elaborated respectively.

At first the embodiment of the present invention provides a kind of scheme of new physics channel design, referring to Fig. 2-a, in the embodiment of the present invention, the base station carrier design is divided into and can comprises: two classes such as first kind carrier wave and Equations of The Second Kind carrier wave

In actual applications, a base station (as base station A) can comprise a plurality of first kind carrier waves and a plurality of Equations of The Second Kind carrier wave, the corresponding Zhe Yige of a first kind carrier wave community.One or more first kind carrier waves of base station A can be adjacent with base station A/and one or more Equations of The Second Kind carrier waves of covering another overlapping base station (as base station B) are each other with carrier wave frequently, and/or one or more Equations of The Second Kind carrier waves of base station A can be with one or more first kind carrier waves of base station B each other with carrier wave frequently.Adjacent/as to cover in the first kind carrier wave of overlapping base station and Equations of The Second Kind carrier wave at least one pair of with carrier wave frequently.Wherein, refer to the frequency carrier wave carrier wave that centre frequency is identical.

First kind carrier wave can comprise all or part element of physical control channel, for example can comprise physical mixed feedback retransmission indicating chanel (PHICH, Physical hybrid-ARQ indicator channel), Physical Control Format Indicator Channel (PCFICH, Physical control format indicator channel), PDCCH and CRS etc., and, as the elements such as CRS and PDCCH can be distributed in the whole physical control channel frequency range of first kind carrier wave, Resource Block (the RB of physical control channel on first kind carrier wave, the putting position of the CRS Resource Block) and PDCCH signaling can be as shown in the PCC in Fig. 2-b, base station had both sent CRS at the physical control channel of first kind carrier wave and had also sent the PDCCH signaling, also can send PHICH signaling and PCFICH signaling etc. at the physical control channel of first kind carrier wave.

The Equations of The Second Kind carrier wave can be designed to comprise physical control channel, physical control channel carrying CRS (for example can only carry CRS) on the Equations of The Second Kind carrier wave, but do not carry as the PDCCH signaling etc.In actual applications, the Equations of The Second Kind carrier wave can be designed to two types, a kind of is that on the Equations of The Second Kind carrier wave, physical control channel only has centre frequency 1.25MHz upper by normal power transmission CRS, other position does not launch CRS or the CRS transmitting power is 0, another kind of be that the frequency range of whole physical control channel on the Equations of The Second Kind carrier wave all sends CRS by normal power, the CRS putting position on the Equations of The Second Kind carrier wave on physical control channel Resource Block can be as shown in the SCC1/SCC2 in Fig. 2-b.Base station can send CRS by a physical control channel at the Equations of The Second Kind carrier wave.

It should be noted that, the transverse axis in Fig. 2-b means the OFDM symbol, and the longitudinal axis means carrier frequency/frequency.Wherein, the OFDM symbol of physical control channel can be 1-3, when the symbol of physical control channel is less than 3, after removing 1 row or 2 row of the rightmost OFDM symbol indication in Fig. 2-b, obtains the Resource Block schematic diagram of corresponding PCC and SCC.

The embodiment of the present invention heterogeneous network switch method mainly physical channel design scheme based on as shown in Fig. 2-a is realized.Cover overlapping/adjacent base station according to the physical control channel as shown in Fig. 2-a, send CRS and PDCCH signaling etc. on the physical control channel of first kind carrier wave, send CRS etc. on the physical control channel of Equations of The Second Kind carrier wave.For example, referring to Fig. 2-c, Fig. 2-d, base station A and base station B are for covering overlapping/adjacent base station, and base station A comprises first kind carrier wave a1 and Equations of The Second Kind carrier wave a2, and base station B comprises first kind carrier wave b1 and Equations of The Second Kind carrier wave b2.

Wherein, first kind carrier wave a1 and Equations of The Second Kind carrier wave b2 are each other with the frequency carrier wave, and Equations of The Second Kind carrier wave a2 and first kind carrier wave b1 are each other with the frequency carrier wave.Base station A sends PDCCH signaling and CRS etc. on the physical control channel of first kind carrier wave a1, can only on the physical control channel of Equations of The Second Kind carrier wave a2, send CRS; Base station B sends PDCCH signaling and CRS etc. on the physical control channel of first kind carrier wave b1 (the same frequency carrier wave of Equations of The Second Kind carrier wave a2), can only on the physical control channel of Equations of The Second Kind carrier wave b2 (the same frequency carrier wave of first kind carrier wave a1), send CRS.

For example UE is current resides under the A of base station, if UE measures the signal strength signal intensity of community physical control channel by measuring CRS, can pass through the common frequency measurement mode, measure the signal strength signal intensity of the upper physical control channel of first kind carrier wave a1 and Equations of The Second Kind carrier wave b2, or measure the signal strength signal intensity of Equations of The Second Kind carrier wave a2 and the upper physical control channel of first kind carrier wave b1.

Practice is found, because all mobility measurements all carry out for CRS, therefore retain the CRS of the control domain (being physical control channel) of Equations of The Second Kind carrier wave, can guarantee the accuracy that UE measures physical control channel, and can't cause serious interference to the transmission of the PDCCH signaling of adjacent area (with carrier wave frequently) etc., if only retain the CRS of the middle 1.25MHz of Equations of The Second Kind carrier wave with the mobility measurements for UE, can when further reducing adjacent area PDCCH interference, not affect the accuracy of UE mobility measurements.Physical Cell Identifier (the PCI of the Ke You community, position in CRS to Resource Block of base station scheduling, Physical Cell Identity) determine (for example in Fig. 2-b, the CRS position of SCC1 and SCC2 is not identical), and UE will be from the 0th, the synchronizing channel of 5 subframes reads PCI, although synchronizing channel is arranged in the fixed position of physical data channel, but cover because synchronizing channel also requires the whole network, need to avoid the interference of cell synchronous interchannel.In the embodiment of the present invention, (make the 0th of neighbor cell, 5 subframes are not overlapping) can be realized by the system subframe numbers that diverges to neighbor cell in the base station of neighbor cell, and avoids strongly disturbing generation by corresponding coordinated scheduling.

And for UE, the large scale decline that a plurality of carrier waves in a frequency band (band) experience has very strong similitude, can decline by the large scale of a carrier wave to a certain extent to assess the large scale decline of another carrier wave, therefore, physical channel design scheme based on the embodiment of the present invention, in the covering shown in for example Fig. 2-c and Fig. 2-d under overlapping/adjacent base station, if UE is the current base station A that resides in, the mobility measurements result of UE to the upper physical control channel of Equations of The Second Kind carrier wave b2 of base station B, the mobility measurements result that represents the upper physical control channel of its carrier wave of first kind to base station B b1 that can be similar to, this just provides the foundation for the switching of the alien frequencies based on common frequency measurement.

Facts have proved, a rational handover mechanism need to be avoided following two kinds of situations usually:

(1) table tennis (Pingpong) effect (i.e. switching back and forth frequently between cell-of-origin and Target cell);

(2) too high handover failure rate.

In the embodiment of the present invention, reasonably handover trigger can be undertaken by avoiding following situation: handover trigger causes Pingpong and Radio Link Failure (RLF, Radio Link Failure) frequently too early; Cross late handover trigger and cause RLF; Unreasonable handover trigger causes frequent handover operation.

LTE Rel-8/9 towards the homogeneous network system in, the alignment processing rule of mobility measurements reported event and switching RRM algorithm is as shown in Fig. 2-e.Before A2 (the Serving cell quality is better than threshold value) reporting events triggers switching, base station may receive A3 (the neighbor cell quality is better than Serving cell and surpasses threshold value) event, A4 (the neighbor cell quality the is better than threshold value) event from UE, the reporting events of the common frequency measurement of A5 (the Serving cell quality is worse than threshold value 1 and the neighbor cell quality is better than threshold value 2) event etc.And, under the homogeneous network scene, this means that UE need to carry out with switching frequently.Yet, under the heterogeneous network scene, for guaranteeing that the control channel frequency orthogonal adopts as Fig. 1-b or, after adopting the carrier wave physical control channel design in the embodiment of the present invention, UE can not carry out with switching frequently between neighbor cell.Therefore, if can not carry out the switching of alien frequencies based on common frequency measurement (or, statistics shows that the alien frequencies switching based on common frequency measurement can cause serious ping-pong or too high handover failure rate), to report and can trigger equally base station be the operation of UE configuration different-frequency measure and parameter to the common frequency measurement of A3/A4/A5 event so, certainly, the parameter configuration of different-frequency measure need to complete with reference to the performance of handoffs of the corresponding alien-frequency district (carrier wave) in the heterogeneous network destination node.

Below by specific embodiment, to embodiment of the present invention signalling case, and the alien frequencies handover scheme based on common frequency measurement is elaborated, wherein, the first kind carrier wave and the Equations of The Second Kind carrier wave that cover overlapping/adjacent base station adopt for example scheme of physical channel design shown in Fig. 2-a.

Embodiment mono-

An embodiment of embodiment of the present invention physical control channel signaling method, can comprise: the first base station sends PDCCH signaling, PCFICH signaling, PHICH signaling and frequency pilot sign CRS at the physical control channel of first kind carrier wave, at the physical control channel transmission CRS of Equations of The Second Kind carrier wave; Adjacent with the first base station/as to cover the second overlapping base station to send PDCCH signaling, PCFICH signaling, PHICH signaling and CRS at the physical control channel of first kind carrier wave, at the physical control channel transmission CRS of Equations of The Second Kind carrier wave; Wherein, in the first kind carrier wave of the first base station in the Equations of The Second Kind carrier wave of at least one carrier wave and the second base station at least one carrier wave each other with carrier wave frequently; And/or, in the Equations of The Second Kind carrier wave of the first base station in the first kind carrier wave of at least one carrier wave and the second base station at least one carrier wave each other with carrier wave frequently.

Referring to Fig. 3, specifically can comprise:

310, the first base station sends PDCCH signaling, PCFICH signaling, PHICH signaling and frequency pilot sign CRS at the physical control channel of first kind carrier wave, at the physical control channel transmission CRS of Equations of The Second Kind carrier wave;

Under a kind of application scenarios, the first base station can be at the physical control channel pilot symbol transmitted CRS of its one or more first kind carrier waves, and in PDCCH signaling, PCFICH signaling and PHICH signaling one or more etc., can also send CRS (for example can only send CRS) at the physical control channel of its one or more Equations of The Second Kind carrier waves.

320, adjacent with the first base station/cover the second overlapping base station to send PDCCH signaling, PCFICH signaling, PHICH signaling and CRS at the physical control channel of first kind carrier wave, send CRS at the physical control channel of Equations of The Second Kind carrier wave.

Under a kind of application scenarios, the second base station can be at the physical control channel pilot symbol transmitted CRS of its one or more first kind carrier waves, and in PDCCH signaling, PCFICH signaling and PHICH signaling one or more etc., can also send CRS (for example can only send CRS) at the physical control channel of its one or more Equations of The Second Kind carrier waves.

In actual applications, the first base station (or second base station) can send pilot tone CRS in the whole frequency range of the physical control channel of Equations of The Second Kind carrier wave; Or, send pilot tone CRS at the centre frequency 1.25MHz of the physical control channel of Equations of The Second Kind carrier wave.

Further, if now the serving BS of UE is the first base station, UE carries out common frequency measurement on the first kind carrier wave of the first base station, can obtain the signal strength signal intensity of the physical control channel of the second base station on this frequency, and can for example, when meeting reported event condition (A2/A3/A4/A5), to the first base station reporting measurement reports, if the carrier wave of the second base station on this frequency is the Equations of The Second Kind carrier wave, can trigger the flow process of carrying out the alien frequencies switching based on common frequency measurement.

As seen from the above, adjacent in the present embodiment/as to cover the Combination Design that overlapping base station all adopts first kind carrier wave and Equations of The Second Kind carrier wave, and adjacent/as to cover in the first kind carrier wave of overlapping base station and Equations of The Second Kind carrier wave at least one pair of with frequently, adjacent/as to cover overlapping base station to send the PDCCH signaling at the physical control channel of first kind carrier wave, the PCFICH signaling, PHICH signaling and CRS, and send CRS at the Equations of The Second Kind carrier wave, therefore can guarantee that UE is when common frequency measurement, to adjacent/cover the accuracy of the community physical control channel mobility measurements result of overlapping base station, and measurement reports the promptness of triggering, and can guarantee preferably user's service continuity, and avoid the meaningless up/down row data channel of neighboring interval to disturb.

Embodiment bis-

Physical control channel signal transmitter system based in embodiment mono-, an embodiment of embodiment of the present invention heterogeneous network switching control method, can comprise: the first base station receives the measurement report of reported by user equipment UE, this measurement report carries UE to the first base station and the common frequency measurement information that is adjacent/covers the second overlapping base station, wherein, the first kind carrier wave that the carrier wave on measurement frequency corresponding to this common frequency measurement information is the first base station and the Equations of The Second Kind carrier wave of the second base station; Or, the Equations of The Second Kind carrier wave that the carrier wave on measurement frequency corresponding to this common frequency measurement information is the first base station and the first kind carrier wave of the second base station; Wherein, the physical control channel of first kind carrier wave carrying PDCCH signaling, PCFICH signaling, PHICH signaling and CRS; The physical control channel carrying CRS of Equations of The Second Kind carrier wave; Carry out the alien frequencies switch decision according to above-mentioned common frequency measurement information; If the result of alien frequencies switch decision, for meeting the condition of carrying out the alien frequencies switching based on common frequency measurement, sends handover request message to the second base station, this handover request message is carried the indication information that common frequency measurement triggers the alien frequencies switching.

Referring to Fig. 4, specifically can comprise:

410, the first base station receives the measurement report of reported by user equipment UE, and this measurement report carries UE to the first base station and the common frequency measurement information that is adjacent/covers the second overlapping base station;

Wherein, the first kind carrier wave that the carrier wave on measurement frequency corresponding to this common frequency measurement information is the first base station and the Equations of The Second Kind carrier wave of the second base station; Or, the Equations of The Second Kind carrier wave that the carrier wave on measurement frequency corresponding to this common frequency measurement information is the first base station and the first kind carrier wave of the second base station; Wherein, the physical control channel of first kind carrier wave carrying PDCCH signaling, PCFICH signaling, PHICH signaling and CRS; The physical control channel carrying CRS of Equations of The Second Kind carrier wave.

Under a kind of application scenarios, the first base station and the second base station can be at the physical control channel pilot symbol transmitted CRS of its one or more first kind carrier waves, and in PDCCH signaling, PCFICH signaling and PHICH signaling one or more etc., can also send CRS at the physical control channel of its one or more Equations of The Second Kind carrier waves and (for example, can be only in the whole frequency range of the physical control channel of Equations of The Second Kind carrier wave, send CRS; Or, send CRS at the centre frequency 1.25MHz of the physical control channel of Equations of The Second Kind carrier wave.The UE resided under the first base station can adopt the common frequency measurement mode, measure in the first base station and the second base station with two carrier waves (certain first kind carrier wave of the first base station and certain Equations of The Second Kind carrier wave of the second base station frequently, perhaps, certain Equations of The Second Kind carrier wave of the first base station and certain first kind carrier wave of the second base station) on the signal strength signal intensity of physical control channel, and can for example, when meeting reporting events condition (A2/A3/A4/A5 event), to the first base station reporting measurement reports, trigger the flow process of carrying out the alien frequencies switching based on common frequency measurement.

420, the alien frequencies switch decision is carried out according to above-mentioned common frequency measurement information in the first base station;

Under a kind of application scenarios, the first base station can, according to the common frequency measurement information in measurement report, estimate that with reference to common frequency measurement the error deviation value of alien frequencies channel conditions is carried out the alien frequencies switch decision.Wherein, the decision rule of alien frequencies switching can pre-establish.

For instance, the first base station can be that the neighbor cell quality is better than Serving cell over setting threshold at the reported event of determining the UE common frequency measurement, and the error that common frequency measurement is estimated the alien frequencies channel conditions is in the scope of error deviation value the time, and the switching of judgement alien frequencies meets the condition of carrying out the alien frequencies switching based on common frequency measurement; Otherwise, can adjudicate the alien frequencies switching and not meet the condition of carrying out the alien frequencies switching based on common frequency measurement.

Or, the first base station can be also that the Serving cell quality is worse than threshold value 1 and the neighbor cell quality is better than threshold value 2 at the reported event of determining the UE common frequency measurement, and the error that common frequency measurement is estimated the alien frequencies channel conditions is in the scope of error deviation value the time, and the switching of judgement alien frequencies meets the condition of carrying out the alien frequencies switching based on common frequency measurement; Otherwise can adjudicate the alien frequencies switching and not meet the condition of carrying out the alien frequencies switching based on common frequency measurement.

Or the first base station can be also that the neighbor cell quality is better than setting threshold at the reported event of determining the UE common frequency measurement; And the error that common frequency measurement is estimated the alien frequencies channel conditions is in the scope of error deviation value the time, and the switching of judgement alien frequencies meets the condition of carrying out the alien frequencies switching based on common frequency measurement; Otherwise can adjudicate the alien frequencies switching and not meet the condition of carrying out the alien frequencies switching based on common frequency measurement.

If the alien frequencies handoff decision result of 430 first base stations is for meeting the condition of carrying out the alien frequencies switching based on common frequency measurement, the first base station sends handover request message to the second base station, and this handover request message is carried the indication information that common frequency measurement triggers the alien frequencies switching.

The second base station can receive the handover request that the first base station sends, the indication information that triggers the alien frequencies switching according to common frequency measurement knows that this switching is based on the alien frequencies switching of common frequency measurement, the alien frequencies switching is carried out in the second base station, for UE prepares switchable resource, UE and then can be accessed by target BS, realize carrying out the alien frequencies switching based on common frequency measurement.

In addition, if the result of the alien frequencies switch decision of the first base station is not meet the condition of carrying out the alien frequencies switching based on common frequency measurement, can be UE and carry out the different-frequency measure configuration, and then can trigger and carry out traditional flow process of based on different-frequency measure, carrying out the alien frequencies switching.

Further, the first base station can estimate that the error deviation value of alien frequencies channel conditions carries out suitable adjustment to common frequency measurement, so that its reasonably optimizing more.

Under a kind of application scenarios, measurement the reporting measurement result that UE carries out a plurality of frequencies can be controlled in the first base station; The measurement result reported according to UE, definite or adjustment common frequency measurement is estimated the error deviation value of alien frequencies channel conditions.And/or after the alien frequencies handoff failure based on common frequency measurement, the network side statistics is carried out the performance parameter of alien frequencies handoff failure based on common frequency measurement, and adjusts according to this performance parameter the error deviation value that common frequency measurement is estimated the alien frequencies channel conditions; Wherein, performance parameter can comprise: probability of the Radio Link Failure that too early switching causes or the probability of ping-pong, the probability of crossing the Radio Link Failure that switching causes in evening, frequent handover operation that unreasonable switching causes etc.

As seen from the above, adjacent in the present embodiment/as to cover the Combination Design that overlapping base station all adopts first kind carrier wave and Equations of The Second Kind carrier wave, and adjacent/as to cover in the first kind carrier wave of overlapping base station and Equations of The Second Kind carrier wave at least one pair of with frequently, adjacent/as to cover overlapping base station to send the PDCCH signaling at the physical control channel of first kind carrier wave, the PCFICH signaling, PHICH signaling and CRS, and send CRS at the Equations of The Second Kind carrier wave, therefore can guarantee that UE is when common frequency measurement, to adjacent/cover the accuracy of the community physical control channel mobility measurements result of overlapping base station, and measurement reports the promptness of triggering, and can guarantee preferably user's service continuity, and avoid the meaningless up/down row data channel of neighboring interval to disturb, owing to introducing the mechanism of carrying out the alien frequencies switching based on common frequency measurement, can avoid the consumption to UE power of meaningless different-frequency measure.

Embodiment tri-

For ease of better understanding, a kind of process that the UE of below take carries out the heterogeneous network switching is example, and the scheme of the embodiment of the present invention is made a more detailed description.Referring to Fig. 5, another embodiment to embodiment of the present invention heterogeneous network switching control method can comprise:

501, eNB-A measures control to UE;

Wherein, eNB-A (source eNB) can indicate UE periodically or acyclic measurement adjacent/cover the signal strength signal intensity of overlapping base station, the measurement neighboring area signal intensity that UE also can be initiatively.

Under a kind of application scenarios, eNB can add up the correlated performance parameter of carrying out the alien frequencies switching based on common frequency measurement.But the statistical computation result of the performance parameter of the alien frequencies switching of eNB-A grid of reference based on common frequency measurement, for UE configures the trigger parameter (comprise the relevant limit of configuration threshold value, trigger amount of hysteresis etc.) that rational measurement event reports.

In actual applications, during trigger parameter in eNB allocating and measuring reported event A3/A4/A5, need trigger with reference to the result of common frequency measurement the measured deviation of alien frequencies switching.

502, UE, to the eNB-A reporting measurement reports, wherein carries common frequency measurement information;

In the present embodiment, the measurement report that UE reports carries UE to eNB-A and the common frequency measurement information that is adjacent/covers overlapping eNB-B, comprises the signal strength information of mobility measurements etc.;

Wherein, the first kind carrier wave that the carrier wave on measurement frequency corresponding to this common frequency measurement information is eNB-A and the Equations of The Second Kind carrier wave of eNB-B; Or, the Equations of The Second Kind carrier wave that the carrier wave on measurement frequency corresponding to this common frequency measurement information is eNB-A and the first kind carrier wave of eNB-B; Wherein, the physical control channel of first kind carrier wave carrying PDCCH signaling, PCFICH signaling, PHICH signaling and CRS; The physical control channel carrying CRS of Equations of The Second Kind carrier wave.

Under a kind of application scenarios, eNB-A and eNB-B can be at the physical control channel pilot symbol transmitted CRS of its one or more first kind carrier waves, and in PDCCH signaling, PCFICH signaling and PHICH signaling one or more etc., can also on the physical control channel of its one or more Equations of The Second Kind carrier waves, send CRS (as can be only in the whole frequency range of the physical control channel of Equations of The Second Kind carrier wave, sent CRS; Or, send CRS at the centre frequency 1.25MHz of the physical control channel of Equations of The Second Kind carrier wave).The UE resided under eNB-A can adopt the common frequency measurement mode, measure the signal strength signal intensity of the physical control channel on same two carrier waves frequently in eNB-A and eNB-B, and for example, when meeting reporting events condition (A2/A3/A4/A5 event), to the eNB-A reporting measurement reports, to trigger the flow process of carrying out the alien frequencies switching based on common frequency measurement.

503, eNB-A receives the measurement report that UE reports, and according to the common frequency measurement information in this measurement report, carries out the alien frequencies switch decision.

Under a kind of application scenarios, the common frequency measurement result that eNB-A can report according to the A3/A4/A5 Event triggered of UE common frequency measurement, estimate that with reference to common frequency measurement the error deviation value etc. of alien frequencies channel conditions is carried out the alien frequencies switch decision.Wherein, common frequency measurement is estimated a plurality of different-frequency measure results that the error deviation value of alien frequencies channel conditions can be preset or be reported according to UE by eNB-A, determines or adjusts the error deviation value that common frequency measurement is estimated the alien frequencies channel conditions; And/or, after the alien frequencies handoff failure based on common frequency measurement, carry out the performance parameter of alien frequencies handoff failure by network statistics based on common frequency measurement, and can adjust the error deviation value that common frequency measurement is estimated the alien frequencies channel conditions according to this performance parameter; Wherein, performance parameter can comprise: failed switching be from which cell-of-origin to which Target cell (available switching is identified), the probability of the probability of Radio Link Failure that too early switching causes or ping-pong, the probability of crossing the Radio Link Failure that switching causes in evening, frequent handover operation that unreasonable switching causes etc.

If meet the switching requirement that common frequency measurement is carried out the alien frequencies switching, perform step 504; If do not meet, can be UE and distribute Measurement Gap, the different-frequency measure of operative norm triggers the flow process of alien frequencies switching, the A3/A4/A5 reporting events of UE common frequency measurement now, trigger source eNB is UE configuration different-frequency measure operation and parameter, certainly, the parameter configuration of different-frequency measure need to complete with reference to the performance of handoffs of the corresponding alien-frequency district in the heterogeneous network destination node, and the flow process of the different-frequency measure of standard triggering alien frequencies switching repeats no more herein.

504, eNB-A sends handover request message to eNB-B;

In actual applications, eNB-A can carry the indication information that common frequency measurement triggers the alien frequencies switching in handover request message, and this switches to the alien frequencies switching that common frequency measurement triggers notice eNB-B (target eNB).

505, eNB-B receives the handover request message that eNB-A sends, and UE is carried out to access control;

Wherein, eNB-B can trigger according to the common frequency measurement in handover request message the indication of alien frequencies switching, know that this switching is based on the alien frequencies switching of common frequency measurement, according to the alien frequencies switch mode, UE is carried out to access control, if allow the UE access,, for UE prepares corresponding switchable resource, perform step 506, if do not allow UE access, but process ends.

Further, network (eNB) can trigger on the basis of the performance statistics switched with the alien frequencies of switching/different-frequency measure triggering frequently at common frequency measurement, increase the performance statistics that common frequency measurement triggers the alien frequencies switching, after occurring that handoff failure initiation network reconnects, the information that network can report according to UE is determined:

(1) whether the failure of this switching is the alien frequencies handoff failure belonged to based on common frequency measurement;

(2) switching of this failure is from which cell-of-origin to which Target cell;

(3) failure of this switching is to belong to too early handover trigger, crosses the handoff failure that late handover trigger or unreasonable handover trigger cause.

ENB can be according to the statistics of respective performances parameter, estimate that with the measurement event trigger parameter, the common frequency measurement that common frequency measurement are triggered under the alien frequencies handoff scenario alien frequencies switching control parameters such as error deviation value of alien frequencies channel conditions carry out the adjustment of suitability, constantly to make up common frequency measurement, replace different-frequency measure to trigger the error that the alien frequencies switching is caused, the Pingpong effect of avoiding as far as possible the switching of common frequency measurement triggering alien frequencies to cause and too high handover failure rate.

For example, eNB adds up discovery before this, when common frequency measurement estimates that the error deviation value of alien frequencies channel conditions is set to S1, the success rate of the alien frequencies switching based on common frequency measurement is less than 95%, the error deviation value of estimating the alien frequencies channel conditions when common frequency measurement is set to S2 (S2<S1), alien frequencies handover success rate based on common frequency measurement is greater than 98%, and eNB estimates that by common frequency measurement the error deviation value of alien frequencies channel conditions is adjusted into S2, by that analogy.

506, eNB-B sends switching request acknowledgement message to eNB-A, and wherein carrying eNB-B is that UE prepares switchable resource information.

507, eNB-A receives the switching request acknowledgement message that eNB-B sends, and knows that eNB-B allows the UE access, to UE, sends switching command, indication UE access eNB-B, and carrying eNB-B in switching command is that UE prepares switchable resource information.

Now, if eNB-A receives the downlink data of UE, eNB-A can be to the downlink data of eNB-B forward pass UE.The downlink data of the UE turned over before eNB-B buffer memory eNB-A.

508, the UE uplink synchronous, to Target cell, sends random access request to eNB-B, wherein carries leading Preamble.

509, eNB-B is that UE distributes ascending wireless resource, and send accidental access response to UE, wherein carrying eNB-B is the ascending wireless resource information (indication uplink time/frequency source) of UE distribution and the information such as Timing Advance (TA, Time AdCanced) that UE sends upstream data.

510, UE sends switch acknowledgment message to eNB-B;

511, eNB-B is to MME transmit path conversion request, and request is changed the data transfer path of UE;

512, MME sends user's face update request to service webmaster (SGW, Servering Getway);

513, the transmission path of the downlink data of SGW conversion UE;

514, SGW sends user's face renewal response to MME;

515, MME is to eNB-B transmit path transition response, and eNB-B can know that the transmission path of the downlink data of UE converts accordingly;

516, eNB-B indication eNB-A discharges respective resources.

ENB-A discharges the respective resources of UE, empties the downlink data buffer memory of corresponding UE, and continues the UE downlink data transmitted to the eNB-B forward.

Follow-up UE just can be directly by eNB-B and network interaction packet.

Can find out, adjacent in the present embodiment/as to cover the Combination Design that overlapping eNB (eNB-A and eNB-B) all adopts first kind carrier wave and Equations of The Second Kind carrier wave, and adjacent/cover in the first kind carrier wave of overlapping eNB and Equations of The Second Kind carrier wave have at least a pair of with frequently, adjacent/as to cover overlapping eNB to send the PDCCH signaling at the physical control channel of first kind carrier wave, the PCFICH signaling, PHICH signaling and CRS, and send CRS at the Equations of The Second Kind carrier wave, therefore can guarantee that UE is when common frequency measurement, to adjacent/cover the accuracy of the community physical control channel mobility measurements result of overlapping base station, and measurement reports the promptness of triggering, and can guarantee preferably user's service continuity, and avoid the meaningless up/down row data channel of neighboring interval to disturb, owing to introducing the mechanism of carrying out the alien frequencies switching based on common frequency measurement, can avoid the consumption to UE power of meaningless different-frequency measure.

Further, above-mentioned handover scheme possesses good backwards compatibility, as the UE of LTE Rel-8/Rel-9 version also can switch smoothly and work without any need for changing under the heterogeneous network scene.

Further, for ease of better implementing the said method of the embodiment of the present invention, the embodiment of the present invention also provides corresponding dress.

Also provide a kind of communication system referring to Fig. 6, the embodiment of the present invention, comprising: the first base station 610, and adjacent with the first base station 610/as to cover the second overlapping base station 620.

Wherein, the first base station 610, send PDCCH signaling, PCFICH signaling, PHICH signaling and CRS for the physical control channel at first kind carrier wave, at the physical control channel transmission CRS of Equations of The Second Kind carrier wave;

The second base station 620, send PDCCH signaling, PCFICH signaling, PHICH signaling and CRS for the physical control channel at first kind carrier wave, at the physical control channel transmission CRS of Equations of The Second Kind carrier wave;

Wherein, in the first kind carrier wave of the first base station 610 in the Equations of The Second Kind carrier wave of at least one carrier wave and the second base station 620 at least one carrier wave each other with carrier wave frequently; And/or, in the Equations of The Second Kind carrier wave of the first base station 610 in the first kind carrier wave of at least one carrier wave and the second base station 620 at least one carrier wave each other with carrier wave frequently.

Under a kind of application scenarios, the first base station 610 (or second base station 620) can send CRS in the whole frequency range of the physical control channel of Equations of The Second Kind carrier wave; Or, send CRS at the centre frequency 1.25MHz of the physical control channel of Equations of The Second Kind carrier wave.

Further, if now the serving BS of UE is the first base station 610, UE carries out common frequency measurement on the first kind carrier wave of the first base station 610, can obtain the signal strength signal intensity of the second physical control channel of base station 620 on this frequency, and can for example, when meeting reported event condition (A2/A3/A4/A5), to the first base station 610 reporting measurement reports, if the second carrier wave of base station 620 on this frequency is the Equations of The Second Kind carrier wave, can trigger the flow process of carrying out the alien frequencies switching based on common frequency measurement.

Be appreciated that, the present embodiment the first base station 610 can be as the eNB-A in above-mentioned embodiment of the method, and the second base station 620 can, as the eNB-B in above-mentioned embodiment of the method, can be used for realizing its whole schemes, its specific implementation process, with reference to the associated description in said method embodiment, repeats no more herein.

As seen from the above, adjacent in the present embodiment/as to cover the Combination Design that overlapping base station (the first base station 610 and the first base station 620) all adopts first kind carrier wave and Equations of The Second Kind carrier wave, and adjacent/as to cover in the first kind carrier wave of overlapping base station and Equations of The Second Kind carrier wave at least one pair of with frequently, adjacent/as to cover overlapping base station to send the PDCCH signaling at the physical control channel of first kind carrier wave, the PCFICH signaling, PHICH signaling and CRS, and send CRS at the Equations of The Second Kind carrier wave, therefore can guarantee that UE is when common frequency measurement, to adjacent/cover the accuracy of the community physical control channel mobility measurements result of overlapping base station, and measurement reports the promptness of triggering, and can guarantee preferably user's service continuity, and avoid the meaningless up/down row data channel of neighboring interval to disturb.

Also provide a kind of base station 700 referring to Fig. 7, the embodiment of the present invention, comprising: receiver module 710, judging module 720 and sending module 730.

Wherein, receiver module 710, for receiving the measurement report that UE reports, this measurement report carries UE to described base station and the common frequency measurement information that is adjacent/covers the second overlapping base station, wherein, the first kind carrier wave that the carrier wave on measurement frequency corresponding to this common frequency measurement information is base station 700 and the Equations of The Second Kind carrier wave of the second base station; Or, the Equations of The Second Kind carrier wave that the carrier wave on measurement frequency corresponding to this common frequency measurement information is described base station 700 and the first kind carrier wave of the second base station;

Wherein, the physical control channel of first kind carrier wave carrying PDCCH signaling, PCFICH signaling, PHICH signaling and CRS; The physical control channel carrying CRS of Equations of The Second Kind carrier wave;

Judging module 720, for carrying out the alien frequencies switch decision according to above-mentioned common frequency measurement information;

Sending module 730, while for meeting in judging module 720 judgement alien frequencies switchings, based on common frequency measurement, carrying out the condition of alien frequencies switching, send handover request message to the second base station, and this handover request message is carried the indication information that common frequency measurement triggers the alien frequencies switching.

The second base station can receive the handover request that the first base station sends, alien frequencies switching based on common frequency measurement while according to the indication information of common frequency measurement triggering alien frequencies switching, knowing this switching, the alien frequencies switching is carried out in the second base station, for UE prepares switchable resource, UE and then can be accessed by target BS, realize carrying out the alien frequencies switching based on common frequency measurement.

Under a kind of application scenarios, judging module 720 specifically for, according to described common frequency measurement information, estimate that with reference to common frequency measurement the error deviation value of alien frequencies channel conditions is carried out the alien frequencies switch decision.

Wherein, judging module 720 can comprise:

The first judgement submodule, for the reported event determining the UE common frequency measurement, be that the neighbor cell quality is better than Serving cell over setting threshold, and the error that common frequency measurement is estimated the alien frequencies channel conditions is in the scope of error deviation value the time, and the switching of judgement alien frequencies meets the condition of carrying out the alien frequencies switching based on common frequency measurement; Or,

The second judgement submodule, for the reported event determining the UE common frequency measurement, be that the Serving cell quality is worse than threshold value 1 and the neighbor cell quality is better than threshold value 2, and the error that common frequency measurement is estimated the alien frequencies channel conditions is in the scope of error deviation value the time, and the switching of judgement alien frequencies meets the condition of carrying out the alien frequencies switching based on common frequency measurement; Or,

The 3rd judgement submodule, for the reported event determining the UE common frequency measurement, be that the neighbor cell quality is better than setting threshold, and the error that common frequency measurement is estimated the alien frequencies channel conditions is within the scope of error deviation value the time, and the switching of judgement alien frequencies meets the condition of carrying out the alien frequencies switching based on common frequency measurement.

Under a kind of application scenarios, base station 700 can also comprise:

Trigger module, while carrying out the condition of alien frequencies switching for not meeting in judging module 720 judgement alien frequencies switchings based on common frequency measurement, for this UE carries out the different-frequency measure configuration.And then can trigger and carry out traditional flow process of based on different-frequency measure, carrying out the alien frequencies switching.

Under a kind of application scenarios, base station 700 also can comprise:

Control module, carry out a plurality of different-frequency measures reporting measurement result for controlling UE;

The first adjusting module, for the measurement result reported according to UE, determine or adjust the error deviation value of common frequency measurement estimation alien frequencies channel conditions.

Under a kind of application scenarios, base station 700 also can comprise:

The second adjusting module, after the alien frequencies handoff failure based on common frequency measurement, carry out the performance parameter of alien frequencies handoff failure, and adjust with reference to this performance parameter the error deviation value that common frequency measurement is estimated the alien frequencies channel conditions based on common frequency measurement by statistics; Wherein, performance parameter can comprise: the Radio Link Failure that too early switching causes or the probability of ping-pong, cross the probability of the Radio Link Failure that switching causes in evening, the probability of frequent handover operation that unreasonable switching causes.

Be appreciated that the present embodiment base station 700 can be used for realizing its whole schemes as the eNB-A in above-mentioned embodiment of the method, its specific implementation process, with reference to the associated description in said method embodiment, repeats no more herein.

Can find out, adjacent in the present embodiment/as to cover the Combination Design that overlapping base station (base station 700 and the second base station) all adopts first kind carrier wave and Equations of The Second Kind carrier wave, and adjacent/cover in the first kind carrier wave of overlapping eNB and Equations of The Second Kind carrier wave have at least a pair of with frequently, adjacent/as to cover overlapping base station to send the PDCCH signaling at the physical control channel of first kind carrier wave, the PCFICH signaling, PHICH signaling and CRS, and send CRS at the Equations of The Second Kind carrier wave, therefore can guarantee that UE is when common frequency measurement, to adjacent/cover the accuracy of the community physical control channel mobility measurements result of overlapping base station, and measurement reports the promptness of triggering, and can guarantee preferably user's service continuity, and avoid the meaningless up/down row data channel of neighboring interval to disturb, owing to introducing the mechanism of carrying out the alien frequencies switching based on common frequency measurement, can avoid the consumption to UE power of meaningless different-frequency measure.

The embodiment of the present invention also provides a kind of communication system, comprising: base station 810, and adjacent with base station 810/as to cover another overlapping base station 820.

Wherein, base station 810, for receiving the measurement report that UE reports, this measurement report carries the common frequency measurement information of UE to base station 810 and another base station 820, wherein, the first kind carrier wave that the carrier wave on measurement frequency corresponding to this common frequency measurement information is base station 810 and the Equations of The Second Kind carrier wave of another base station 820; Or, the Equations of The Second Kind carrier wave that the carrier wave on measurement frequency corresponding to this common frequency measurement information is base station 810 and the first kind carrier wave of another base station 820; Wherein, the physical control channel of first kind carrier wave carrying PDCCH signaling, PCFICH signaling, PHICH signaling and CRS; The physical control channel carrying CRS of Equations of The Second Kind carrier wave; Carry out the alien frequencies switch decision according to above-mentioned common frequency measurement information; If the result of alien frequencies switch decision, for meeting the condition of carrying out the alien frequencies switching based on common frequency measurement, sends handover request message to another base station 820, this handover request message is carried the indication information that common frequency measurement triggers the alien frequencies switching.

Another base station 820 receives the handover request that base station 810 sends, and can carry out according to the alien frequencies switch mode access control of UE.

In addition, if the result of alien frequencies switch decision is not meet the condition of carrying out the alien frequencies switching based on common frequency measurement, for UE, carry out the different-frequency measure configuration.And then can trigger and carry out traditional flow process of based on different-frequency measure, carrying out the alien frequencies switching.

Be appreciated that, the present embodiment base station 810 can be as the eNB-A in above-mentioned embodiment of the method, and base station 820 can, as the eNB-B in above-mentioned embodiment of the method, can be used for realizing its whole schemes, its specific implementation process, with reference to the associated description in said method embodiment, repeats no more herein.

The embodiment of the present invention also provides a kind of communication system, can comprise: base station 700.

The embodiment of the present invention also provides a kind of base station 900, comprising::

The first sending module 910, send PDCCH signaling, PCFICH signaling, PHICH signaling and CRS for the physical control channel of 900 the first kind carrier wave in base station;

The second sending module 920, send CRS for the physical control channel of 900 the Equations of The Second Kind carrier wave in base station.

It should be noted that, for aforesaid each embodiment of the method, for simple description, therefore it all is expressed as to a series of combination of actions, but those skilled in the art should know, the present invention is not subject to the restriction of described sequence of movement, because according to the present invention, some step can adopt other orders or carry out simultaneously.Secondly, those skilled in the art also should know, the embodiment described in specification all belongs to preferred embodiment, and related action and module might not be that the present invention is necessary.

In the above-described embodiments, the description of each embodiment is all emphasized particularly on different fields, there is no the part described in detail in certain embodiment, can be referring to the associated description of other embodiment.

To sum up, adjacent in the embodiment of the present invention/as to cover the Combination Design that overlapping base station all adopts first kind carrier wave and Equations of The Second Kind carrier wave, and adjacent/cover in the first kind carrier wave of overlapping base station and Equations of The Second Kind carrier wave have at least a pair of with frequently, adjacent/as to cover overlapping base station to send the PDCCH signaling at the physical control channel of first kind carrier wave, the PCFICH signaling, PHICH signaling and CRS, and send CRS at the Equations of The Second Kind carrier wave, therefore can guarantee that UE is when common frequency measurement, to adjacent/cover the accuracy of the community physical control channel mobility measurements result of overlapping base station, and measure the promptness report, and can guarantee preferably user's service continuity, and avoid the meaningless up/down row data channel of neighboring interval to disturb, owing to introducing the mechanism of carrying out the alien frequencies switching based on common frequency measurement, can avoid the consumption to UE power of meaningless different-frequency measure.

Further, above-mentioned alien frequencies handover scheme possesses good backwards compatibility, as the UE of LTE Rel-8/Rel-9 version also can switch smoothly and work without any need for changing under the heterogeneous network scene.

One of ordinary skill in the art will appreciate that all or part of step in the whole bag of tricks of above-described embodiment is to come the hardware that instruction is relevant to complete by program, this program can be stored in a computer-readable recording medium, and storage medium can comprise: read-only memory, random asccess memory, disk or CD etc.

The above heterogeneous network switching control method that the embodiment of the present invention is provided and signaling method and equipment and communication system, be described in detail, applied specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment is just for helping to understand method of the present invention and core concept thereof; , for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, to sum up, this description should not be construed as limitation of the present invention simultaneously.

Claims

1. a physical control channel signaling method, is characterized in that, comprising:

2. method according to claim 1, is characterized in that,

The described physical control channel at the Equations of The Second Kind carrier wave sends CRS, comprising:

Whole frequency range at the physical control channel of Equations of The Second Kind carrier wave sends CRS; Or,

Centre frequency 1.25MHz at the physical control channel of Equations of The Second Kind carrier wave sends CRS.

3. a heterogeneous network switching control method, is characterized in that, comprising:

The first base station receives the measurement report of reported by user equipment UE, described measurement report carries UE to the first base station and the common frequency measurement information that is adjacent/covers the second overlapping base station, wherein, the first kind carrier wave that the carrier wave on measurement frequency corresponding to described common frequency measurement information is the first base station and the Equations of The Second Kind carrier wave of the second base station; Or, the Equations of The Second Kind carrier wave that the carrier wave on measurement frequency corresponding to described common frequency measurement information is the first base station and the first kind carrier wave of the second base station; Wherein, the physical control channel of described first kind carrier wave carrying physical downlink control channel PDCCH signaling, Physical Control Format Indicator Channel PCFICH signaling, physical mixed feedback retransmission indicating chanel PHICH signaling and frequency pilot sign CRS; The physical control channel carrying CRS of described Equations of The Second Kind carrier wave;

4. method according to claim 3, is characterized in that,

Describedly according to described common frequency measurement information, carry out the alien frequencies switch decision, comprising:

According to described common frequency measurement information, estimate that with reference to common frequency measurement the error deviation value of alien frequencies channel conditions is carried out the alien frequencies switch decision.

5. method according to claim 4, is characterized in that,

Carry out the alien frequencies switch decision according to described common frequency measurement information, comprising:

At the reported event of determining described UE common frequency measurement, be that the neighbor cell quality is better than Serving cell over setting threshold, and the error that common frequency measurement is estimated the alien frequencies channel conditions is in the scope of error deviation value the time, and the switching of judgement alien frequencies meets the condition of carrying out the alien frequencies switching based on common frequency measurement; Or,

At the reported event of determining described UE common frequency measurement, be that the Serving cell quality is worse than threshold value 1 and the neighbor cell quality is better than threshold value 2, and the error that common frequency measurement is estimated the alien frequencies channel conditions is in the scope of error deviation value the time, and the switching of judgement alien frequencies meets the condition of carrying out the alien frequencies switching based on common frequency measurement; Or,

At the reported event of determining described UE common frequency measurement, be that the neighbor cell quality is better than setting threshold; And the error that common frequency measurement is estimated the alien frequencies channel conditions is in the scope of error deviation value the time, and the switching of judgement alien frequencies meets the condition of carrying out the alien frequencies switching based on common frequency measurement.

6. according to the described method of claim 3 to 5 any one, it is characterized in that,

If the result of alien frequencies switch decision is not meet the condition of carrying out the alien frequencies switching based on common frequency measurement, for described UE, carry out the different-frequency measure configuration.

7. method according to claim 4, is characterized in that, described method also comprises:

Control UE and carry out a plurality of different-frequency measures reporting measurement result;

The measurement result reported according to described UE, definite or adjustment common frequency measurement is estimated the error deviation value of alien frequencies channel conditions.

8. method according to claim 4, is characterized in that, described method also comprises:

After the alien frequencies handoff failure based on common frequency measurement, statistics is carried out the performance parameter of alien frequencies handoff failure based on common frequency measurement, and adjusts with reference to this performance parameter the error deviation value that common frequency measurement is estimated the alien frequencies channel conditions;

Wherein, described performance parameter comprises:

The Radio Link Failure that too early switching causes or the probability of ping-pong, cross the probability of the Radio Link Failure that switching causes in evening, the probability of frequent handover operation that unreasonable switching causes.

9. a communication system, is characterized in that, comprising:

The first base station, send physical downlink control channel PDCCH signaling, Physical Control Format Indicator Channel PCFICH signaling, physical mixed feedback retransmission indicating chanel PHICH signaling and frequency pilot sign CRS for the physical control channel at first kind carrier wave, at the physical control channel transmission CRS of Equations of The Second Kind carrier wave;

10. a base station, is characterized in that, comprising:

Receiver module, for receiving the measurement report of reported by user equipment UE, described measurement report carries UE to described base station and the common frequency measurement information that is adjacent/covers the second overlapping base station, wherein, the first kind carrier wave that the carrier wave on measurement frequency corresponding to described common frequency measurement information is described base station and the Equations of The Second Kind carrier wave of the second base station; Or, the Equations of The Second Kind carrier wave that the carrier wave on measurement frequency corresponding to described common frequency measurement information is described base station and the first kind carrier wave of the second base station; Wherein, the physical control channel of described first kind carrier wave carrying physical downlink control channel PDCCH signaling, Physical Control Format Indicator Channel PCFICH signaling, physical mixed feedback retransmission indicating chanel PHICH signaling and frequency pilot sign CRS; The physical control channel carrying CRS of described Equations of The Second Kind carrier wave;

11. base station according to claim 10, is characterized in that,

Described judging module specifically for, according to described common frequency measurement information, estimate that with reference to common frequency measurement the error deviation value of alien frequencies channel conditions is carried out the alien frequencies switch decision.

12. base station according to claim 11, is characterized in that,

Described judging module comprises, comprising:

The first judgement submodule, for the reported event determining described UE common frequency measurement, be that the neighbor cell quality is better than Serving cell over setting threshold, and the error that common frequency measurement is estimated the alien frequencies channel conditions is in the scope of error deviation value the time, and the switching of judgement alien frequencies meets the condition of carrying out the alien frequencies switching based on common frequency measurement; Or,

The second judgement submodule, for the reported event determining described UE common frequency measurement, be that the Serving cell quality is worse than threshold value 1 and the neighbor cell quality is better than threshold value 2, and the error that common frequency measurement is estimated the alien frequencies channel conditions is in the scope of error deviation value the time, and the switching of judgement alien frequencies meets the condition of carrying out the alien frequencies switching based on common frequency measurement; Or,

The 3rd judgement submodule is that the neighbor cell quality is better than setting threshold for the reported event determining described UE common frequency measurement; And the error that common frequency measurement is estimated the alien frequencies channel conditions is in the scope of error deviation value the time, and the switching of judgement alien frequencies meets the condition of carrying out the alien frequencies switching based on common frequency measurement.

13. according to claim 10 to the 12 described base stations of any one, it is characterized in that, also comprise:

Trigger module, while carrying out the condition of alien frequencies switching for not meeting in the switching of described judging module judgement alien frequencies based on common frequency measurement, for described UE carries out the different-frequency measure configuration.

14. base station according to claim 11, is characterized in that, also comprises:

The first adjusting module, for the measurement result reported according to described UE, determine or adjust the error deviation value of common frequency measurement estimation alien frequencies channel conditions.

15. base station according to claim 11, is characterized in that, also comprises:

The second adjusting module, after the alien frequencies handoff failure based on common frequency measurement, statistics is carried out the performance parameter of alien frequencies handoff failure based on common frequency measurement, and adjusts with reference to described performance parameter the error deviation value that common frequency measurement is estimated the alien frequencies channel conditions;

Wherein, described performance parameter comprises:

16. a communication system, is characterized in that, comprising:

The described base station of claim 10 to 15 any one.